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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
December 31st 04, 07:12 AM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 0700 WSW F4 4500 -DZ 3/ST 8/SC T101D078 RMK: NIL= Notes: The basic first-line format is:- [Time/GMT] [Wind direction .. compass points] [Wind speed .. Beaufort force] [Visibility .. metres / 9999 = 10km] [Weather groups .. if any] [Cloud layers .. amount/type] [Screen temperature/T .. degrees/tenths] [Dewpoint temp/D .. degrees/tenths] -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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#2
December 31st 04, 09:07 AM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 0700 WSW F4 4500 -DZ 3/ST 8/SC T101D078 RMK: NIL= BRACKNELL (TF) 0900 SW F4 8000 -RA 7/ST 8/SC T101D092 RMK: Precipitation (slight rain/-RA) just into that category - for most of past couple of hours, drizzle the dominant PPN type. Cloud bases ST ~ 1000ft, and SC ~ 1800ft. [ OVERNIGHT DATA (18Z - 09Z): screen min: 08.5 grass min: 06.8 precipitation: 0.2 ] After note just prior to pressing the button .... at 0905Z, SC showing breaks and sky has become much brighter last couple of minutes - odd spots of rain. = -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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#3
December 31st 04, 10:00 AM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 0700 WSW F4 4500 -DZ 3/ST 8/SC T101D078 RMK: NIL= BRACKNELL (TF) 0900 SW F4 8000 -RA 7/ST 8/SC T101D092 RMK: Precipitation (slight rain/-RA) just into that category - for most of past couple of hours, drizzle the dominant PPN type. Cloud bases ST ~ 1000ft, and SC ~ 1800ft. [ OVERNIGHT DATA (18Z - 09Z): screen min: 08.5 grass min: 06.8 precipitation: 0.2 ] BRACKNELL (TF) 1000 WSW F4 20km - 4/CU 5/SC //CI T101D092 RMK: Just confirming dramatic change noted above - within 10 minutes of that ob (i.e. by 0910Z), virtually all low cloud dispersed, leaving very thin Ac fragments and no more than 5 oktas cirrus (CI .. mix of Ci unc & spi); cloud re-built to current cumulus fractus/humilis, with very thin Sc around 6000ft and cirrus above. Vis shot up to at least 20K .. could be more, as rain ceased by 0915Z: however note that T/D unchanged! The surface cold front appears to be way back across the Midlands, so suspect some sort of upper feature clearing overhead.= -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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#4
December 31st 04, 12:07 PM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 0700 WSW F4 4500 -DZ 3/ST 8/SC T101D078 RMK: NIL= BRACKNELL (TF) 0900 SW F4 8000 -RA 7/ST 8/SC T101D092 RMK: Precipitation (slight rain/-RA) just into that category - for most of past couple of hours, drizzle the dominant PPN type. Cloud bases ST ~ 1000ft, and SC ~ 1800ft. [ OVERNIGHT DATA (18Z - 09Z): screen min: 08.5 grass min: 06.8 precipitation: 0.2 ] BRACKNELL (TF) 1000 WSW F4 20km - 4/CU 5/SC //CI T101D092 RMK: Just confirming dramatic change noted above - within 10 minutes of that ob (i.e. by 0910Z), virtually all low cloud dispersed, leaving very thin Ac fragments and no more than 5 oktas cirrus (CI .. mix of Ci unc & spi); cloud re-built to current cumulus fractus/humilis, with very thin Sc around 6000ft and cirrus above. Vis shot up to at least 20K .. could be more, as rain ceased by 0915Z: however note that T/D unchanged! The surface cold front appears to be way back across the Midlands, so suspect some sort of upper feature clearing overhead.= BRACKNELL (TF) 1200 WSW F4 25km - 2/CU 6/SC T112D082 RMK: Fine/strong sunshine occasionally coming through: total cover 6 oktas - the SC is thin/well-broken, the Cu in immediate vicinity is shallow (Cu hum/fra), but there is a line of Cu mediocris to the distant north.= -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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#5
December 31st 04, 01:26 PM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 1200 WSW F4 25km - 2/CU 6/SC T112D082 RMK: Fine/strong sunshine occasionally coming through: total cover 6 oktas - the SC is thin/well-broken, the Cu in immediate vicinity is shallow (Cu hum/fra), but there is a line of Cu mediocris to the distant north.= BRACKNELL (TF) 1320 W F3 35km - 5/CU T115D076 RMK: Cumulus now has good (if limited) development - dew point continues to drop, so we must be well behind the surface cold front - vis. well up: cloud movement from the NW.= -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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#6
December 31st 04, 06:03 PM
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[OBS] Bracknell(TF) Fri 31 DEC 2004
Friday, 31 December 2004
BRACKNELL (TF) 0700 WSW F4 4500 -DZ 3/ST 8/SC T101D078 RMK: NIL= BRACKNELL (TF) 0900 SW F4 8000 -RA 7/ST 8/SC T101D092 RMK: Precipitation (slight rain/-RA) just into that category - for most of past couple of hours, drizzle the dominant PPN type. Cloud bases ST ~ 1000ft, and SC ~ 1800ft. [ OVERNIGHT DATA (18Z - 09Z): screen min: 08.5 grass min: 06.8 precipitation: 0.2 ] BRACKNELL (TF) 1000 WSW F4 20km - 4/CU 5/SC //CI T101D092 RMK: Just confirming dramatic change noted above - within 10 minutes of that ob (i.e. by 0910Z), virtually all low cloud dispersed, leaving very thin Ac fragments and no more than 5 oktas cirrus (CI .. mix of Ci unc & spi); cloud re-built to current cumulus fractus/humilis, with very thin Sc around 6000ft and cirrus above. Vis shot up to at least 20K .. could be more, as rain ceased by 0915Z: however note that T/D unchanged! The surface cold front appears to be way back across the Midlands, so suspect some sort of upper feature clearing overhead.= BRACKNELL (TF) 1200 WSW F4 25km - 2/CU 6/SC T112D082 RMK: Fine/strong sunshine occasionally coming through: total cover 6 oktas - the SC is thin/well-broken, the Cu in immediate vicinity is shallow (Cu hum/fra), but there is a line of Cu mediocris to the distant north.= BRACKNELL (TF) 1320 W F3 35km - 5/CU T115D076 RMK: Cumulus now has good (if limited) development - dew point continues to drop, so we must be well behind the surface cold front - vis. well up: cloud movement from the NW.= BRACKNELL (TF) 1800 WNW F2 35km - 1/SC 7/SC T086D040 RMK: main Sc deck (with good gaps) around 4000ft, and apparently clear above - stars shining brightly above. Lower Sc in distance to NE. [ DAYTIME DATA (09Z - 18Z): screen max: 11.7 precipitation: tr ]= -- Martin Rowley: data via - http://homepage.ntlworld.com/booty.weather/metindex.htm Bracknell (Wooden Hill/Tawfield), Berkshire NGR: SU 854 667 Elev: 80m Lat: 51DEG23MIN30SEC(N): Long: 00DEG46MIN28SEC(W) |
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