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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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A fair morning. We've managed to avoid the showers until a
moderate to heavy one dispensed 1.9mm in a 5 minute burst ending at 1305Z. This was very localised but we caught the middle of it, dropping the air temperature by 3 degrees from which it has never recovered. Now we seem to be on the southern edge of a larger, more potent beast chucking out lightning while the sun attempts to pop out from the overhanging cloud. Thunder was first audible at 1418Z well away to the west. The storm is now centred about 4 miles to our WNW and moving at a crawl. A prolonged, slight rain shower 1400-1432Z. SYNOP 07/1450Z (current ob) 03/// 41457 52005 10146 20079 40153 52007 71781 85900 333 81818 83925= METAR EG// 071450Z 20005KT 7000 TS FEW018 SCT025CB SCT035TCU 15/08 Q//// WHT= Details: wind... SSW, force 2, steadily backing from SW. visibilty ... 7km, but 40km away from W-NW. weather... partly cloudy with thunderstorm and no rain. clouds... 1/8 Cu fra 1800ft, 3/8 Cb 2500ft, 3/8 Cu 3500ft. dry bulb... +14.6C. dew point... +7.9C. RH... 64%. sea level pressure... 1015.3hPa (rising slowly). rainfall last hour... 0.2mm. 6 hour rainfall (1350-1450Z)... 2.1mm. beaufort letters (1350-1450Z)... bcjp,cpro,bcpro,bctloro, bctlo. Nigel (Romsey, Hampshire) 40m amsl |
#2
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The storm took its sweet time to pass by to the north with
thunder heard for over 1 hour, finally going quiet by 1540Z, only just declaring the storm ceased by the ob. An outbreak of moderate rain fell 1535-1540Z. Rainbow visible. SYNOP 07/1450Z 03/// 41457 52005 10146 20079 40153 52007 71781 85900 333 81818 83925= -------------------------------------------------------- SYNOP 07/1550Z (current ob) 03/// 41462 52503 10136 20088 40161 53013 72999 85900 333 81818 82925 83832 93207 99010= METAR EG// 071550Z 25003KT 9999 VCSH FEW018 FEW025CB SCT032TCU 14/09 Q//// RETS RERA BLU= Details: wind... WSW, force 1 (gust 18kt near storm). visibilty ... 12km, but 40km away from NNE. weather... partly cloudy with adjacent shower (recent thunder- storm, moderate rain and slight hail). clouds... 1/8 Cu fra 1800ft, 2/8 Cb 2500ft, 3/8 TCu 3200ft, 2/8 Sc 6000ft. dry bulb... +13.6C. dew point... +8.8C. RH... 73%. sea level pressure... 1016.1hPa (rising more quickly). rainfall last hour... 0.9mm. 7 hour rainfall (0850-1550Z)... 3.0mm. beaufort letters (1350-1450Z)... bcjp,cpro,bcpro,bctloro,bctlo. beaufort letters (1450-1550Z)... bctlo,ctlro,ctloho,ctlo,ctlor,bcjp. Nigel (Romsey, Hampshire) 40m amsl |
#3
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Brief sprinkles of rain in the sunshine have maintained a
rainbow for a large chunk of the last hour. The sky looks 'tidy' to the south with blue sky and small to medium sized Cu while the northern aspect is quite messy with Cb debris. There's one active Cb dishing out the odd boom of thunder in the distance, about 8 to 10 miles off. Thunder heard at 1645Z and 1650Z. SYNOP 07/1450Z 03/// 41457 52005 10146 20079 40153 52007 71781 85900 333 81818 83925= -------------------------------------------------------- SYNOP 07/1550Z 03/// 41462 52503 10136 20088 40161 53013 72999 85900 333 81818 82925 83832 93207 99010= -------------------------------------------------------- SYNOP 07/1650Z (current ob) 03/// 41465 52305 10138 20090 40159 50009 71781 84963 333 81818 81925 83830 99010= METAR EG// 071650Z 23005KT 9999 TS FEW018 FEW025CB SCT030 14/09 Q//// BLU= Details: wind... SW, force 2. visibilty ... 15km, but 30-40km away from NW. weather... partly cloudy with distant thunderstorm. clouds... 1/8 Cu fra 1800ft, 2/8 Cb 2500ft, 3/8 Cu 3000ft, 2/8 Sc 6000ft, 1/8 Ac 10000ft, 1/8 Ci 22000ft. dry bulb... +13.8C. dew point... +9.0C. RH... 73%. sea level pressure... 1015.9hPa (was rising, now falling). rainfall last hour... trace. 8 hour rainfall (0850-1650Z)... 3.0mm. beaufort letters (1350-1450Z)... bcjp,cpro,bcpro,bctloro,bctlo. beaufort letters (1450-1550Z)... bctlo,ctlro,ctloho,ctlo,ctlor,bcjp. beaufort letters (1550-1650Z)... bcjp,bcpro,bcjp,bcpro,bctlo. Nigel (Romsey, Hampshire) 40m amsl |
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