Sunday looks like a complete wash out on the latest GFS with very cool temperatures also
Originally Posted by: Taylor1740
A bit pessimistic at least for the SE where there is some warmth and I grant you quite cool in the NW - but it dries up over the next two weeks (the wx summary map)
Jetstream - the loop over the UK dissipates by Wed 23rd, re-establishes briefly wed 30th but otherwise mostly random streaks
GFS - UK remains in a trough between two lumps of HP, well developed over s England Sun 20th but hanging around anyway until Fri 25th when an Atlantic LP appears, giving a W-ly stream at first but as it moves S to be off SW Ireland brings in warm S-lies before drifting off to N Scotland and allowing the Azores High to move back Fri 2nd.
GEFS - for the S temps back to norm by Sat 19th and the mean of runs staying there, even cool around Wed 23rd, but with a lot of variation later on (op reaches 10C above norm at one point and control 8C below!). Big rainfall totals until Tue 22nd rather drier thereafter. For Scotland, the cool spell starts immediately, but rainfall totals much less and mostly 21st - 23rd (Mon - Wed)
ECM - relents after Tue 22nd and places HP over France with mild SW-lies for all but extreme N
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Chichester 12m asl