Thursday, 12 October 2006
BRACKNELL (TAWFIELD)
0900 WSW F2 25km - 7/CI T107D096
RMK: [CAVOK, COTRA] - 7Ci/COTRA~280+. Although shown as a single layer,
in reality I suspect at least two layers (clearly evident at sunrise),
and the lower-based cloud is highly sheared, with floccus and uncinus
elements present.
[ OVERNIGHT DATA (18Z - 09Z):
screen min: 08.3 grass min: 06.2 precipitation: 1.2 [24hr total: 15.4
mm]
other data: yesterday evening's rain ceased by 1845Z. ]=

--
Bracknell (Wooden Hill/Tawfield), Berkshire, UK
NGR: SU 854 667 Elev: 80m
Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W

Thursday, 12 October 2006
BRACKNELL (TAWFIELD)
0900 WSW F2 25km - 7/CI T107D096
RMK: [CAVOK, COTRA] - 7Ci/COTRA~280+. Although shown as a single layer,
in reality I suspect at least two layers (clearly evident at sunrise),
and the lower-based cloud is highly sheared, with floccus and uncinus
elements present.
[ OVERNIGHT DATA (18Z - 09Z):
screen min: 08.3 grass min: 06.2 precipitation: 1.2 [24hr total: 15.4
mm]
other data: yesterday evening's rain ceased by 1845Z. ]=

1800 SW F1 25km - 1/SC 7/CI T142D103
RMK: 1Sc (distant)~040, 7Ci~280+. A fine day with large amounts of
cirriform cloud.
[ DAYTIME DATA (09Z - 18Z):
screen max: 17.0 precipitation: NIL
other data: Theoretical local fog point ~9.5, with theoretical local air
min ~ 7 or 8, though some doubt about wind regime towards end of
night. ]=

--
Bracknell (Wooden Hill/Tawfield), Berkshire, UK
NGR: SU 854 667 Elev: 80m
Lat: 51° 23' 30'' N: Long: 00° 46' 28'' W

"Martin Rowley" m wrote
Thursday, 12 October 2006
BRACKNELL (TAWFIELD)
other data: Theoretical local fog point ~9.5, with theoretical local
air min ~ 7 or 8, though some doubt about wind regime towards end of
night. ]=

.... in the end, we only *just* achieved the screen min of 9.5°C (some
thin SC about late in night), though as we are somewhat warmer than the
open country round-about, the fact that the visibility in the (country)
distance is close to aviation fog limits (1lm) is not surprising. A
heavy overnight dew deposit though, with a measured 'trace' in gauge.

Martin.