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Old August 4th 08, 09:24 PM posted to uk.sci.weather
Phil Layton Phil Layton is offline
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First recorded activity by Weather-Banter: Jul 2003
Posts: 3,659
Default [WR] Guildford 4aug08


"Bernard Burton" wrote in message
...
"John Hall" wrote in message
...
In article ,
Phil Layton writes:
04/08/08 5:48Z W 0.9kt SCT005 12.3°C/11.6°C 1010.1mb 0.3mm Tn11.6°C
RMK: RR yesterday 4.6mm from waving front at around 17Z. Tx 20.6c quite
early on at 10z.
Not sure where todays 0.3mm has come from. probably a bird jumping on
the
guage.


I noticed that there was an exceptionally heavy dew for the time of year
this morning. Could that be the explanation?
--
John Hall "George the Third
Ought never to have occurred.
One can only wonder
At so grotesque a blunder." E.C.Bentley (1875-1956)


Yes, John and Phil, the same here in Wokingham, 0.2 mm on the TBR
overnight
and also a steady drip into the TSR between midnight and 04z. I guess that
the relatively warm soil, now wet from yesterday's rain, kept the air near
the ground close to saturation by evaporation, with a steady 4 to 6 knots
at
10 m providing enough mixing to prevent fog. Objects cooled by radiation
immersed in this will collect plenty of condensation.

--

Its possible, although now Ive looked, it recorded at 01Z.
I have always thought that with a tipping bucket mechanism, that it is one
last drop which causes it to register, when in fact the majority of the
drops arrived earlier.. the last of yesterdays rain recorded at 21Z..

Phil