Latest temperature (min, max, mean) forecast for CharlestonWV

Recent observations
YYYYMMDD     OBS   Min   Max  Mean
20180412     OBS   2.2  26.7  14.5
20180413     OBS   5.6  30.6  18.1
20180414     OBS  11.1  31.1  21.1
20180415     OBS  12.2  31.1  21.6
20180416     OBS   0.6  23.9  12.2
20180417     OBS   0.0  13.3   6.7
20180418     OBS   0.0  26.1  13.1
20180419     OBS   1.7  26.1  13.9
20180420     OBS  -1.1  15.6   7.2
20180421     OBS  -1.1  22.2  10.6
20180422     OBS  -1.0  22.2  10.6
Latest forecasts
                                  Confidence EnsembleSpread
YYYYMMDD     DAY   Min   Max  Mean Min Max   Min   Max
20180423     000   4.   21.   13.  Lo  Lo    1.3   3.2
20180424     001   5.   23.   14.  Lo  Lo    0.3   0.7
20180425     002   6.   23.   14.  Lo  Lo    0.3   0.4
20180426     003   5.   23.   14.  Lo  Lo    0.6   0.2
20180427     004   4.   21.   13.  Lo  Lo    0.7   0.7
20180428     005   1.   18.   10.  Lo  Lo    1.2   0.7
20180429     006   2.   21.   12.  Lo  Lo    2.8   2.0
20180430     007   3.   22.   12.  Lo  Lo    1.2   1.5
20180501     008   4.   23.   13.  Lo  Lo    1.9   2.6
20180502     009   4.   23.   14.  Lo  Lo    1.3   1.8
20180503     010   6.   24.   15.  Lo  Lo    0.9   1.7
20180504     011   8.   27.   17.  Lo  Lo    1.5   1.8
20180505     012   6.   25.   16.  Lo  Lo    3.1   3.4
20180506     013   4.   23.   14.  Lo  Lo    3.5   3.6
20180507     014   6.   24.   15.  Lo  Lo    3.0   2.9
20180508     015   7.   26.   17.  Lo  Lo    1.5   1.8

-99.9 denotes missing data

For forecasts:

• 'Hi' - denotes that recent forecast errors for the specified forecast length (column 'DAY') have had a standard deviation over the past 30 days of less than 1.5C,
• '- ' - as 'Hi' but in the range 1.5C to 3C.
• 'Lo' - as 'Hi' but greater than 3C.
• The values in the 'Ensemble Spread' columns indicate the standard deviation of the spread of the forecasts between the ensembles. Thus, a value of 1.0 indicates that approximately 2/3rds of the ensemble members lie in the range -1.0C to +1.0C about the mean of the ensemble forecasts.
• The larger the value of the 'Ensemble Spread' the greater the uncertainty of the forecast as the ensemble members have a larger variation for the forecast for the day shown.