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Old October 15th 11, 10:40 AM posted to uk.sci.weather
Freddie Freddie is offline
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First recorded activity by Weather-Banter: Aug 2011
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Default Mesoscale cloud signature moving down Eng Channel

On Sat, 15 Oct 2011 01:15:31 -0700 (PDT), Dick
wrote:
The cloud was the result of an upper low/cold pool which was


I presume the pva associated with this upper feature locally deepened
the underlying boundary layer such that convection was possible in a
limited area.

--
Freddie
Bayston Hill
Shropshire
102m AMSL
http://www.hosiene.co.uk/weather/cumulus/