WX temps - the pattern of a steady gradation from cold and well below norm for Iceland to hot and well above norm for the Mediterranean continues for the next 2 weeks. SE England is perhaps a little warmer, N Scotland stays cool. Extra-hot spots in week 2 appear in SW Spain. Romania and near the Caspian. Rain over N Atlantic-facing coasts continues but that over the Alps dies out. NW Europe incl S Britain becoming rather dry, also Ukraine and S Russia.
GFS Op - The pattern of LP generally near Iceland and HP in Biscay continues for the next two weeks, with episodes in which a deeper LP develops and/or troughs affect areas further south e.g. on Tue 20th (just an extended trough), Thu 22nd (985mb Hebrides, incl remains of Ernesto), Sat 24th (locally 985mb Cape Wrath), then a weak circulation until Sun 1st (990mb Rockall). Sat 24th is BH w/e.
ECM - similar to GFS though no clear distinction between Thu 22nd and Sat 24th, and this grouping has a trail oof rather cool N-lies on Mon 26th
GEM - Similar to GFS except that the LP on Sat 24th does not develop and indeed pressure rises over most of Britain at that time, up to 1025mb
GEFS - In the S, mean temp mostly near norm through the remainder of August, but a significant number of runs suggesting something warmer Wed 21st, Sat 24th, and Thu 29th, certainly not the 40C clickbait from some media outlets, and of course cooler in between these dates. Very little rain, a few runs have spikes in w/b Tue 20th. In the N, similar temp pattern though the emphasis is on the cooler periods between the above dates; rain begins around Tue 20th and continues in small amounts in the NE, large amounts in the NW.
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Chichester 12m asl