FAX - a continuation of yesterday. HP 1023mb Cornwall blocking the approach of Atlantic LPs, moving off to Poland tomorrow allowing fronts from LP 993mb Faeroes to move south but only as far as N England. Then new mid-Atlantic LP 991mb conspiring with HP 1026mb North Sea to reinstate the blowtorch from the south Tue 11th.
GFS Op 0z - Agrees with FAX; then both the latter LP and HP fade out to be replaced by ridge from Azores High reaching across Britain to the North Sea and staying in place until Mon 17th, any lower pressure well to the east of the Baltic. The Azores High then retreats and the Baltic LP expands so winds go round to the NW until dropping out Fri 21st, maybe (only maybe) some thundery weather working north from France. Pressure rises over Iceland Mon 24th ensuring more dry weather.
No sign of any prolonged rainfall or cooler conditions; any such is shown to be over Russia.
ECM - agrees with GFS
AIFS - London, reaching peaks of 30C tomorrow Sun 9th, 33C Thu 13th and 33C again Fri 21st, with interludes around 25C. Maybe a little rain Sat 15th, and then a little Sat 22nd but it remains a case of 'rain tomorrow, never rain today'. Edinburgh, maxima mostly 20C but with a couple of warmer days Wed/Thu 12/13th at 25C (is that hot in a Scottish context?) and dropping to 15C from Fri 21st. Rain Sun 9th and Fri 21st, perhaps a little at other times.
GEFS - England, the double-peaked heat wave remains on course, in the south up to 5C above norm Mon 10th and 10C above norm Thu 14th but not quite as much in the north, mean temps with good ens agreement. The ens agreement breaks up with the mean back close to norm Tue 18th and declining from there (op and control both cooler members so not matching AIFS). Some runs show some rain from Mon 17th but low confidence in the south, better prospects for Liverpool-Newcastle and presumably northwards.
Scotland, the first peak of England's heat wave scarcely touches norm, then cool before about 6C above norm Wed 13th, a short-lived burst of heat, mean temp then promptly back to norm and staying there, good prospects for rain from Mon 17th onwards.
Originally Posted by: DEW