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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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[RTD: NTL had one of their 'moments' earlier - local loop dropped out
after power failure] Monday, 11 September 2006 BRACKNELL (TAWFIELD) 0900 SSE F3 20km - 2/AC T184D142 RMK: [CAVOK] - 2Ac~120. Sky has a continental, hazy look to it. [ OVERNIGHT DATA (18Z - 09Z): screen min: 12.4 grass min: 09.6 precipitation: NIL [24hr total: 00.0 mm] other data: rather more Ac cas around about a couple of hours ago - one cell quite 'threatening', but dispersed as it moved north. ]= -- Bracknell (Wooden Hill/Tawfield), Berkshire, UK NGR: SU 854 667 Elev: 80m Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W |
#2
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Monday, 11 September 2006
BRACKNELL (TAWFIELD) 0900 SSE F3 20km - 2/AC T184D142 RMK: [CAVOK] - 2Ac~120. Sky has a continental, hazy look to it. [ OVERNIGHT DATA (18Z - 09Z): screen min: 12.4 grass min: 09.6 precipitation: NIL [24hr total: 00.0 mm] other data: rather more Ac cas around about a couple of hours ago - one cell quite 'threatening', but dispersed as it moved north. ]= 1200 SE F3 30km - 2/AC T259D158 RMK: [CAVOK] - 2Ac cas~070/080, 2Ac (thin patches)~100, tr Ci~300. Feels distinctly 'tropical'; the castellatus towers have well-developed vertical structure, and are moving from SSW, so a good amount of directional shear evident (from the surface): double-checked dew point - seemed a bit high, but same value from wet/dry and direct rh dial.= Notes: The basic first-line format is:- [Time/GMT] [Wind direction .. compass points] [Wind speed .. Beaufort force] [Visibility .. metres / (km =10km)] [Visibility .. significant variation/direction] [Weather groups .. if any] [Cloud layers .. amount/type] [Screen temperature/T .. degrees/tenths] [Dewpoint temp/D .. degrees/tenths] [RMK .. additional/plain language information] -- Bracknell (Wooden Hill/Tawfield), Berkshire, UK NGR: SU 854 667 Elev: 80m Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W |
#3
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Monday, 11 September 2006
BRACKNELL (TAWFIELD) 0900 SSE F3 20km - 2/AC T184D142 RMK: [CAVOK] - 2Ac~120. Sky has a continental, hazy look to it. [ OVERNIGHT DATA (18Z - 09Z): screen min: 12.4 grass min: 09.6 precipitation: NIL [24hr total: 00.0 mm] other data: rather more Ac cas around about a couple of hours ago - one cell quite 'threatening', but dispersed as it moved north. ]= 1200 SE F3 30km - 2/AC T259D158 RMK: [CAVOK] - 2Ac cas~070/080, 2Ac (thin patches)~100, tr Ci~300. Feels distinctly 'tropical'; the castellatus towers have well-developed vertical structure, and are moving from SSW, so a good amount of directional shear evident (from the surface): double-checked dew point - seemed a bit high, but same value from wet/dry and direct rh dial.= 1500 SSE F3 30km - 2/AC 6/AC T278D150 RMK: [CAVOK] - 2Ac cas~070, 6Ac~090, total = 6 oktas; base of lower Ac looking dark & 'wet', as if it would produce a few drops if the lower air wasn't so dry. Provisional day max. 28.8°C, which is higher than anything we recorded during August.= -- Bracknell (Wooden Hill/Tawfield), Berkshire, UK NGR: SU 854 667 Elev: 80m Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W |
#4
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Monday, 11 September 2006
BRACKNELL (TAWFIELD) 0900 SSE F3 20km - 2/AC T184D142 RMK: [CAVOK] - 2Ac~120. Sky has a continental, hazy look to it. [ OVERNIGHT DATA (18Z - 09Z): screen min: 12.4 grass min: 09.6 precipitation: NIL [24hr total: 00.0 mm] other data: rather more Ac cas around about a couple of hours ago - one cell quite 'threatening', but dispersed as it moved north. ]= 1200 SE F3 30km - 2/AC T259D158 RMK: [CAVOK] - 2Ac cas~070/080, 2Ac (thin patches)~100, tr Ci~300. Feels distinctly 'tropical'; the castellatus towers have well-developed vertical structure, and are moving from SSW, so a good amount of directional shear evident (from the surface): double-checked dew point - seemed a bit high, but same value from wet/dry and direct rh dial.= 1500 SSE F3 30km - 2/AC 6/AC T278D150 RMK: [CAVOK] - 2Ac cas~070, 6Ac~090, total = 6 oktas; base of lower Ac looking dark & 'wet', as if it would produce a few drops if the lower air wasn't so dry. Provisional day max. 28.8°C, which is higher than anything we recorded during August.= 1800 SSW F3-4 35km - 2/CU 4/CI T231D140 RMK: [COTRA] - 2Cu med (to west/assw humid-plume area)~040, 1Ac~070, 1Ac~120, 4Ci/COTRA~280+ (lower to west/assw humid-plume development); Ac/high-base Sc (both not particularly threatening) increased rapidly in amount from the SSW over past hour, then decreased just as rapidly again - wind perked up a shade, as well as veering from SSE to SSW. [ DAYTIME DATA (09Z - 18Z): screen max: 28.8 precipitation: NIL other data: Warmest day since 26th July (then 31.1°C). ]= -- Bracknell (Wooden Hill/Tawfield), Berkshire, UK NGR: SU 854 667 Elev: 80m Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W |
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