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Old August 18th 11, 01:19 PM posted to uk.sci.weather
Martin Rowley Martin Rowley is offline
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First recorded activity by Weather-Banter: Jun 2007
Posts: 1,750
Default [ WR ] 18/1215Z AUG 2011 .. West Moors/E.Dorset -RA/RETS+RA

... just to confirm sferics ... a couple of 'mid-level' rumbles;
first one around 09Z was distant and muffled, second around 0913Z
had an initial 'crack' then drifted away to a rumble in the
distance.

Rain since ~02Z, moderate bursts since 05Z, moderate, isolated
heavy, since 0730Z ... total rainfall 9 mm.


... (1050Z): just come back from the shops / drowned rat comes to
mind ... 34 mm since early hours, with the bulk of that coming since
0730Z: local traffic reports suggest many roads flooded and the
local roads here are having trouble getting rid of water - not
helped by tree debris blocking the drains!


.... (1215Z): PPN now light, with sky brightening up from SW/W, but
until 1150Z, extended periods heavy rain, amongst continuous moderate
PPN which had set in around 0730Z. Thunder was infrequent much of the
time (roughly 30 min intervals), but 1125-1145Z, discharges (still
CC/IC .. only vague lightning visible within cloud on occasion) were
coming roughly every 2 to 5 mins.

Total rainfall (5" gauge BUT *non-standard* exposure) 0900-1200 (3hr)
= 44.8 mm
Total rainfall whole event (so far/i.e. since about 0200Z) = 50.8 mm

This will easily be our highest 24hr (standard and 'any-period') total
since we moved here in summer 2007.

Lots of local news reports of problems in Poole and Bournemouth.

Martin.



--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N Long: 01.88W
NGR: SU 082 023