MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR JANUARY 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 0 26 05 02 96 -6.5 97 1.4 -7.1 -8.9 -0.5 -0.3 1.6 2.8 3.6 6.0 40 0 0.0 3.5 000000 1041.0 0.0 19.5 0.4 02 1 09 05 02 97 -2.4 97 2.8 -6.5 -8.5 -1.2 -0.9 0.9 2.5 3.2 5.7 40 0 0.0 3.0 000000 1034.5 0.0 15.4 0.2 03 4 09 05 02 97 -1.6 90 3.4 -2.4 -4.0 -2.0 -1.5 0.7 2.3 2.9 5.7 40 0 0.0 5.5 000000 1030.5 0.0 14.5 0.1 04 0 13 09 02 97 -4.0 95 4.8 -4.3 -6.0 -2.5 -2.0 0.4 2.2 2.7 5.4 40 0 1.0 2.5 000000 1030.5 1.7 12.9 0.1 05 8 13 05 20 94 4.8 98 9.2 -4.0 -4.5 -0.2 -0.2 0.7 2.3 2.6 5.2 10 0 0.2 0.0 000000 1036.0 0.5 0.0 0.4 06 9 00 00 45 04 6.4 98 7.7 4.8 4.1 0.5 -0.1 1.1 2.5 2.7 5.1 10 0 0.2 0.0 000001 1038.0 0.6 0.0 0.2 07 8 17 02 02 94 5.0 98 5.8 5.0 4.0 3.4 2.7 2.8 3.2 3.2 5.0 10 0 0.3 0.0 000000 1036.0 1.2 0.0 0.1 08 8 15 02 02 94 4.0 92 4.3 3.1 0.7 3.2 2.7 3.3 3.8 3.6 5.1 10 0 0.0 0.0 000000 1034.0 0.0 0.0 0.6 09 3 16 02 01 94 1.0 96 5.5 0.6 -1.5 2.2 2.2 3.1 3.8 3.7 5.2 10 0 2.4 0.0 000000 1035.0 3.2 0.0 0.3 10 8 17 02 41 09 4.7 97 7.0 1.0 -3.2 3.6 3.2 3.9 4.0 3.9 5.4 10 0 1.4 0.2 000001 1031.5 1.3 0.0 0.2 11 8 00 00 44 05 0.6 99 5.3 0.4 -1.1 3.1 2.9 3.8 4.2 4.2 5.4 10 0 tr 0. 0 0 000001 1030.0 0.0 0.0 0.0 12 9 00 00 45 02 3.4 98 8.6 0.1 -1.1 2.8 2.7 3.5 4.0 4.2 5.5 10 0 0.7 0.2 000001 1031.5 1.2 0.0 0.4 13 8 18 02 02 95 8.6 98 11.1 3.4 0.3 5.8 5.2 5.0 4.6 4.3 5.5 10 0 tr 0.0 000000 1024.5 0.0 0.0 0.2 14 8 28 02 50 96 9.0 96 11.0 8.6 4.4 6.2 6.2 6.2 5.4 4.8 5.6 10 0 2.7 0.3 000000 1025.0 3.6 0.0 0.4 15 8 25 02 02 96 7.2 98 9.5 7.2 5.0 6.5 6.9 6.7 6.0 5.6 5.8 10 0 0.0 1.9 000000 1017.0 0.0 0.0 0.3 16 7 27 02 03 97 0.2 96 9.3 -0.6 -4.4 2.4 2.6 3.4 5.6 5.6 6.0 10 0 0.2 0.1 000000 1023.0 0.5 6.2 0.5 17 7 25 05 02 97 9.3 88 9.3 0.2 5.5 6.1 5.6 6.1 5.5 5.4 6.0 10 0 3.0 0.1 000000 1017.0 2.5 0.0 0.3 18 9 00 00 45 04 0.8 99 8.8 -0.1 -3.8 2.7 2.9 4.6 5.6 5.6 6.2 10 0 1.6 0.6 000000 1022.0 2.8 0.2 0.5 19 0 29 05 02 97 6.0 91 11.0 0.8 1.5 4.3 4.3 5.0 5.6 5.4 6.2 10 0 tr 4.7 000000 1012.5 0.0 0.0 0.9 20 8 22 09 02 97 11.0 79 12.1 6.0 -0.9 6.2 5.5 5.4 5.5 5.4 6.2 10 0 4.9 0.0 000000 1013.0 8.6 0.0 0.3 21 8 18 09 02 97 11.5 89 11.5 10.7 7.8 8.8 8.2 7.7 6.5 5.7 6.3 10 0 0.2 0.0 000000 1011.0 0.4 0.0 1.1 22 8 22 09 02 97 8.5 89 10.8 8.2 4.6 6.4 6.8 7.4 7.0 6.3 6.5 10 0 1.9 5.3 000000 1004.0 2.0 0.0 1.5 23 8 21 13 21 97 8.1 91 11.8 7.4 3.8 7.1 6.8 7.0 7.0 6.6 6.6 10 0 5.2 0.5 000000 994.5 8.5 0.0 1.2 24 8 22 09 60 97 9.6 85 10.3 8.1 6.5 7.9 7.7 8.0 7.4 6.7 6.8 10 0 tr 0.4 000000 993.5 0.0 0.0 0.6 25 8 21 09 60 97 4.2 88 11.5 0.9 -3.0 4.4 4.5 5.7 6.9 6.9 7.0 10 0 7.6 0.0 000000 1019.0 6.5 0.0 1.3 26 8 31 13 60 96 11.2 89 11.6 4.2 2.8 7.9 7.3 7.3 7.0 6.6 7.0 10 0 11.9 0.0 000000 1004.5 8.6 0.0 0.6 27 8 23 02 21 97 8.2 93 13.1 7.6 3.9 7.3 7.2 7.6 7.5 7.0 7.0 10 0 7.3 0.0 000000 1005.5 8.5 0.0 0.6 28 4 30 13 02 97 10.4 71 12.5 8.0 7.0 8.9 8.8 9.0 8.0 7.4 7.3 10 0 1.5 6.2 000000 1011.0 0.3 0.0 1.9 29 0 32 09 02 97 8.7 89 14.1 7.9 3.4 6.6 7.2 7.9 8.0 7.5 7.5 10 0 tr 1.5 000000 1020.0 0.0 0.0 1.0 30 8 23 09 02 97 11.5 88 12.5 8.6 4.1 8.9 8.4 8.4 8.0 7.6 7.6 10 0 2.7 0.0 000000 1014.0 1.7 0.0 0.9 31 0 27 02 02 06 5.5 91 11.1 5.0 -0.1 5.9 6.4 7.9 7.3 7.7 7.7 10 0 4.0 1.2 000000 1016.5 2.8 0.0 1.4 Monthly means 5.3 92 9.0 3.0 0.6 4.3 4.2 4.9 5.2 5.1 6.1 1021.2 Monthly totals 60.9 37.7 67.0 68.7 18.5 Highest values 11.5 14.1 10.7 7.8 8.9 8.8 9.0 8.0 7.7 7.7 11.9 6.2 8.6 19.5 1.9 Lowest values -6.5 71 1.4 -7.1 -8.9 -2.5 -2.0 0.4 2.2 2.6 5.0 1971-2000 monthly climatological averages 89 7.5 1.6 -0.7 3.5 3.7 4.5 5.1 5.4 6.6 60.4 49.0 1016.1 62.5 91.6 23.4 Number of days with 2002 normal Snow/sleet falling 0 2.9 50% snow cover 09GMT 0 1.7 Hail or ice pellets 0 0.4 Thunder 0 0.4 Gale 0 0.6 Fog at 09GMT 4 2.6 Air frost 7 10.2 Ground frost 14 17.4 0.2mm precipitation 21 15.5 1.0mm precipitation 15 11.2 5.0mm precipitation 4 4.7 No sunshine 13 13.4 After a cold start, when the ground was frozen to a depth of about 15cm, January became progressively milder and wetter. No snowfall was observed." Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 3 cloud increasing 20 recent drizzle 21 recent rain 41 fog patches 44,45 fog 50 intermittent slight drizzle 60 intermittent slight rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR FEBRUARY 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 21 13 61 97 12.2 86 13.4 5.0 6.0 7.8 7.3 7.7 7.9 7.7 7.8 10 0 0.2 0.0 000000 1009.5 0.2 0.0 3.1 02 8 20 13 02 97 13.2 74 13.3 11.7 9.1 9.7 9.3 9.0 8.4 7.8 7.8 10 0 1.2 0.0 000000 1011.5 3.5 0.0 1.5 03 8 23 13 60 97 11.0 76 11.0 9.2 6.1 8.4 8.3 8.9 8.8 8.1 8.0 10 0 9.6 0.0 000000 1006.5 10.5 0.0 0.8 04 2 22 05 01 97 5.8 95 12.5 1.3 -0.9 5.1 5.4 7.1 8.3 8.1 8.0 10 0 8.4 0.0 000000 1011.5 7.6 0.0 1.0 05 8 20 09 02 97 10.6 81 13.0 5.8 6.1 8.6 8.4 8.6 8.2 7.8 8.1 10 0 1.7 3.4 000000 998.0 1.4 0.0 1.2 06 0 25 09 02 97 6.8 74 10.1 4.4 1.0 5.6 5.8 7.0 8.0 7.8 8.1 10 0 0.0 6.9 000000 1005.0 0.0 0.0 1.4 07 5 23 05 03 97 2.3 95 11.5 0.3 -3.0 3.4 3.8 5.7 7.4 7.5 8.1 10 0 2.6 0.0 000000 1020.0 2.4 0.0 1.0 08 8 27 02 02 97 10.0 90 13.0 2.3 6.0 6.8 7.2 7.3 7.3 7.2 8.1 10 0 0.3 0.0 000000 1019.5 0.3 0.0 1.3 09 8 31 09 21 97 11.2 71 12.0 9.6 7.3 8.8 8.6 8.7 8.0 7.5 7.9 10 0 2.8 1.7 000000 1007.0 1.1 0.0 1.8 10 0 27 05 02 97 8.0 78 12.6 6.2 2.2 5.7 5.9 7.1 8.0 7.7 8.1 10 0 0.1 1.5 000000 1012.0 0.1 0.0 1.3 11 8 22 05 21 97 12.6 89 13.3 8.0 2.6 9.5 9.0 8.7 8.1 7.7 8.0 10 0 5.9 0.0 000000 1002.5 5.2 0.0 1.2 12 6 36 05 02 97 9.8 88 13.2 9.2 5.5 8.0 8.7 9.1 8.8 8.1 8.1 10 0 0.0 2.0 000000 1012.0 0.0 0.0 1.0 13 8 00 00 02 06 6.7 97 10.0 6.0 1.4 7.3 7.6 8.0 8.8 8.4 8.2 10 0 8.2 1.3 000100 1017.5 1.8 0.0 1.1 14 2 36 05 02 97 4.3 84 9.3 3.1 -1.8 4.6 5.2 6.1 8.2 8.2 8.4 10 0 0.0 8.8 000000 1031.0 0.0 0.0 1.0 15 3 03 02 02 97 1.0 96 9.0 -2.2 -6.0 2.5 3.1 5.3 7.3 7.7 8.4 40 0 0.0 6.7 000000 1036.0 0.0 6.4 1.1 16 0 02 02 02 97 4.1 89 10.1 0.8 -1.5 3.4 3.8 5.4 6.8 7.2 8.2 10 0 0.0 9.2 000000 1034.0 0.0 0.0 1.3 17 9 00 00 43 04 1.1 93 8.3 -1.3 -5.3 3.3 3.4 4.9 6.5 6.9 8.0 10 0 0.7 3.8 000000 1025.5 0.4 7.1 0.6 18 6 24 02 01 96 5.5 90 9.9 1.1 -2.1 3.9 4.4 5.5 6.4 6.6 7.9 10 0 0.0 8.4 000000 1024.5 0.0 0.0 1.7 19 8 25 05 02 97 9.5 74 12.1 5.5 3.5 6.1 5.7 6.1 6.4 6.7 7.8 10 0 9.8 0.6 000000 1021.5 4.5 0.0 1.3 20 6 27 09 02 97 9.4 65 11.6 9.1 5.5 7.4 7.4 7.6 7.2 6.8 7.6 10 0 2.5 5.6 000000 1000.5 1.8 0.0 2.1 21 7 29 02 02 97 2.3 88 11.1 1.6 -2.2 3.3 3.8 5.7 7.1 7.0 7.6 10 0 2.3 0.4 004000 1025.0 2.4 0.0 1.2 22 8 23 09 21 97 11.1 86 14.4 2.3 6.5 7.7 7.2 7.0 6.9 6.8 7.6 10 0 0.2 6.8 000000 1002.0 0.3 0.0 2.3 23 7 30 05 25 97 6.1 73 7.9 4.0 1.5 4.8 4.1 6.3 7.4 7.1 7.6 10 0 0.1 5.7 504000 1005.0 0.1 0.0 1.7 24 8 32 05 02 97 4.0 81 9.8 0.8 -3.5 3.4 3.6 5.0 6.6 6.8 7.6 10 0 12.1 0.0 000000 1015.5 11.4 0.0 0.6 25 8 23 02 02 96 10.3 92 12.3 4.0 1.2 7.2 6.8 6.8 6.6 6.5 7.5 10 0 10.8 0.0 000000 1003.5 13.2 0.0 0.8 26 7 22 19 02 97 9.2 83 12.6 9.2 7.9 8.4 8.3 8.4 7.6 7.0 7.5 20 0 3.7 5.3 000000 992.0 1.1 0.0 1.8 27 1 24 09 02 97 5.2 76 9.6 2.7 -0.5 4.4 4.8 6.4 7.6 7.4 7.6 10 0 0.0 6.1 000000 1000.5 0.0 0.0 1.5 28 0 25 02 02 97 5.1 86 10.7 3.0 -1.7 4.3 4.5 6.0 7.1 7.2 7.7 10 0 0.1 4.9 004000 1000.0 0.1 0.0 1.1 Monthly means 7.4 84 11.3 4.4 1.8 6.1 6.1 7.0 7.6 7.4 7.9 1012.5 Monthly totals 83.3 89.1 69.4 13.5 37.8 Highest values 13.2 14.4 11.7 9.1 9.7 9.3 9.1 8.8 8.4 8.4 12.1 9.2 13.2 7.1 3.1 Lowest values 1.0 65 7.9 -2.2 -6.0 2.5 3.1 4.9 6.4 6.5 7.5 1971-2000 monthly climatological averages 88 8.3 1.6 -1.3 3.4 3.6 4.5 5.0 5.1 6.1 42.8 67.5 1016.8 45.7 95.2 31.1 Number of days with 2002 normal Snow/sleet falling 1 3.0 50% snow cover 09GMT 0 1.7 Hail or ice pellets 3 0.4 Thunder 1 0.2 Gale 0 0.3 Fog at 09GMT 0 2.4 Air frost 2 9.3 Ground frost 11 17.5 0.2mm precipitation 18 11.4 1.0mm precipitation 14 9.1 5.0mm precipitation 7 3.0 No sunshine 9 9.2 Another mild winter month, with little frost. The warmest February since 1990 and, before that, as warm as 1961. A very wet month, with frequent rain days, but also a sunny month. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 1 cloud decreasing 2 sky not changing 3 cloud increasing 21 recent rain 25 recent rain shower 43 fog 60 intermittent slight rain 61 continuous slight rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (X5 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR MARCH 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 33 05 03 96 1.9 94 8.8 -1.7 -5.1 2.8 3.3 5.2 6.9 7.4 7.7 40 0 0.0 1.3 000000 1010.5 0.0 5.3 1.2 02 2 30 05 02 97 2.8 91 9.2 -0.3 -6.8 2.2 2.6 4.3 6.2 6.9 7.6 10 0 tr 6.9 000000 1019.5 0.0 2.0 1.1 03 8 27 02 02 96 6.2 97 10.0 2.8 -2.2 5.5 5.1 5.8 6.4 6.4 7.5 10 0 0.0 0.2 000000 1020.5 0.0 0.0 0.9 04 8 23 02 02 97 6.9 84 9.2 6.1 3.9 6.4 6.2 6.6 6.8 6.6 7.4 10 0 0.0 0.0 000000 1020.5 0.0 0.0 0.8 05 8 30 02 02 97 7.0 90 13.5 3.5 -0.6 5.5 5.6 6.4 7.0 6.7 7.4 10 0 0.0 4.3 000000 1016.0 0.0 0.0 1.2 06 7 23 05 03 97 9.4 70 12.4 5.1 -0.7 5.8 5.8 6.6 7.0 6.9 7.4 10 0 tr 0.0 000000 1008.0 0.0 0.0 1.4 07 7 25 02 02 97 11.7 83 16.0 9.4 4.4 8.3 7.2 8.0 7.5 7.0 7.4 10 0 0.0 8.0 000000 1017.5 0.0 0.0 2.0 08 8 24 02 02 97 9.8 90 15.2 5.5 0.3 7.3 7.2 7.9 8.0 7.5 7.5 10 0 0.2 2.0 000000 1025.5 0.4 0.0 1.5 09 1 26 05 02 97 6.7 72 11.5 1.6 -2.9 6.3 6.4 7.9 8.4 7.8 7.8 10 0 tr 8.6 000000 1013.0 0.0 0.0 1.8 10 7 22 02 03 97 9.5 73 11.1 0.1 -3.6 5.2 5.1 6.5 7.7 7.7 7.8 10 0 6.2 0.6 000000 1011.5 6.8 0.0 1.6 11 8 23 02 61 96 7.8 93 13.9 7.3 3.5 7.2 7.2 7.6 7.8 7.6 7.9 10 0 1.1 4.6 000000 1010.0 1.7 0.0 0.9 12 8 27 02 60 95 6.1 95 12.1 4.3 1.0 7.2 7.2 8.0 8.1 7.7 7.9 10 0 5.0 1.8 000000 1015.0 9.0 0.0 0.9 13 8 31 02 61 96 5.1 89 7.1 4.7 4.0 6.8 7.1 8.0 8.4 7.7 8.0 10 0 0.2 0.0 000000 1018.0 0.3 0.0 1.8 14 8 03 13 02 97 5.6 67 6.7 4.7 2.3 5.2 5.4 6.6 7.6 7.6 8.0 10 0 5.9 0.0 000000 1013.0 8.7 0.0 1.1 15 8 09 09 02 96 6.7 93 9.8 3.4 2.4 6.3 6.1 6.6 7.1 7.1 8.0 10 0 4.0 0.0 000000 1007.0 3.6 0.0 0.3 16 8 14 05 02 96 9.8 93 15.3 6.7 2.2 7.4 7.2 7.2 7.2 7.1 7.9 10 0 8.3 3.0 000000 1011.0 5.0 0.0 1.0 17 8 27 02 21 96 10.0 95 14.1 8.6 3.2 8.4 8.3 8.4 7.9 7.5 7.9 20 0 2.7 3.5 000000 1006.0 2.2 0.0 1.0 18 8 22 09 02 97 8.8 92 11.1 8.0 3.3 8.3 8.2 8.7 8.5 8.0 7.9 10 0 9.2 0.1 000000 994.0 5.4 0.0 1.0 19 7 21 02 02 97 8.8 90 12.3 7.0 4.1 7.5 7.4 8.2 8.4 8.1 8.1 10 0 3.8 0.9 000000 1003.5 6.1 0.0 0.9 20 7 18 02 02 97 10.9 87 13.2 7.2 4.6 8.9 8.8 9.2 8.9 8.2 8.1 10 0 3.2 0.0 000000 1014.0 5.0 0.0 0.6 21 8 22 02 02 97 11.9 85 15.9 9.8 7.5 9.7 9.6 10.0 9.3 8.5 8.2 10 0 0.0 2.8 000000 1018.0 0.0 0.0 1.2 22 8 20 02 03 97 10.6 88 16.1 8.4 3.3 8.9 8.9 9.5 9.5 8.8 8.4 10 0 0.0 1.9 000000 1025.5 0.0 0.0 1.4 23 8 09 05 02 97 8.3 80 13.5 7.7 3.8 9.3 9.4 10.0 9.8 9.0 8.5 10 0 0.0 5.4 000000 1032.5 0.0 0.0 1.9 24 1 21 02 02 97 8.7 68 12.5 2.8 -1.0 7.2 7.3 8.8 9.6 9.1 8.8 10 0 0.0 4.6 000000 1034.0 0.0 0.0 1.8 25 7 15 02 03 94 6.9 82 15.3 2.7 -0.7 7.3 7.4 8.8 9.4 9.1 8.9 10 0 0.0 6.1 000000 1029.5 0.0 0.0 2.5 26 3 22 05 02 97 8.1 69 12.1 6.5 4.4 8.2 8.2 9.6 9.8 9.1 9.0 10 0 0.0 8.6 000000 1031.0 0.0 0.0 1.7 27 0 03 02 02 97 7.2 78 13.2 -0.1 -2.1 5.7 6.2 8.2 9.4 9.2 9.0 10 0 0.0 11.0 000000 1033.5 0.0 0.3 1.5 28 0 09 02 46 07 6.6 74 15.1 1.4 -1.4 6.1 6.3 8.1 9.3 9.1 9.0 10 0 0.0 10.4 000000 1028.5 0.0 0.0 2.7 29 1 36 02 02 96 9.8 76 17.5 2.7 -0.7 6.8 6.6 8.0 9.1 9.0 9.0 10 0 0.0 11.4 000000 1022.5 0.0 0.0 1.9 30 3 22 02 03 97 8.9 73 18.3 2.0 -0.6 7.7 7.2 8.4 9.3 9.0 9.0 10 0 tr 9.7 000000 1020.5 0.0 0.0 2.3 31 8 18 02 02 06 10.9 93 13.0 6.4 3.4 9.6 8.3 9.2 9.6 9.2 9.0 10 0 tr 0.1 000000 1015.5 0.0 0.0 0.9 Monthly means 8.0 84 12.7 4.7 1.1 6.9 6.9 7.8 8.3 8.0 8.1 1017.6 Monthly totals 49.8 117.8 54.2 7.6 42.8 Highest values 11.9 18.3 9.8 7.5 9.7 9.6 10.0 9.8 9.2 9.0 9.2 11.4 9.0 5.3 2.7 Lowest values 1.9 67 6.7 -1.7 -6.8 2.2 2.6 4.3 6.2 6.4 7.4 1971-2000 monthly climatological averages 84 11.2 3.3 0.5 5.2 5.5 6.4 6.6 6.5 6.7 48.5 102.9 1015.5 47.5 24.2 44.2 Number of days with 2002 normal Snow/sleet falling 0 2.0 50% snow cover 09GMT 0 0.2 Hail or ice pellets 0 1.0 Thunder 0 0.5 Gale 0 0.4 Fog at 09GMT 0 0.9 Air frost 3 5.4 Ground frost 13 14.7 0.2mm precipitation 12 14.6 1.0mm precipitation 10 10.1 5.0mm precipitation 5 2.5 No sunshine 6 6.7 A warm and sunny month, although the sunshine total was mainly a result of sunny days during the 23rd - 30th. No snow, thunder or hail recorded. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 1 cloud decreasing 2 sky not changing 3 cloud increasing 21 recent rain 46 fog 60 intermittent slight rain 61 continuous slight rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR APRIL 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 7 18 05 02 97 12.5 77 15.9 9.3 5.1 9.6 9.3 9.9 9.7 9.2 9.1 00 0 0.0 4.1 000000 1015.0 0.0 0.0 1.9 02 6 20 02 02 96 11.5 82 19.3 8.7 6.6 9.6 9.6 10.2 10.0 9.5 9.1 00 0 0.0 2.0 000000 1012.5 0.0 0.0 2.9 03 7 18 02 02 96 15.1 58 21.4 9.0 5.8 9.9 10.0 10.8 10.5 9.6 9.2 00 0 0.0 9.5 000000 1006.5 0.0 0.0 3.2 04 0 32 02 02 94 12.5 75 18.8 6.5 2.5 9.5 9.2 10.7 10.7 10.0 9.4 00 0 0.0 11.0 000000 1011.0 0.0 0.0 2.6 05 7 36 05 03 96 9.5 78 18.3 6.2 1.8 9.0 8.6 10.6 10.7 10.2 9.5 00 0 0.0 9.0 000000 1008.5 0.0 0.0 3.4 06 0 04 09 02 97 9.0 51 12.8 6.3 4.0 8.0 8.4 10.1 10.7 10.3 9.7 00 0 0.0 12.0 000000 1017.5 0.0 0.0 4.4 07 1 04 05 02 97 8.5 68 13.9 4.1 1.6 6.8 7.6 9.1 10.2 9.9 9.7 00 0 0.0 11.5 000000 1024.5 0.0 0.0 3.1 08 0 04 05 02 97 9.4 75 14.0 3.1 -1.6 6.5 7.2 9.1 10.0 9.9 9.8 00 0 0.0 9.5 000000 1024.0 0.0 0.0 2.1 09 0 04 02 02 97 7.8 76 10.4 1.2 -1.6 6.1 7.1 8.9 9.9 9.7 9.8 90 0 0.0 2.5 000000 1026.0 0.0 0.0 1.9 10 0 09 09 02 97 9.4 58 13.4 5.0 -0.4 6.6 7.1 8.6 9.4 9.4 9.6 90 0 0.0 11.5 000000 1022.0 0.0 0.0 2.7 11 2 36 09 02 97 9.2 65 12.7 4.0 1.4 6.4 7.0 8.7 9.4 9.1 9.6 90 0 0.0 6.1 000000 1013.5 0.0 0.0 3.2 12 0 36 09 02 97 9.0 60 13.5 2.4 -0.5 6.1 6.9 8.6 9.4 9.2 9.5 90 0 0.0 8.9 000000 1010.5 0.0 0.0 3.1 13 1 36 05 02 97 6.8 81 10.3 2.5 0.5 6.3 6.8 8.6 9.3 9.2 9.5 90 0 tr 3.5 004000 1013.0 0.0 0.0 1.8 14 6 33 02 02 97 10.1 61 13.7 0.0 -3.0 6.6 6.4 7.9 9.0 9.1 9.4 90 0 0.0 3.9 000000 1014.0 0.0 0.0 1.4 15 7 36 02 02 97 9.0 75 14.5 6.3 3.0 8.0 8.2 9.1 9.2 9.1 9.4 90 0 0.0 1.4 000000 1017.0 0.0 0.0 1.4 16 2 21 02 02 96 11.6 62 16.9 0.4 -2.2 5.8 6.4 x 9.1 9.2 9.4 90 0 0.0 11.3 000000 1018.0 0.0 0.0 1.2 17 1 19 02 02 97 12.2 62 16.7 2.7 -1.2 6.6 6.7 x 9.6 9.4 9.4 90 0 0.6 6.2 000100 1016.5 1.8 0.0 2.2 18 1 30 02 02 97 11.4 67 15.6 3.2 -0.5 7.2 7.3 x 10.0 9.6 9.5 10 0 1.0 7.6 000000 1016.5 0.3 0.0 2.1 19 5 27 02 02 97 11.8 77 15.1 4.3 0.3 7.4 7.4 x 9.9 9.6 9.5 10 0 0.0 3.7 000000 1021.0 0.0 0.0 1.4 20 7 21 02 03 96 11.5 71 17.1 2.1 0.2 7.7 7.6 x 9.9 9.7 9.5 90 0 0.0 2.0 000000 1029.5 0.0 0.0 1.8 21 7 15 02 02 97 14.9 63 20.0 6.2 3.5 10.0 9.5 x 10.0 9.8 9.5 90 0 0.0 9.6 000000 1033.5 0.0 0.0 1.6 22 7 17 02 02 97 16.2 53 20.5 5.8 3.1 9.2 9.5 x 10.9 10.2 9.6 90 0 0.0 5.1 000000 1030.5 0.0 0.0 2.7 23 0 18 02 02 96 16.2 74 22.8 8.2 5.4 10.1 10.5 x 11.5 10.7 9.8 90 0 tr 12.3 000000 1032.5 0.0 0.0 2.1 24 8 18 02 20 94 12.3 92 22.3 10.4 7.7 12.2 12.2 x 12.2 11.3 10.0 90 0 tr 8.1 000000 1029.5 0.0 0.0 2.1 25 5 00 00 03 97 14.9 60 18.9 9.1 6.5 11.3 11.6 x 12.2 11.6 10.2 90 0 4.5 10.3 000000 1024.5 3.0 0.0 2.6 26 8 22 09 61 97 9.0 93 15.3 8.1 6.7 11.1 11.4 x 12.4 11.6 10.5 10 0 3.4 2.9 000000 1005.0 1.6 0.0 1.2 27 1 31 09 02 97 11.2 74 15.1 5.0 1.9 8.1 8.5 x 11.5 11.3 10.6 10 0 9.1 7.5 000000 1012.0 6.2 0.0 2.0 28 8 24 13 25 97 13.0 71 15.3 8.7 7.1 11.0 10.8 x 11.5 11.1 10.6 10 0 1.8 5.4 000000 996.0 1.0 0.0 2.0 29 6 27 13 02 97 11.9 65 14.9 5.2 3.1 8.3 8.6 x 11.3 11.0 10.6 10 0 5.8 9.0 000000 997.5 6.2 0.0 1.9 30 8 23 09 61 96 11.0 93 11.0 8.4 5.1 9.9 9.7 x 10.9 10.7 10.6 10 0 11.0 0.0 000000 998.5 5.8 0.0 2.4 Monthly means 11.3 71 16.0 5.4 2.4 8.4 8.6 x 10.4 10.0 9.7 1016.6 Monthly totals 37.2 207.4 25.9 0.0 68.4 Highest values 16.2 22.8 10.4 7.7 12.2 12.2 x 12.4 11.6 10.6 11.0 12.3 6.2 0.0 4.4 Lowest values 6.8 51 10.3 0.0 -3.0 5.8 6.4 x 9.0 9.1 9.1 1971-2000 monthly climatological averages 77 13.7 4.9 2.0 7.5 7.9 8.6 9.0 8.5 8.3 47.2 143.1 1015.4 50.4 6.6 44.2 Number of days with 2002 normal Snow/sleet falling 0 1.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 1 1.0 Thunder 1 0.8 Gale 0 0.0 Fog at 09GMT 0 0.1 Air frost 0 1.0 Ground frost 8 9.0 0.2mm precipitation 8 12.8 1.0mm precipitation 7 9.5 5.0mm precipitation 3 3.2 No sunshine 1 3.1 A sunny month (sunniest April since 1990), with mean daytime temperatures the highest in 50 years (equal to 1987). No measurable rain 21 March - 20 April. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 3 cloud increasing 20 recent drizzle 25 recent rain shower 61 continuous slight rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (X1 slight snow, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR MAY 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 1 29 05 02 97 12.4 58 15.6 6.0 3.4 7.8 8.2 x 10.7 10.4 10.5 10 0 0.0 10.9 000000 1002.5 0.0 0.0 1.8 02 6 27 02 02 97 12.5 68 16.5 2.5 0.4 7.4 8.1 x 11.0 10.6 10.5 10 0 0.0 8.5 000000 1008.5 0.0 0.0 1.9 03 0 31 02 02 97 11.1 70 15.2 5.6 2.2 8.2 8.7 x 11.2 10.7 10.5 10 0 0.1 9.8 000000 1018.0 0.1 0.0 1.9 04 7 04 05 02 97 10.0 68 13.8 4.8 2.2 8.8 9.1 x 11.3 10.9 10.5 10 0 0.0 6.7 000000 1023.0 0.0 0.0 1.7 05 6 33 09 02 97 11.1 53 12.8 3.9 0.8 8.1 8.3 x 11.0 10.8 10.6 00 0 1.4 5.1 000000 1025.5 2.8 0.0 2.6 06 8 36 02 21 96 10.4 85 15.7 6.8 6.4 9.7 9.6 x 10.7 10.6 10.6 10 0 5.4 2.1 000000 1022.5 3.0 0.0 1.2 07 8 04 02 50 95 10.1 97 15.7 9.1 5.5 10.4 10.4 x 11.0 10.6 10.6 10 0 0.1 2.7 000000 1021.5 0.1 0.0 0.8 08 2 01 02 02 96 9.5 85 16.6 7.6 4.1 9.6 9.2 x 11.1 10.7 10.6 10 0 0.0 7.4 000000 1020.5 0.0 0.0 1.4 09 8 03 09 02 97 10.6 82 12.9 9.3 7.2 10.3 10.3 x 11.3 10.7 10.6 10 0 tr 0.0 000000 1014.5 0.0 0.0 0.8 10 8 32 02 05 95 12.9 84 16.5 10.6 9.9 11.6 11.5 x 11.5 10.7 10.6 10 0 0.0 0.0 000000 1009.5 0.0 0.0 1.4 11 7 31 02 05 96 14.3 74 19.0 11.2 8.6 11.7 11.7 x 11.8 11.0 10.6 10 0 0.0 7.0 000000 1011.0 0.0 0.0 2.5 12 8 00 00 02 96 12.2 72 17.6 7.2 5.9 11.1 11.1 x 12.2 11.5 10.8 10 0 1.0 5.1 000000 1014.0 1.6 0.0 1.9 13 8 21 09 02 97 13.2 81 14.9 10.1 7.6 11.9 11.9 x 12.4 11.6 10.9 10 0 10.9 0.0 000000 1008.5 9.1 0.0 0.5 14 7 28 13 02 97 14.9 65 17.0 10.7 9.4 11.8 11.7 x 12.1 11.6 11.0 10 0 0.3 7.7 000000 1010.0 0.2 0.0 2.4 15 7 23 09 02 97 16.0 69 20.2 10.5 9.0 12.6 12.4 x 12.6 11.8 11.1 10 0 0.0 11.1 000000 1023.0 0.0 0.0 2.4 16 1 16 02 02 97 18.9 62 25.9 7.1 5.7 11.4 11.7 x 13.1 12.3 11.2 10 0 0.0 12.1 000000 1020.5 0.0 0.0 4.6 17 8 09 09 02 97 21.5 56 23.5 15.0 11.6 14.5 14.4 14.7 15.1 12.8 11.4 10 0 1.6 4.2 000000 1010.5 0.8 0.0 3.1 18 8 15 05 02 96 13.5 92 18.9 13.5 13.5 14.8 14.9 15.1 14.4 13.2 11.6 10 0 1.9 2.7 000000 1011.0 1.0 0.0 1.6 19 7 22 02 02 97 17.0 74 20.1 11.3 9.2 14.0 13.9 14.3 14.1 13.2 11.9 10 0 0.0 7.3 000000 1017.0 0.0 0.0 2.8 20 8 14 05 02 97 16.0 66 18.2 13.0 10.9 14.9 14.9 15.2 14.9 13.6 12.1 10 0 6.3 0.6 000000 1011.0 1.3 0.0 1.4 21 7 18 05 02 97 15.8 72 17.8 12.4 10.6 14.5 14.4 15.0 14.8 13.7 12.3 10 0 6.4 5.2 000000 1001.0 5.4 0.0 1.8 22 7 20 13 02 97 15.9 64 16.8 12.9 11.3 14.4 14.5 15.0 14.9 13.8 12.4 10 0 5.2 6.7 000000 994.5 1.8 0.0 2.0 23 7 18 09 02 97 14.3 68 18.8 11.1 9.9 13.8 13.8 14.4 14.8 13.9 12.6 10 0 5.6 9.6 000000 1004.5 5.1 0.0 2.4 24 8 18 13 63 95 13.7 91 17.3 10.6 9.4 13.0 13.6 14.4 15.0 14.0 12.7 10 0 1.4 6.0 000000 1000.0 0.4 0.0 2.1 25 6 22 09 02 97 14.0 64 17.2 9.4 6.9 12.3 12.5 13.6 14.4 13.7 12.8 10 0 12.2 9.5 000000 1008.0 5.7 0.0 2.3 26 8 14 09 02 97 10.4 87 13.0 9.0 8.7 12.7 12.7 13.4 14.3 13.7 12.7 10 0 9.8 2.9 005100 997.0 2.2 0.0 0.6 27 4 18 02 02 97 13.0 69 17.7 3.7 2.1 9.9 10.6 12.4 13.6 13.4 12.9 10 0 0.4 10.4 000000 1003.0 0.4 0.0 1.7 28 8 16 05 02 97 13.5 77 15.1 7.9 5.8 12.7 12.8 13.6 14.0 13.5 12.8 10 0 0.6 1.7 000000 1004.5 0.8 0.0 1.6 29 8 23 05 02 97 13.8 59 16.9 10.0 7.4 12.7 12.7 13.2 13.8 13.2 12.7 10 0 0.0 8.5 000000 1011.5 0.0 0.0 2.0 30 7 21 02 02 97 14.3 67 17.6 9.6 6.5 12.4 12.5 13.3 13.9 13.3 12.7 10 0 3.3 5.1 000000 1020.5 1.4 0.0 1.2 31 1 23 02 02 06 17.6 57 20.2 7.4 4.4 11.6 11.9 13.3 14.0 13.3 12.7 10 0 0.0 12.5 000000 1026.0 0.0 0.0 1.8 Monthly means 13.7 72 17.3 9.0 7.0 11.6 11.7 12.9 12.2 11.5 1012.0 Monthly totals 73.9 189.1 43.2 0.0 58.2 Highest values 21.5 25.9 15.0 13.5 14.9 14.9 15.2 15.1 14.0 12.9 12.2 12.5 9.1 0.0 4.6 Lowest values 9.5 53 12.8 2.5 0.4 7.4 8.1 10.7 10.4 10.5 1971-2000 monthly climatological averages 73 17.4 8.0 5.6 11.0 11.2 12.4 12.4 11.5 10.5 50.9 187.6 1015.9 37.2 0.1 69.1 Number of days with 2002 normal Snow/sleet falling 0 0.1 50% snow cover 09GMT 0 0.0 Hail or ice pellets 1 0.5 Thunder 1 1.9 Gale 0 0.0 Fog at 09GMT 0 0.0 Air frost 0 0.1 Ground frost 0 2.2 0.2mm precipitation 17 12.2 1.0mm precipitation 14 8.8 5.0mm precipitation 8 2.9 No sunshine 3 2.8 A frequently cool and dull month, although night-time temperatures were above average and there was no frost. Unsettled between the 21st and 28th. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 3 cloud increasing 5 haze 21 recent rain 50 intermittent slight drizzle 63 continuous moderate rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR June 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 0 18 05 02 97 18.7 55 23.1 8.0 5.9 12.8 12.9 14.0 14.3 13.5 12.7 10 0 0.0 13.4 000000 1025.5 0.0 0.0 3.6 02 2 16 05 02 97 20.9 55 26.2 10.5 6.4 14.0 13.9 14.7 15.0 14.0 12.9 10 0 0.2 10.4 000100 1017.5 0.2 0.0 3.3 03 8 21 05 02 97 15.4 66 16.9 13.3 11.7 15.9 16.0 16.4 15.7 14.3 13.0 10 0 0.3 2.7 000000 1009.5 0.2 0.0 1.4 04 8 18 02 02 97 13.0 75 16.6 9.1 7.2 14.2 13.9 14.8 15.1 14.4 13.1 10 0 tr 2.1 000000 1006.5 0.0 0.0 1.9 05 7 20 09 02 97 13.2 74 15.9 10.7 9.3 13.8 13.9 15.0 15.1 14.3 13.3 10 0 23.6 0.0 000000 999.5 10.8 0.0 0.5 06 8 32 02 02 96 15.9 95 17.8 12.1 11.7 14.3 14.1 14.3 14.5 14.1 13.3 10 0 1.0 0.1 000000 1000.0 1.0 0.0 0.5 07 8 18 02 02 95 14.5 93 15.5 14.5 14.3 15.3 15.3 15.2 14.8 14.0 13.4 10 0 1.0 0.0 000000 1002.0 1.5 0.0 0.5 08 7 14 05 03 97 15.5 80 17.7 12.1 10.9 14.3 14.0 14.3 14.4 13.9 13.3 10 0 tr 2.3 000000 1005.0 0.0 0.0 1.1 09 8 22 09 50 97 13.2 84 15.1 12.2 9.4 14.6 14.4 14.5 14.5 14.0 13.3 10 0 3.4 3.2 000000 1005.5 3.6 0.0 1.1 10 6 23 09 02 97 15.1 65 17.1 10.6 8.4 12.8 12.9 13.9 14.1 13.8 13.4 10 0 3.6 5.5 000000 1007.0 1.1 0.0 1.5 11 1 18 05 03 97 15.3 61 18.3 8.1 5.4 12.2 12.7 13.9 14.4 13.9 13.3 10 0 4.8 8.0 000000 1013.0 7.3 0.0 1.9 12 8 33 02 02 97 15.3 85 17.7 11.4 11.1 14.4 14.4 14.8 14.8 14.0 13.4 10 0 1.2 1.0 000000 1013.0 4.1 0.0 1.4 13 8 27 02 21 96 15.3 92 20.2 11.2 11.2 14.3 14.4 15.0 15.0 14.2 13.4 10 0 tr 2.1 000000 1014.0 0.0 0.0 1.5 14 8 18 02 02 97 20.2 78 21.7 15.1 13.6 15.9 15.8 15.9 15.5 14.5 13.4 10 0 0.2 0.9 000000 1013.5 0.3 0.0 1.5 15 7 20 05 02 97 17.6 70 21.0 12.8 11.1 15.6 15.6 16.0 15.8 14.7 13.5 10 0 0.3 5.7 000000 1014.0 0.4 0.0 2.2 16 8 23 09 02 97 16.2 92 22.5 14.7 13.6 16.6 16.4 16.4 16.1 15.1 13.7 10 0 0.0 0.6 000000 1015.0 0.0 0.0 1.0 17 0 14 02 02 97 22.5 67 25.1 13.5 11.8 15.6 15.8 16.4 16.2 15.1 13.9 10 0 0.6 10.5 000000 1013.5 0.2 0.0 2.0 18 8 22 05 02 97 17.1 77 22.7 15.6 14.6 17.8 18.0 18.0 17.5 15.9 14.0 10 0 0.0 9.5 000000 1015.0 0.0 0.0 2.4 19 2 21 02 02 97 18.7 57 21.8 9.7 8.6 14.9 15.6 17.0 17.5 16.3 14.3 10 0 0.0 12.3 000000 1022.5 0.0 0.0 2.5 20 8 04 02 02 97 14.2 77 23.1 12.1 11.0 15.9 16.5 17.4 17.5 16.5 14.5 00 0 1.2 6.5 000000 1020.0 1.4 0.0 3.3 21 8 18 05 02 97 15.5 75 21.8 12.3 11.0 15.9 16.4 17.4 17.5 16.5 14.7 00 0 2.4 4.5 000000 1020.0 3.2 0.0 1.3 22 7 18 02 02 97 17.7 71 19.1 13.9 13.9 17.3 17.3 17.5 17.5 16.5 14.8 00 0 tr 2.1 000000 1017.5 0.0 0.0 2.0 23 4 22 09 02 97 17.7 55 20.8 9.8 7.4 16.3 15.6 16.1 16.9 16.3 14.9 00 0 0.0 8.0 000000 1020.5 0.0 0.0 2.2 24 0 22 02 02 97 18.9 68 22.9 8.3 6.8 13.8 14.5 16.4 17.0 16.4 15.0 00 0 0.0 13.1 000000 1025.5 0.0 0.0 2.9 25 0 27 02 02 97 18.2 71 20.2 9.2 7.6 14.4 15.0 16.6 17.3 16.6 15.0 00 0 0.0 8.2 000000 1027.0 0.0 0.0 2.0 26 0 25 05 02 97 18.7 69 24.7 9.3 7.5 14.3 14.9 16.5 17.0 16.6 15.1 00 0 0.0 14.4 000000 1023.0 0.0 0.0 3.6 27 7 32 09 03 97 15.6 62 18.8 11.5 9.4 15.6 16.2 17.5 18.0 17.0 15.1 00 0 0.0 7.4 000000 1019.0 0.0 0.0 2.6 28 7 36 09 02 97 16.3 73 18.8 8.7 6.6 13.3 13.9 16.0 17.0 16.8 15.2 90 0 0.0 5.0 000000 1021.5 0.0 0.0 2.8 29 7 31 02 02 97 17.0 77 19.5 7.5 5.3 14.4 14.3 15.6 16.5 16.5 15.3 90 0 0.0 8.0 000000 1022.5 0.0 0.0 2.1 30 8 27 05 02 97 16.5 79 20.5 10.1 7.6 14.0 14.4 16.0 16.5 16.5 15.2 90 0 1.3 1.5 000000 1017.0 4.8 0.0 2.3 Monthly means 16.7 73 20.1 11.3 9.7 14.8 15.0 15.8 16.0 15.2 14.0 1014.8 Monthly totals 45.1 169.0 40.1 0.0 58.9 Highest values 22.5 26.2 15.6 14.6 17.8 18.0 18.0 18.0 17.0 15.3 23.6 14.4 10.8 0.0 3.6 Lowest values 13.0 55 15.1 7.5 5.3 12.2 12.7 13.9 14.1 13.5 12.7 1971-2000 monthly climatological averages 74 20.0 10.9 8.9 14.3 14.6 15.6 15.3 14.4 12.9 52.0 180.0 1016.8 36.4 0.0 72.4 Number of days with 2002 normal Snow/sleet falling 0 0.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.1 Thunder 1 2.0 Gale 0 0.0 Fog at 09GMT 0 0.1 Air frost 0 0.1 Ground frost 0 2.2 0.2mm precipitation 15 11.5 1.0mm precipitation 10 8.9 5.0mm precipitation 1 3.5 No sunshine 2 2.3 While mean temperatures were close to average, there were few very warm days. Although rainfall was below average, around half of the total fell in a single day and there were several more rain days than usual. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 50 intermittent light drizzle 3 cloud increasing 21 recent rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR July 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 22 02 50 95 16.5 84 16.8 12.0 11.2 16.2 15.7 16.3 16.6 16.3 15.1 10 0 2.1 1.6 000000 1001.0 0.5 0.0 1.8 02 7 23 05 02 97 14.9 65 18.9 7.4 7.2 13.7 14.1 15.3 16.2 16.1 15.1 10 0 15.0 2.4 000000 1000.0 11.4 0.0 1.1 03 8 18 05 61 96 12.4 93 17.9 11.3 11.2 14.8 14.9 15.4 16.0 15.8 15.1 10 0 1.1 3.4 000000 994.5 0.4 0.0 1.6 04 0 31 05 02 97 17.6 48 20.1 9.7 7.1 12.8 13.2 14.8 15.8 15.6 15.0 10 0 2.4 7.1 000000 1017.0 3.0 0.0 2.3 05 8 18 13 02 97 14.6 95 19.7 12.6 12.3 14.9 15.2 15.9 16.2 15.7 14.9 10 0 2.7 0.3 000000 1008.0 0.6 0.0 0.9 06 8 32 05 02 97 15.4 76 20.4 13.5 13.3 15.5 15.6 16.0 16.2 15.6 14.9 10 0 0.7 3.2 000000 1015.0 1.2 0.0 1.7 07 8 24 09 02 97 16.1 88 20.2 13.6 13.6 16.2 16.2 16.4 16.5 15.7 14.9 10 0 0.7 2.7 000000 1014.5 0.3 0.0 1.5 08 8 21 09 50 97 16.4 92 19.1 14.6 14.5 16.1 16.2 16.5 16.4 15.7 15.0 10 0 12.5 0.0 000000 1007.5 9.1 0.0 0.7 09 8 15 05 63 94 17.0 95 20.4 14.5 14.3 16.2 16.4 16.4 16.4 15.7 15.0 10 0 2.2 2.7 000000 1002.0 1.3 0.0 1.1 10 2 18 05 02 97 17.4 65 20.2 9.8 7.7 13.8 14.4 15.8 16.4 15.7 15.0 10 0 0.9 8.0 000000 1008.0 0.2 0.0 1.9 11 3 18 05 02 97 16.4 71 20.6 9.7 7.8 13.6 14.2 15.5 16.5 15.8 15.0 10 0 0.3 10.7 000000 1015.5 0.1 0.0 2.0 12 8 19 02 02 97 14.4 85 18.3 9.0 7.9 14.2 14.5 15.7 16.7 16.1 15.0 10 0 1.1 0.1 000000 1020.0 1.0 0.0 0.8 13 0 31 05 02 97 18.3 63 22.4 9.2 7.5 13.7 14.0 15.3 16.1 15.8 15.1 10 0 0.0 13.5 000000 1020.5 0.0 0.0 2.5 14 0 32 02 02 97 15.2 58 25.1 9.3 4.2 14.0 14.5 15.9 16.8 16.2 15.1 10 0 0.0 14.6 000000 1027.0 0.0 0.0 3.0 15 3 27 02 02 97 21.9 61 26.1 13.0 10.7 16.2 16.0 17.0 17.6 16.6 15.1 00 0 0.0 10.0 000000 1025.0 0.0 0.0 2.8 16 7 36 02 02 97 20.6 77 25.2 16.8 14.5 18.3 18.3 18.2 18.4 17.2 15.4 00 0 0.0 8.4 000000 1020.5 0.0 0.0 2.8 17 7 34 05 02 97 17.7 70 22.6 13.1 10.8 16.4 16.8 17.8 18.4 17.5 15.6 00 0 0.0 7.1 000000 1020.5 0.0 0.0 2.6 18 8 36 02 02 97 17.6 77 23.6 14.0 12.1 16.6 16.9 17.8 18.2 17.5 15.8 00 0 0.0 6.0 000000 1020.5 0.0 0.0 2.9 19 7 03 02 02 97 19.5 65 24.9 13.3 11.5 16.3 16.6 17.7 18.0 17.5 15.9 00 0 0.0 11.1 000000 1020.0 0.0 0.0 3.0 20 6 20 05 02 97 19.8 68 24.1 13.9 12.2 17.2 17.4 18.2 18.6 17.7 16.0 90 0 tr 6.0 000000 1014.5 0.0 0.0 2.6 21 7 33 09 02 97 15.8 75 20.1 11.0 8.5 16.1 16.4 17.7 18.4 17.9 16.1 90 0 0.0 3.5 000000 1017.5 0.0 0.0 1.8 22 7 21 02 02 97 19.2 51 22.2 8.8 6.9 14.6 15.2 17.0 17.8 17.6 16.1 90 0 0.0 4.3 000000 1020.0 0.0 0.0 2.4 23 8 23 09 02 97 18.0 81 19.7 14.0 11.6 17.2 17.3 17.8 17.9 17.5 16.2 90 0 tr 0.6 000000 1012.0 0.0 0.0 1.6 24 7 25 05 02 97 17.9 72 20.3 14.7 14.1 16.7 16.9 17.8 17.8 17.4 16.1 90 0 0.0 1.6 000000 1016.5 0.0 0.0 1.9 25 7 22 09 02 97 18.5 58 21.8 12.1 9.4 16.6 16.6 17.4 17.7 17.3 16.1 90 0 0.0 3.0 000000 1016.5 0.0 0.0 1.8 26 8 23 05 02 96 19.3 86 27.4 16.6 13.8 18.1 17.9 18.2 18.0 17.5 16.1 90 0 0.0 10.0 000000 1017.0 0.0 0.0 2.4 27 7 21 02 02 97 18.4 80 25.1 15.9 13.5 19.2 19.0 17.8 18.9 18.2 16.2 90 0 0.0 6.0 000000 1017.5 0.0 0.0 2.2 28 2 22 02 02 97 24.5 61 29.2 15.8 13.1 19.2 18.9 19.0 18.9 18.3 16.4 90 0 0.0 12.5 000000 1017.5 0.0 0.0 2.5 29 7 33 02 02 97 25.5 63 31.1 16.1 13.5 19.2 19.1 19.5 19.5 18.9 16.6 90 0 0.0 8.8 000100 1017.0 0.0 0.0 3.1 30 1 00 00 02 96 22.6 70 25.2 18.4 15.5 20.2 20.4 20.7 20.3 19.5 16.8 90 0 18.2 0.2 000000 1011.0 6.2 0.0 1.4 31 8 31 05 61 95 18.0 95 21.8 17.0 16.4 18.8 19.3 20.1 20.0 10.5 17.0 10 0 18.0 0.8 000100 1006.5 4.2 0.0 0.3 Monthly means 18.0 74 22.3 12.9 11.2 16.2 16.4 17.1 17.5 16.7 15.6 1014.2 Monthly totals 77.9 170.2 39.5 0.0 61.0 Highest values 25.5 31.1 18.4 16.4 20.2 20.4 20.7 20.3 19.5 17.0 18.2 14.6 11.4 0.0 3.1 Lowest values 12.4 48 16.8 7.4 4.2 12.8 13.2 14.8 15.8 10.5 14.9 1971-2000 monthly climatological averages 74 22.7 13.0 11.0 16.3 16.8 17.7 17.5 16.6 15.3 39.7 193.4 1017.1 29.5 0.0 78.5 Number of days with 2002 normal Snow/sleet falling 0 0.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.2 Thunder 2 2.0 Gale 0 0.0 Fog at 09GMT 0 0.0 Air frost 0 0.0 Ground frost 0 0.0 0.2mm precipitation 14 10.7 1.0mm precipitation 10 7.5 5.0mm precipitation 4 2.3 No sunshine 1 1.5 A dull, wet and slightly cooler than normal July. Hot spells from 14th-16th and 26th-30th. Frequent rain 1st-12th, then no measurable rain until the 30th and 31st when heavy falls occurred. Wettest July since 1991. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 02 sky not changing 61 continuous light rain 50 intermittent light drizzle 63 continuous moderate rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR August 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 18 02 02 95 14.8 95 20.5 12.3 10.6 16.6 17.1 18.4 19.3 18.8 17.1 10 0 0.0 2.9 000100 1012.0 0.0 0.0 1.6 02 3 36 02 02 97 19.2 70 23.1 10.3 9.3 14.9 15.6 17.4 18.5 18.3 17.2 10 0 0.2 8.8 000000 1010.5 0.8 0.0 1.9 03 7 04 05 21 97 17.6 82 20.9 15.0 12.2 16.8 17.1 17.8 18.2 18.0 17.1 10 0 2.5 2.2 000000 1011.0 2.0 0.0 1.4 04 6 36 02 03 97 16.5 80 22.3 13.1 12.2 16.1 16.1 17.6 18.4 18.0 17.0 10 0 1.2 5.7 000000 1012.0 0.5 0.0 1.2 05 8 35 05 02 97 19.5 77 21.6 11.3 10.1 15.6 16.1 17.5 18.3 18.1 17.0 10 0 1.2 3.9 000100 1014.0 0.4 0.0 1.2 06 8 27 02 50 95 19.5 81 23.9 15.0 13.1 17.1 17.2 17.9 18.2 17.9 17.0 10 0 0.0 7.3 000000 1016.0 0.0 0.0 2.0 07 2 00 00 02 97 23.3 67 26.8 15.1 13.2 17.2 17.7 18.4 18.6 18.1 16.9 10 0 4.9 7.5 000000 1017.0 1.7 0.0 2.0 08 8 31 05 02 97 15.5 93 19.8 15.4 14.6 17.8 18.3 19.0 19.1 18.4 17.0 10 0 5.7 1.1 000000 1012.0 8.4 0.0 0.8 09 8 18 05 21 95 17.0 93 18.6 14.2 14.5 16.7 17.1 17.9 18.5 18.2 17.1 10 0 8.8 0.5 000100 1002.5 2.3 0.0 0.6 10 7 31 05 02 97 16.5 90 22.3 13.4 12.5 16.1 16.2 17.1 17.9 18.0 17.0 10 0 0.0 4.7 000000 1004.0 0.0 0.0 1.4 11 7 27 02 02 97 18.0 76 21.7 13.5 11.5 17.7 17.2 17.3 17.7 17.6 17.0 10 0 0.1 4.0 000000 1007.5 0.1 0.0 1.6 12 7 22 02 02 97 18.4 68 22.8 14.7 13.6 16.8 17.2 17.8 18.0 17.6 16.9 10 0 0.0 7.7 000000 1013.0 0.0 0.0 2.2 13 8 20 02 02 97 18.8 86 25.1 12.5 11.2 15.4 15.6 17.0 17.8 17.6 16.9 10 0 0.0 9.0 000000 1019.5 0.0 0.0 2.1 14 7 00 00 02 97 20.2 82 25.5 15.2 13.1 16.9 17.2 18.0 18.3 17.7 16.9 00 0 0.0 10.8 000000 1019.0 0.0 0.0 2.3 15 7 09 02 02 97 20.5 75 28.6 16.0 14.4 17.3 17.7 18.4 18.2 18.0 16.9 00 0 0.0 11.0 000000 1015.0 0.0 0.0 2.3 16 5 36 02 02 96 19.6 71 26.8 15.3 14.1 17.6 17.9 18.9 19.2 18.5 17.0 00 0 0.0 13.8 000000 1018.0 0.0 0.0 2.5 17 3 14 02 02 97 23.0 67 29.1 14.1 13.2 17.2 17.6 18.7 19.4 18.7 17.1 00 0 0.0 11.0 000000 1013.0 0.0 0.0 3.4 18 6 18 02 02 97 20.0 77 25.5 17.2 16.9 18.4 18.9 19.5 19.8 18.9 17.2 00 0 0.8 5.5 000000 1010.5 0.9 0.0 2.2 19 7 36 02 21 97 19.0 88 24.1 17.0 16.1 17.5 18.2 19.7 19.9 18.9 17.3 00 0 tr 4.0 000000 1011.5 0.0 0.0 2.1 20 8 27 02 02 96 18.5 85 22.5 16.8 15.5 17.5 17.5 19.2 19.7 18.9 17.3 00 0 0.2 1.5 000000 1013.5 0.6 0.0 1.9 21 2 32 05 02 96 18.0 85 22.2 13.1 12.7 16.5 16.9 18.1 19.2 18.7 17.4 00 0 0.0 12.0 000000 1019.5 0.0 0.0 2.9 22 7 22 05 02 97 18.0 67 22.9 11.5 9.2 16.0 16.4 17.8 18.9 18.6 17.3 00 0 0.3 12.0 000000 1020.5 0.3 0.0 2.4 23 7 25 05 60 96 16.0 85 20.6 14.0 13.5 15.0 16.1 18.2 18.9 18.4 17.2 00 0 0.0 1.5 000000 1019.0 0.0 0.0 1.2 24 3 32 02 02 96 18.0 82 23.8 13.3 10.8 14.5 14.8 16.7 18.6 18.2 17.2 00 0 1.6 7.0 000000 1020.5 1.2 0.0 1.6 25 8 36 05 03 96 16.0 96 20.2 13.3 11.0 14.0 14.8 16.7 18.6 18.1 17.1 01 0 0.0 3.0 000000 1025.0 0.0 0.0 1.9 26 7 36 09 02 97 15.0 75 16.7 11.8 9.9 13.0 13.5 15.6 18.2 17.9 17.1 00 0 0.0 0.2 000000 1025.5 0.0 0.0 1.3 27 7 36 09 02 97 15.0 86 21.1 14.3 14.0 14.0 14.8 16.0 17.7 17.5 17.0 00 0 0.0 5.5 000000 1022.0 0.0 0.0 1.4 28 7 36 05 02 95 16.5 85 20.9 12.4 8.6 12.0 14.8 16.1 17.7 17.5 16.8 00 0 0.0 6.0 000000 1022.0 0.0 0.0 0.9 29 7 27 05 10 94 18.0 83 23.3 12.9 11.0 15.0 15.2 16.6 17.8 17.5 16.8 90 0 0.0 2.5 000000 1020.5 0.0 0.0 1.5 30 7 22 05 02 97 20.0 81 21.4 16.3 15.8 16.5 16.6 17.7 18.2 17.6 16.9 90 0 0.1 3.0 000000 1018.5 0.1 0.0 1.9 31 1 32 05 02 97 17.0 66 19.1 12.0 10.3 14.5 15.2 16.7 18.0 17.7 17.1 90 0 0.0 10.0 000000 1023.0 0.0 0.0 2.7 Monthly means 18.2 80 22.7 13.9 12.5 16.1 16.5 17.7 18.5 18.1 17.1 1015.7 Monthly totals 27.6 185.6 19.3 0.0 56.4 Highest values 23.3 29.1 17.2 16.9 18.4 18.9 19.7 19.9 18.9 17.4 8.8 13.8 8.4 0.0 3.4 Lowest values 14.8 66 16.7 10.3 8.6 12.0 13.5 15.6 17.7 17.5 16.8 1971-2000 monthly climatological averages 76 22.4 12.6 10.5 16.0 16.7 17.7 17.8 17.3 16.4 54.2 188.5 1016.8 32.1 0.0 78.7 Number of days with 2002 normal Snow/sleet falling 0 0.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.1 Thunder 3 2.0 Gale 0 0.0 Fog at 09GMT 0 0.3 Air frost 0 0.0 Ground frost 0 0.0 0.2mm precipitation 11 10.1 1.0mm precipitation 7 7.1 5.0mm precipitation 2 3.2 No sunshine 0 1.6 An unremarkable month, unsettled at first then mostly dry during the final three weeks. No heavy falls of rain, and no prolonged hot weather. It was the night temperatures that lifted the mean temperature for the month. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 01 cloud decreasing, 02 sky not changing, 03 cloud increasing, 10 mist, 11 shallow fog patches, 21 recent rain, 41 fog, 50 intermittent slight drizzle,60 intermittent slight rain, 80 light rain shower VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 1 27 02 02 97 15.0 72 20.8 7.6 5.7 12.9 14.2 16.2 16.7 17.9 17.1 90 0 0.0 10.5 000000 1031.0 0.0 0.0 1.8 02 7 36 02 02 97 16.3 75 21.8 7.8 6.0 13.0 13.8 15.9 17.1 17.7 17.1 90 0 0.0 9.0 000000 1029.0 0.0 0.0 2.5 03 7 36 02 02 97 18.4 83 23.4 14.7 8.7 15.6 15.7 16.5 17.0 17.6 17.0 90 0 0.0 3.1 000000 1019.5 0.0 0.0 1.8 04 5 36 02 03 96 18.8 71 22.8 9.8 7.8 13.9 14.8 16.4 17.1 17.4 16.9 90 0 0.0 6.5 000000 1012.5 0.0 0.0 1.9 05 7 00 00 02 96 16.4 81 22.8 11.2 8.4 14.7 15.1 16.4 17.2 17.4 16.9 90 0 0.8 5.6 000000 1014.0 1.0 0.0 2.3 06 8 27 02 53 95 19.2 80 21.7 15.4 14.7 16.7 16.8 17.4 17.4 17.4 16.9 10 0 2.9 5.8 000000 1013.5 3.2 0.0 2.3 07 7 35 02 21 97 14.7 93 20.3 13.3 12.2 15.9 16.3 17.0 17.4 17.6 16.9 10 0 0.1 6.1 000000 1008.0 0.1 0.0 1.9 08 7 27 02 02 97 15.6 76 20.3 8.0 6.0 13.8 13.8 15.8 17.0 17.4 16.9 10 0 0.9 7.2 000000 1007.5 0.3 0.0 1.5 09 8 14 02 02 96 14.5 95 17.8 9.7 8.1 13.6 13.9 16.4 16.7 17.3 16.9 10 0 15.8 0.0 000000 1008.5 11.7 0.0 0.2 10 0 36 02 02 96 17.8 79 20.2 8.1 5.7 11.9 12.8 14.6 16.0 16.6 16.8 10 0 0.0 10.2 000000 1019.5 0.0 0.0 1.4 11 0 00 00 02 96 18.1 69 22.7 7.3 5.7 11.7 12.6 14.5 15.9 16.4 16.5 10 0 0.0 10.8 000000 1027.5 0.0 0.0 2.6 12 0 04 02 02 95 19.0 77 23.4 13.7 10.3 14.8 15.2 16.0 16.4 16.4 16.4 10 0 0.0 9.8 000000 1026.5 0.0 0.0 2.3 13 0 07 05 02 96 18.0 86 25.2 13.6 10.2 14.2 14.8 15.9 16.4 16.5 16.4 10 0 0.0 11.6 000000 1026.0 0.0 0.0 3.0 14 8 09 02 02 97 16.2 77 19.1 14.7 12.0 15.3 15.6 16.1 16.5 16.6 16.3 10 0 0.0 4.8 000000 1028.0 0.0 0.0 2.4 15 8 05 02 02 97 14.8 77 17.5 14.1 13.3 14.9 15.2 16.0 16.5 16.6 16.4 10 0 0.0 0.9 000000 1027.0 0.0 0.0 1.7 16 6 02 02 02 96 16.4 66 18.6 7.8 5.0 11.9 12.8 15.0 16.0 16.3 16.3 00 0 0.0 3.1 000000 1023.0 0.0 0.0 1.9 17 7 05 02 02 97 15.2 81 18.8 10.2 7.6 13.4 13.8 14.9 15.7 16.2 16.2 00 0 0.0 1.1 000000 1020.5 0.0 0.0 1.6 18 2 07 02 02 97 15.0 74 17.8 10.5 7.4 13.2 13.9 15.4 15.7 15.9 16.1 00 0 0.0 2.2 000000 1018.5 0.0 0.0 1.8 19 6 04 02 02 97 15.5 70 19.5 11.9 7.9 13.4 13.9 15.1 15.7 15.9 16.0 00 0 0.0 2.0 000000 1017.5 0.0 0.0 1.9 20 7 05 02 02 97 15.5 81 18.3 13.9 11.7 14.6 14.9 15.5 15.9 15.8 15.9 00 0 tr 0.2 000000 1022.0 0.0 0.0 1.6 21 8 05 02 02 97 14.8 75 18.7 12.1 10.7 14.0 14.3 15.3 15.7 15.7 15.8 00 0 0.0 3.2 000000 1021.5 0.0 0.0 1.9 22 7 01 02 02 97 15.7 75 17.7 11.1 7.9 13.6 14.1 15.0 15.5 15.7 15.8 00 0 tr 4.0 000000 1018.5 0.0 0.0 1.8 23 0 02 02 01 97 15.4 67 18.4 9.0 5.5 11.4 12.1 14.0 15.0 15.6 15.8 00 0 0.0 8.1 000000 1022.5 0.0 0.0 2.6 24 1 03 02 02 97 14.6 65 17.1 8.2 4.6 10.6 11.4 13.5 14.6 15.3 15.7 00 0 0.0 8.8 000000 1025.5 0.0 0.0 2.2 25 4 28 02 02 97 11.1 88 18.9 5.8 3.4 10.1 11.1 13.2 14.5 15.2 15.5 90 0 0.2 6.7 000000 1024.0 0.3 0.0 2.3 26 7 22 09 02 97 15.6 78 17.6 10.8 9.7 12.8 13.1 14.1 14.6 15.1 15.4 90 0 0.0 7.4 000000 1019.5 0.0 0.0 1.9 27 8 27 02 03 97 14.5 86 17.5 7.0 4.6 11.7 12.1 13.2 14.3 15.0 15.3 90 0 0.0 0.0 000000 1026.0 0.0 0.0 1.1 28 0 07 02 02 96 14.7 73 18.2 8.9 6.1 12.0 12.8 14.0 14.5 14.8 15.1 90 0 0.0 5.5 000000 1028.5 0.0 0.0 1.4 29 9 00 00 45 02 12.1 97 19.4 8.1 5.7 12.8 12.8 13.7 14.5 15.0 15.1 90 0 0.0 6.5 000000 1027.5 0.0 0.0 2.0 30 5 09 02 02 97 14.5 80 20.3 7.0 4.6 10.6 11.1 13.1 14.2 14.8 15.1 90 0 0.0 7.5 000000 1023.0 0.0 0.0 2.1 Monthly means 15.8 78 19.9 10.4 7.9 13.3 13.8 15.2 15.9 16.3 16.2 1021.2 Monthly totals 20.7 168.2 16.6 0.0 57.7 Highest values 19.2 25.2 15.4 14.7 16.7 16.8 17.4 17.4 17.9 17.1 15.8 11.6 11.7 0.0 3.0 Lowest values 11.1 65 17.1 5.8 3.4 10.1 11.1 13.1 14.2 14.8 15.1 1971-2000 monthly climatological averages 83 19.1 10.3 7.9 13.3 13.9 15.0 15.6 15.5 15.4 60.3 131.7 1016.4 41.2 0.0 46.2 Number of days with 2002 normal Snow/sleet falling 0 0.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.2 Thunder 0 1.2 Gale 0 0.2 Fog at 09GMT 0 0.4 Air frost 0 0.0 Ground frost 0 0.3 0.2mm precipitation 5 12.5 1.0mm precipitation 2 9.1 5.0mm precipitation 1 3.7 No sunshine 2 2.9 A remarkably dry month, with most of the rain falling on a single day, and only 0.2mm during the final 21 days of the month. However, the Septembers of 1996 and 1997 were much drier. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 1 cloud decreasing 45 fog 2 sky not changing 53 continuous moderate drizzle 3 cloud increasing 21 recent rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 3 00 00 02 97 12.7 87 21.3 9.1 5.2 11.4 11.9 13.3 14.1 14.7 15.0 90 0 0.1 2.2 000000 1021.0 0.2 0.0 1.7 02 8 00 00 02 95 15.5 95 18.8 12.7 11.6 14.1 14.3 14.5 14.5 14.8 14.9 10 0 0.2 3.1 000000 1019.0 1.0 0.0 0.8 03 8 00 00 50 96 15.1 92 19.7 14.0 11.2 14.5 14.7 14.9 15.0 14.9 14.9 10 0 0.0 7.3 000000 1023.5 0.0 0.0 1.5 04 2 27 02 02 97 12.3 82 17.8 5.3 2.7 10.0 11.0 13.3 14.5 14.9 14.9 90 0 0.0 7.2 000000 1029.5 0.0 0.0 1.6 05 4 35 02 02 96 11.0 93 19.6 6.5 2.4 10.1 10.6 12.5 13.9 14.7 14.9 90 0 0.0 4.1 000000 1027.5 0.0 0.0 1.6 06 6 36 09 02 97 14.8 86 17.6 11.0 9.5 12.7 13.0 14.0 14.2 14.6 14.8 90 0 0.0 7.8 000000 1021.5 0.0 0.0 1.8 07 8 34 02 02 97 12.3 80 15.8 11.4 8.5 12.6 12.8 13.7 14.3 14.6 14.7 90 0 0.2 0.3 000000 1019.5 0.8 0.0 1.2 08 8 00 00 02 96 12.7 89 15.4 11.3 10.1 12.8 12.9 13.8 14.2 14.6 14.7 10 0 0.0 1.5 000000 1012.5 0.0 0.0 1.6 09 2 11 02 02 96 12.0 75 14.8 8.0 4.6 10.0 10.7 12.5 13.7 14.4 14.6 90 0 tr 7.3 000000 1007.0 0.0 0.0 1.5 10 8 07 05 02 97 12.5 85 16.5 10.9 9.9 11.7 11.8 12.5 13.4 14.1 14.5 90 0 0.0 3.5 000000 1009.5 0.0 0.0 2.2 11 7 09 05 05 95 11.9 85 13.9 10.7 9.2 11.9 12.1 13.0 13.5 14.0 14.5 90 0 3.6 0.0 000000 1013.0 7.3 0.0 1.4 12 8 15 02 21 94 11.0 95 15.3 9.6 8.9 11.6 11.8 12.7 13.4 13.8 14.3 10 0 0.0 6.2 000000 1009.0 0.0 0.0 1.0 13 6 08 02 02 97 5.6 93 10.3 4.0 8.0 9.3 9.5 11.2 12.6 13.5 14.2 10 0 12.8 0.0 000000 1011.0 15.8 0.0 0.4 14 8 27 09 02 95 9.9 90 11.2 5.6 8.5 11.0 11.1 11.6 12.4 13.1 14.1 10 0 5.0 0.0 000000 1004.0 5.2 0.0 0.1 15 8 09 05 61 94 9.6 97 14.1 8.5 5.0 10.1 10.3 11.2 12.1 12.7 13.9 10 0 17.7 0.0 000000 1002.5 4.9 0.0 0.7 16 8 28 05 02 97 9.3 88 11.3 8.7 6.8 10.6 10.3 11.3 12.1 12.7 13.7 10 0 0.0 0.0 000000 1001.0 0.0 0.0 0.9 17 5 33 09 02 97 7.4 83 11.6 4.2 1.5 7.3 8.2 10.1 11.4 12.3 13.5 10 0 2.5 6.1 000000 1005.5 1.2 0.0 0.8 18 8 29 02 03 96 5.3 96 10.1 1.7 -0.4 6.6 7.2 9.3 11.1 12.6 13.4 10 0 2.5 4.4 000000 1008.0 1.0 0.0 0.5 19 1 12 02 02 96 5.3 97 11.3 -1.1 -3.4 4.5 5.3 8.0 10.2 11.2 13.1 10 0 0.0 6.5 000000 1020.0 0.0 4.5 1.1 20 8 12 02 02 97 6.9 84 12.1 3.1 -0.1 7.0 7.1 8.4 9.9 10.7 12.8 10 0 3.7 0.0 000000 1016.5 6.2 0.0 0.8 21 8 16 05 02 97 12.1 93 16.9 6.9 5.1 8.9 8.8 9.0 10.0 10.6 12.5 10 0 9.0 0.9 000000 995.0 5.2 0.0 0.6 22 8 23 05 25 95 14.5 95 16.2 11.7 6.9 11.5 11.1 10.9 10.8 10.7 12.4 10 0 4.0 0.2 000000 983.0 2.5 0.0 0.7 23 2 36 05 02 97 10.1 69 11.6 7.8 4.4 8.4 9.4 11.0 11.4 11.3 12.3 10 0 0.0 9.2 000000 1000.0 0.0 0.0 1.6 24 1 35 02 02 97 5.9 82 14.3 -0.2 -2.6 5.5 6.4 9.0 10.7 11.2 12.4 10 0 3.3 3.9 000000 1008.5 0.8 0.4 1.3 25 8 22 05 21 96 14.3 84 16.1 5.9 5.2 10.3 9.9 10.0 10.5 11.0 12.3 10 0 3.3 3.3 000000 992.0 1.0 0.0 1.7 26 0 23 17 02 97 14.0 63 15.7 8.5 4.4 8.1 8.4 9.9 10.9 11.0 12.1 10 0 2.4 7.3 000000 1009.0 2.3 0.0 2.7 27 7 30 30 02 97 12.9 67 13.7 9.5 8.4 10.8 10.7 11.0 11.0 10.7 12.1 10 0 0.1 5.4 000000 996.5 0.3 0.0 2.0 28 6 22 02 02 97 8.6 89 14.8 3.2 -1.2 6.6 7.2 9.1 10.7 11.0 12.1 10 0 tr 4.4 000000 1028.5 0.0 0.0 0.7 29 8 15 05 60 97 10.6 80 13.8 7.6 3.5 9.1 9.1 9.7 10.6 10.7 12.0 10 0 tr 0.1 000000 1014.0 0.0 0.0 1.1 30 8 12 05 02 97 10.1 90 11.0 10.0 7.1 10.6 10.6 10.9 11.0 10.7 11.9 10 0 5.2 0.0 000000 1014.0 9.3 0.0 0.2 31 8 10 02 60 08 11.0 93 13.5 9.8 9.1 10.6 10.6 10.8 10.9 11.0 11.9 10 0 0.1 0.0 000000 1018.5 0.1 0.0 0.6 Monthly means 10.9 86 14.7 7.6 5.5 10.2 10.3 11.4 12.2 12.7 13.5 1011.0 Monthly totals 75.7 102.2 65.1 4.9 36.4 Highest values 15.5 21.3 14.0 11.6 14.5 14.7 14.9 15.0 14.9 15.0 17.7 9.2 15.8 4.5 2.7 Lowest values 5.3 63 10.1 -1.1 -3.4 4.5 5.3 8.0 9.9 10.6 11.9 1971-2000 monthly climatological averages 88 15.0 7.3 4.9 9.9 10.5 11.5 12.2 12.6 13.2 68.7 100.4 1015.1 51.8 4.8 35.6 Number of days with 2002 normal Snow/sleet falling 0 0.0 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.2 Thunder 0 0.5 Gale 0 0.2 Fog at 09GMT 0 2.0 Air frost 2 0.8 Ground frost 5 4.5 0.2mm precipitation 15 14.0 1.0mm precipitation 13 11.4 5.0mm precipitation 5 4.6 No sunshine 8 6.6 A mild and generally dry start to the month, followed by cooler, unsettled conditions. Very windy on the 27th, with gusts to 60mph. First October air frost since 1997. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 50 intermittent slight rain 3 cloud increasing 60 intermittent slight rain 5 haze 61 continuous slight rain 21 recent rain 25 recent rain shower VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (00 dry, 10 moist, 20 wet, 90 cracked) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR NOVEMBER 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 18 02 02 96 13.3 92 14.9 11.5 7.1 11.1 11.1 11.2 11.4 11.2 11.9 10 0 6.5 0.1 000000 1016.5 5.0 0.0 0.3 02 9 00 00 45 03 11.1 99 15.5 9.1 5.1 10.5 10.3 11.1 11.5 11.3 11.9 10 0 14.2 0.0 000001 1013.5 7.8 0.0 0.4 03 3 27 05 02 97 11.2 87 14.7 9.5 4.8 10.1 10.5 11.5 11.9 11.5 12.0 10 0 3.5 4.3 000000 1003.5 1.4 0.0 0.7 04 2 31 05 02 97 8.9 95 14.5 6.3 1.6 8.3 8.8 10.2 11.4 11.5 12.0 10 0 0.0 7.5 000000 1016.0 0.0 0.0 0.8 05 7 24 02 02 97 9.3 95 14.2 6.0 1.8 9.0 9.2 9.9 10.9 11.3 12.1 10 0 8.5 0.0 000000 1021.0 3.8 0.0 0.4 06 8 18 09 21 97 13.7 92 13.8 9.3 11.0 11.9 11.7 11.4 11.5 11.2 12.1 10 0 9.8 0.0 000000 1009.5 5.0 0.0 0.4 07 0 27 02 02 97 7.6 75 11.2 5.2 0.9 7.2 7.8 9.6 11.0 11.3 12.0 10 0 1.7 7.7 000000 1017.0 2.9 0.0 0.6 08 8 22 05 61 96 7.9 97 13.5 5.0 1.6 7.7 7.7 8.8 10.3 10.8 12.0 10 0 8.6 0.0 000000 1012.0 8.0 0.0 0.3 09 7 27 02 02 97 8.5 91 11.1 7.9 4.6 9.4 9.4 9.9 10.5 10.6 11.8 10 0 8.0 2.1 000000 1005.5 9.0 0.0 0.9 10 8 14 05 60 94 10.5 97 14.8 8.2 6.2 9.5 9.4 9.9 10.5 10.5 11.6 10 0 1.8 0.0 000000 1000.5 1.2 0.0 0.3 11 2 20 02 02 96 8.1 96 13.2 5.7 2.0 7.7 7.8 9.4 10.5 10.7 11.5 10 0 16.7 5.5 000000 1001.5 6.4 0.0 1.0 12 8 18 05 61 95 10.9 95 12.1 8.1 5.0 8.7 9.1 9.5 10.2 10.5 11.5 10 0 15.3 0.2 000100 997.0 6.5 0.0 0.7 13 8 03 02 50 09 9.1 98 12.4 5.5 2.2 8.2 8.7 9.2 10.1 10.4 11.4 10 0 10.8 2.3 000000 988.0 8.1 0.0 0.6 14 8 18 17 02 96 9.6 73 13.4 8.8 4.1 9.4 9.4 9.7 10.1 10.3 11.3 10 0 2.8 4.0 000000 973.5 1.4 0.0 1.2 15 7 17 05 02 96 8.9 96 12.9 5.3 1.2 7.8 7.9 8.9 10.0 10.3 11.2 10 0 2.6 1.9 000000 987.3 2.5 0.0 0.2 16 8 00 00 44 07 7.2 97 9.9 6.9 2.7 8.3 8.3 9.0 10.0 10.1 11.1 10 0 8.6 0.3 000001 998.0 1.7 0.0 0.2 17 8 32 05 63 07 8.2 97 8.5 7.2 2.5 8.8 8.8 9.0 9.9 9.9 11.0 20 0 3.0 0.0 000001 1006.5 2.3 0.0 0.1 18 9 00 00 45 02 1.9 99 7.0 1.2 -1.5 6.2 6.6 8.0 9.5 9.7 11.0 10 0 tr 0.1 000001 1012.5 0.0 0.0 0.2 19 8 09 02 10 94 7.0 89 9.8 1.9 -0.1 7.2 7.2 7.9 9.0 9.4 10.9 10 0 0.1 1.0 000000 1009.0 0.1 0.0 0.7 20 8 12 05 02 10 8.6 96 11.0 6.6 6.9 7.7 7.7 8.3 9.0 9.3 10.7 10 0 2.2 0.0 000000 1002.5 2.4 0.0 0.5 21 8 18 02 60 96 10.2 92 10.8 7.7 2.4 8.8 8.5 8.6 9.1 9.2 10.6 10 0 6.3 0.0 000000 988.5 6.0 0.0 0.2 22 1 15 05 02 96 8.6 93 10.0 7.1 2.1 7.6 7.9 8.6 9.3 9.3 10.5 10 0 11.6 0.2 000000 989.5 8.1 0.0 0.4 23 8 18 02 60 95 9.0 95 11.4 5.9 0.6 7.3 7.2 8.1 9.1 9.3 10.5 10 0 5.6 2.4 000000 996.5 2.4 0.0 0.4 24 8 15 02 61 94 7.0 98 9.7 3.7 -0.9 6.7 6.6 7.9 8.8 9.1 10.4 20 0 4.3 1.3 000000 1002.5 2.2 0.0 0.1 25 9 02 02 45 04 7.3 99 7.6 5.3 0.4 7.0 7.3 8.0 8.6 8.9 10.3 10 0 0.1 0.0 000001 1003.5 0.3 0.0 0.0 26 6 14 02 02 94 5.5 99 11.7 4.4 2.2 6.7 6.8 8.0 8.6 8.8 10.2 10 0 0.0 2.2 000001 1009.5 0.0 0.0 0.5 27 7 14 09 03 97 9.2 86 11.6 5.5 1.6 6.7 7.2 7.9 8.5 8.7 10.1 10 0 2.4 1.2 000000 1006.5 3.1 0.0 0.9 28 7 18 02 02 97 9.5 95 12.2 8.3 2.0 7.4 7.3 8.3 8.8 8.7 10.0 10 0 5.4 0.0 000000 1003.0 3.2 0.0 0.3 29 9 18 02 45 04 7.2 98 9.1 5.9 0.9 7.1 7.2 8.0 8.6 8.7 10.0 10 0 0.0 1.2 000001 1007.5 0.0 0.0 0.2 30 8 20 02 02 97 6.2 96 12.0 6.2 5.6 7.9 7.7 8.4 8.8 8.8 10.1 10 0 5.8 0.0 000000 1019.5 8.7 0.0 0.8 Monthly means 8.7 94 11.8 6.5 2.9 8.3 8.4 9.1 9.9 10.0 11.1 1003.9 Monthly totals 166.2 45.5 109.5 0.0 14.3 Highest values 13.7 15.5 11.5 11.0 11.9 11.7 11.5 11.9 11.5 12.1 16.7 7.7 9.0 0.0 1.2 Lowest values 1.9 73 7.0 1.2 -1.5 6.2 6.6 7.9 8.5 8.7 10.0 1971-2000 monthly climatological averages 90 10.6 4.0 1.7 6.4 6.8 7.8 8.7 9.1 10.5 61.0 62.1 1015.2 55.6 28.8 21.8 Number of days with 2002 normal Snow/sleet falling 0 0.5 50% snow cover 09GMT 0 0.0 Hail or ice pellets 0 0.2 Thunder 1 0.2 Gale 0 0.1 Fog at 09GMT 7 3.3 Air frost 0 5.4 Ground frost 3 11.5 0.2mm precipitation 24 13.7 1.0mm precipitation 24 10.4 5.0mm precipitation 15 4.9 No sunshine 11 10.1 A remarkably wet month with rainfall on many days, but with no really large totals. Overall mild and rather cloudy, due to the cyclonic nature of the month. No air frosts or snow. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 2 sky not changing 3 cloud increasing 10 mist 21 recent rain 44,45 fog 50 intermittent slight drizzle 60 intermittent slight rain 61 continuous slight rain VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (X1 slight snow, 10 moist, 20 wet, 40 frozen) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR DECEMBER 2002 0900GMT Temperature Soil temperatures (depth in cm) Rain Fr. Pch DD N dd ff ww VV Temp RH Max Min Gmin 5 10 20 30 50 100 E SS Rain Sun SLHTGF Press hrs hrs Evap 01 8 14 09 61 95 12.0 95 12.0 6.2 6.2 9.9 9.4 9.1 8.9 8.9 10.0 20 0 1.8 1.6 000000 1000.0 1.2 0.0 1.2 02 7 24 09 02 97 9.7 81 10.5 7.4 3.9 7.9 7.8 8.4 8.5 9.1 9.9 10 0 1.8 2.0 000000 995.5 3.9 0.0 1.2 03 8 22 05 21 97 7.8 93 9.9 7.6 3.5 7.3 7.3 8.0 8.9 8.9 10.0 10 0 1.1 2.2 000000 1006.5 1.2 0.0 0.3 04 8 18 05 60 95 8.6 97 9.9 5.3 1.5 6.7 7.2 7.1 7.6 8.8 10.0 10 0 2.7 0.5 000000 1009.0 2.8 0.0 0.5 05 0 32 09 02 97 5.1 93 8.5 4.5 0.7 5.1 5.3 6.8 8.3 8.6 9.9 10 0 tr 6.2 000000 1022.0 0.0 0.0 1.1 06 8 36 05 50 97 8.1 92 8.3 4.6 1.2 6.2 6.4 6.9 7.9 8.3 9.8 10 0 0.2 0.0 000000 1029.9 0.8 0.0 1.1 07 8 03 13 20 96 5.5 94 6.1 4.5 3.8 6.1 6.1 7.0 7.8 8.1 9.6 10 0 tr 0.0 000000 1025.0 0.0 0.0 0.8 08 8 05 05 02 94 3.6 94 3.9 3.6 2.6 5.3 5.4 6.5 7.5 7.8 9.4 10 0 0.2 0.0 000000 1022.5 2.0 0.0 0.7 09 8 09 13 02 97 3.9 86 5.5 3.1 2.1 4.6 4.7 5.9 7.1 7.5 9.3 10 0 0.0 3.9 000000 1023.0 0.0 0.0 1.7 10 8 08 13 02 96 1.7 83 3.3 1.1 -1.6 2.8 2.9 4.5 6.5 7.2 9.1 10 0 tr 0.0 000000 1019.0 0.0 0.0 1.0 11 8 09 13 02 97 2.5 93 4.0 1.1 0.2 3.4 3.4 4.6 6.0 6.6 8.9 10 0 0.0 0.0 000000 1018.0 0.0 0.0 1.1 12 8 08 09 02 97 4.0 96 5.5 2.5 1.7 3.3 3.8 4.7 5.9 6.5 8.6 10 0 0.5 0.0 000000 1015.5 1.0 0.0 0.0 13 8 04 05 10 95 5.5 96 7.2 2.9 2.5 5.2 4.9 5.3 6.0 6.4 8.4 10 0 3.2 0.0 000000 1018.5 1.6 0.0 0.1 14 8 07 02 10 94 7.2 98 7.4 5.3 4.9 6.4 6.0 6.1 6.5 6.5 8.3 10 0 9.4 0.1 000000 1016.5 12.5 0.0 0.5 15 8 35 02 60 96 7.0 93 7.4 6.2 5.5 6.3 6.0 6.2 6.7 6.6 8.2 10 0 2.0 0.0 000000 1002.5 4.2 0.0 0.1 16 8 27 02 02 96 6.1 94 6.5 5.6 5.2 6.2 6.0 6.4 6.9 6.8 8.1 10 0 tr 0.0 000000 1012.0 0.0 0.0 0.6 17 8 03 02 02 97 5.0 94 5.5 4.7 3.7 5.5 5.5 6.3 6.9 6.8 8.2 10 0 0.0 0.0 000000 1022.5 0.0 0.0 0.6 18 8 09 02 03 96 4.0 92 6.6 -1.3 -5.1 3.4 3.3 4.9 6.7 6.7 8.2 10 0 0.0 4.9 000000 1030.0 0.0 3.5 0.8 19 2 10 05 02 96 2.9 93 6.1 1.2 -2.5 2.2 2.2 4.0 5.9 6.2 8.1 10 0 tr 3.7 000000 1027.0 0.0 0.0 0.9 20 8 09 02 03 97 2.9 95 6.6 2.2 -1.5 3.6 3.3 4.2 5.5 5.8 8.0 10 0 2.5 0.0 000000 1017.0 3.4 0.0 0.1 21 8 22 02 44 09 6.6 98 11.3 2.8 2.4 5.6 5.1 5.3 5.8 6.1 7.8 10 0 20.5 0.0 000001 1015.5 14.8 0.0 0.2 22 8 25 05 02 96 11.0 96 12.5 6.6 6.2 8.4 7.8 7.1 6.5 6.3 7.6 20 0 0.2 1.2 000000 1002.5 0.4 0.0 0.4 23 8 14 02 02 94 10.1 97 12.3 9.1 6.3 8.2 7.7 7.5 7.3 6.9 7.8 10 0 1.7 0.0 000000 1007.0 2.3 0.0 0.5 24 7 20 09 02 07 12.3 91 13.6 10.1 6.8 9.3 8.8 8.3 7.9 7.4 7.9 10 0 1.4 1.4 000000 1000.5 0.9 0.0 0.5 25 1 15 02 11 09 7.7 96 11.4 7.7 2.6 7.9 8.0 8.4 8.4 7.8 8.1 10 0 5.5 0.2 000001 1007.5 2.8 0.0 0.5 26 7 19 09 02 97 10.4 92 12.4 7.7 2.8 8.9 8.7 8.7 8.5 8.0 8.3 10 0 8.0 0.9 000000 993.5 7.3 0.0 0.6 27 4 18 05 02 97 10.8 92 12.0 9.7 6.5 9.0 9.0 9.1 8.8 8.3 8.4 10 0 0.1 0.0 000000 987.5 0.1 0.0 0.5 28 7 23 02 02 97 8.4 93 10.6 6.3 2.0 7.7 7.6 8.1 8.6 8.4 8.6 10 0 11.4 3.6 000000 998.5 4.7 0.0 0.9 29 8 14 05 63 94 8.5 98 12.6 4.8 -0.4 6.7 7.0 7.3 8.1 8.2 8.7 20 0 5.7 0.0 000000 998.5 4.7 0.0 0.4 30 8 20 02 02 95 11.1 96 11.1 8.5 7.7 9.4 9.2 9.0 8.5 8.2 8.7 10 0 22.9 0.0 000000 997.0 12.8 0.0 0.3 31 8 03 05 60 96 4.5 92 8.0 4.5 4.0 5.6 6.5 7.5 8.1 8.2 8.8 10 0 11.2 0.0 000000 1001.5 5.7 0.0 0.7 Monthly means 6.9 93 8.7 5.0 2.8 6.5 6.2 6.7 7.4 7.5 8.7 1011.0 Monthly totals 114.0 32.4 91.1 3.5 19.9 Highest values 12.3 13.6 10.1 7.7 9.9 9.4 9.1 8.9 9.1 10.0 22.9 6.2 14.8 3.5 1.7 Lowest values 1.7 81 3.3 -1.3 -5.1 2.2 2.2 4.0 5.5 5.8 7.6 1971-2000 monthly climatological averages 90 8.3 2.6 0.4 4.6 4.8 5.7 6.3 6.7 8.1 65.6 40.9 1015.2 59.2 61.4 21.1 Number of days with 2002 normal Snow/sleet falling 0 1.7 50% snow cover 09GMT 0 1.0 Hail or ice pellets 0 0.3 Thunder 0 0.2 Gale 0 0.2 Fog at 09GMT 2 1.9 Air frost 1 7.9 Ground frost 5 15.3 0.2mm precipitation 21 15.1 1.0mm precipitation 17 11.2 5.0mm precipitation 8 4.9 No sunshine 17 14.7 A cloudy and dull month, with frequent rain making it also very wet. Mild during and after Christmas, with cloudy conditions leading to warm nights and little frost. Key DD: date 07GMT observations N cloud cover (oktas, 9=obscured) dd wind direction (degrees/10) ff wind speed (knots) ww present weather code 1 cloud decreasing 21 recent rain 2 sky not changing 44 fog 3 cloud increasing 60 intermittent slight rain 10 mist 61 continuous slight rain 11 shallow fog patches 63 continuous moderate rain 20 recent drizzle VV visibility (00-50 metres/100, 94 very poor, 95 poor, 96 moderate, 97 good) Soil temperatures are for 0700GMT beneath bare soil (5, 10, 20cm) or grass (30, 50, 100cm) 09GMT observations Temp temperature (degC) RH relative humidity (%) E state of ground (10 moist, 20 wet, 40 frozen, X5 snow) SS snow depth (cm) Press air pressure (mb) 24 hour readings Max maximum temperature (degC) beginning 09GMT Min minimum temperature (degC) ending 09GMT Gmin grass minimum temperature (degC) ending 09GMT Rain precipitation beginning 09GMT Sun sunshine (hours) sunrise-sunset Rain hrs hours of rainfall (>0.1mm/h) 09-09GMT Fr. Hrs hours of air frost (00-24GMT) Pch Evap Piche evaporation (ml) beginning 09GMT Days with S snow(5) or sleet(1) falling L 50% snow cover at 09GMT H hail or ice pellets T thunder heard G gale F fog at 09GMTReturn to top of document
MAIDENHEAD METEOROLOGICAL OBSERVATIONS FOR 2002 2002 Climat. Notes Normal Air temperature (degC) Mean maximum 15.5 14.7 Highest since 1999 Mean minimum 7.8 6.7 Highest on record Mean 11.7 10.7 Warmest year on record Highest maximum 31.1 30.0 Lowest maximum 1.4 0.0 Highest minimum 18.4 18.0 Lowest minimum -8.1 -7.1 No. of days with minimum below -5C 2 No. of days with maximum 25C or more 19 No. of days with maximum below 0C 0 No. of days with minimum 15C or more 22 Grass temperature (degC) Lowest minimum -8.9 -10.9 Mean grass minimum 5.5 Highest on record Soil temperature (degC) 5cm mean 10.2 9.3 Equal highest on record 10cm mean 10.3 9.7 Cooler than in several recent years 20cm mean 11.3 10.6 Cooler than in 1995, 1990 and 1989 30cm mean 11.8 11.0 Cooler than in several recent years 50cm mean 11.6 10.8 Cooler than in 1995 100cm mean 11.6 10.9 Cooler than in 1995, 1990 and 1989 5cm maximum 20.2 5cm minimum -2.5 Lowest since before 1989 10cm maximum 20.4 10cm minimm -2.0 Lowest since before 1989 20cm maximum 20.7 20cm minimm 0.4 Lowest since 1997 30cm maximum 20.3 30cm minimum 2.2 Lowest since 1997 50cm maximum 19.5 50cm minimum 2.6 Lowest since 1997 100cm maximum 17.4 100cm minimum 5.0 Lowest since 1997 Sunshine (hr) Mean daily sunshine amount 4.15 3.96 April was the sunniest month Total sunshine 1514.2 1446.8 Maximum daily sunshine 14.6 14.7 Number of sunless days 73 75.1 Highest since 1996 No. of days with over 12h 11 Precipitation (mm) Total fall 832.3 653.1 Second wettest (after 2000) since 1958 Highest daily total 23.6 34.2 Lowest since 1990 No. of days with 0.2mm or more 181 155 Most since before 1984 No. of days with 1.0mm or more 143 143 Most since before 1984 No. of days with 5.0mm or more 63 43.2 Number of days with Snow or sleet falling 1 11.2 Lowest total since before 1937 50% snow cover on round at 0900GMT 0 4.7 Last year with 0 was in 1998 Hail or ice pellets falling 5 4.5 Thunder heard 10 12.0 Lowest total since 1996 Fog at 0900GMT 13 14.0 Highest total since 1997 Air frost 15 41.1 Lowest total since before 1953 Ground frost 59 92.4 Lowest total since before 1953 Gale 0 1.9 Air pressure Mean at 0900GMT 1014.3 1016.0 Highest 1041.5 Lowest 968.5 Miscellaneous Mean relative humidity at 0900GMT 82 Number of hours with rain 640.9 545.9 Most since 2000 Number of hours with air frost 98.2 319.8 Lowest total since before 1985 Most hours of rain in a day 15.8 Mean cloud cover at 0700GMT (eighths) 5.7 Mean wind speed at 0700GMT (knots) 4.7 Total piche evaporation (ml) 537.8 576.5 Greatest daily evaporation (ml) 4.6Return to top of document