Ships: 1 ship observed the developing phase
FUS: Lear Jet and US-C130 (flight A514) investigated the low and its trailing cold front in the early stage (objective targets)
NUS: US-C130 (and GOES Rapid scans) observed the developing phase
MSA: 4 aircraft survey studied the mature phase. UK-C130 & Electra observed the warm front. UK-C130 & P3 investigated the cyclone centre. G-IV investigated the region south of the cyclone centre.
Soundings: Upstream North America and 3hourly ozone soundings from Valentia and Aberystwyth
2nd warm front not particularly represented in dropsonde data: probably an error in model
Only small forecast errors. The forecast of the low centre location and the intensity of the system was quite accurate, with position error around 150 km (36h forecast).