Hi all,

8mm of water has fallen in the last 5 minutes (visibility reduced
to 800m but almost 'nil' at ground level due to the most amazing
spray/bouncing water resulting from this cloudburst). No thunder.

SYNOP 011515Z (Special)
03/// 41308 71010 10177 20162 40190 5//// 782// 873//
333 81706 87918 91022=

METAR (SPECI)
EG// 011515Z 10010G22KT 0800 +SHRA FEW006 BKN018CB
18/16 Q//// AMB=

details of rainfall, etc on the hour.

Nigel (Romsey, Hampshire).

"Nigel Paice" wrote in message
...
Hi all,

8mm of water has fallen in the last 5 minutes (visibility reduced
to 800m but almost 'nil' at ground level due to the most amazing
spray/bouncing water resulting from this cloudburst). No thunder.
Nigel (Romsey, Hampshire).

A colossal 22.6mm of rain has now dropped into my rain gauge of
which 11.5mm fell in the 8 minute spell 1510-1518Z. The intensity
of this deluge has eased to heavy! The previous highest daily fall of
the year of 22.0mm on 29 March has already been exceeded in the
last 40 minutes! Localised flooding reported but no details yet.
At 1450Z, the cloud to the southeast looked to have little rain falling
out of it as the sky was clearly visible behind it, but quite quickly this
view was screened off by the sudden rain shafts, almost having the
appearance of a microburst.

SYNOP 01/1550Z
03/// 41325 71503 10170 20161 40195 53010 78182 879//
333 82706 87918=

METAR
EG// 011550Z 15003KT 2500 +SHRA FEW006 BKN018CB
17/16 Q//// RESHRA YLO1=

Details:
wind... SE by S, force 1 (was ENE force 3 to 4 prior to downpour).
visibility... 2500m (min vis 800m).
weather... heavy rain shower (violent for 8 minutes).
clouds... ST fractus at 600ft under CB base 1800ft.
dry bulb... +17.0C.
dewpoint... +16.1C.
RH... 94%.
sea level pressure... 1019.5mb.
rainfall last hour... 22.6mm (that's also the total since 0900Z).

beaufort letters (1450-1550Z)... cjpu,cpro,cpR2f,cpR.

Nigel (Romsey, Hampshire).

"Nigel Paice" wrote in message
...

A colossal 22.6mm of rain has now dropped into my rain gauge of
which 11.5mm fell in the 8 minute spell 1510-1518Z. The intensity
of this deluge has eased to heavy! The previous highest daily fall of
the year of 22.0mm on 29 March has already been exceeded in the
last 40 minutes! Localised flooding reported but no details yet.
At 1450Z, the cloud to the southeast looked to have little rain falling
out of it as the sky was clearly visible behind it, but quite quickly this
view was screened off by the sudden rain shafts, almost having the
appearance of a microburst.

Update at 1630Z:
Rainfall total for today so far in Romsey has increased to 24.4mm but
thankfully, the shower is currently slight and showing signs of stopping.
Water is no longer cascading like waterfalls off rooves and guttering.

Nigel (Romsey, Hampshire).

Despite rain on and off, nothing quite like that down the road in
Southampton - must have been very localised. Didn't notice the cloud as
I face south where I'm working.

Nick