Hi Ron,

My friend in Tavistock (very low down) got 62 mm.

I think it is moisture supply. Ahead of the cold front we have a warm conveyor
bringing warm and moist air northwards in the southwesterly. France and Spain
landmasses tend to cut this off further east (cut off point seems to be
Dorset/East Devon) and the rain fizzles out as it moves east. It all depends on
orientation though, a front coming down from the northwest should give the SE
more rain as the conveyor would have a sea track for longer.

The rainfall was partly orographic, hence my large (but not huge) total and
probably even more on the high plateau of Dartmoor.

I may be wrong :-)

Will.
--

"Ron Button" wrote in message
...
Rather like Keith at Southend ,here in west Essex I got 4.8mm of rain last
night.
So if you ignore (nothing personal) Haytor in the west 91mm, Bracknell
clocked up 17mm ,here 4.8mm and Southend about 40 miles to the East 1.8mm.
What causes such enormous differences across such a comparatively short
distance considering the topography is similar and the rain was not
orographic ?.

RonB


"Martin Rowley" m wrote in
message ...
... total rainfall measured (standard gauge) last night = 17.3mm, with
20.2mm in the 'rain-day' in the 24hr ending 0900GMT this morning. The
night maximum (also the 24hr maximum for the 29th) was 12.6°C.

Now up to 99% of eLTA rainfall for the month, and 104% for the year.

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)