"Martin Rowley" wrote in
message ...
AT 1535Z (4.35PM) a very 'flat' looking sky (a complete contrast to
this
time yesterday).

Air temperatu 28.2degC (has been 28.5degC) [NB to Exeter ... this
is
at least 4C below your web site forecast for Bracknell]

Looks like activity is elsewhere (again) so unless we get imports this
evening, another in the long sequence of virtually dry days stretching
back to the 9th July.

.... at 1800Z (7pm)

Air Temp: 27.9degC, Dew Point: 15.2degC.
More cloud than ob above: 1 okta distant Cu mediocris or congestus, 3
oktas Cu humilis, 1 okta Sc Cugen, 3 oktas Ci (very thin).

The TCU above looks as if it might be deep enough for a shower (EGLL
reporting TCU recently), but would depend much on the depth above the
freezing level (circa 11000ft from Herstmonceux), which should produce
an isolated shower - as they seem to be over Slough / Heathrow way,
perhaps fed from the reservoir complex in the vicinity?
Overhead, nothing of note. Also note that on 03882, the environment
curve tends to 'fight' the free/moist air ascent above about 450mbar, so
despite the large amount of CAPE, showers *may* not be too much in
evidence this evening, though even now, it is still too early to rule
them out - local convergence (and town vs. country effects) can work
wonders - just when you've decided to knock them out of the TAF ;-)

Our maximum today was 29.6degC (6C error on web site forecast)... so we
got a little boost (not unusual this time of year) from the obs above.
This means that today (Wednesday) was the warmest day since 8th June
(29.9degC), which latter is still our hottest day of 2004.

Martin.


--
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)