Post frontal sharp showers
 

"Waghorn" wrote in message
...

snip
IMO insolation wld not be necessary,convergence and orography being
enough to release potential
instabilty at the surface cold front underneath the overrunning dry
air.The low cloud base and
turbulence of the light to medium showers was striking in SE london
and a low level jet seemed
evident.

.... fair point: without a sounding within that region (and none of those
available seem to be representative), it's difficult to decide on the
exact mechanism for initiation, but I agree that insolation isn't
necessary - it's just that with the poor data I had, it seemed to fit
the bill. The proximity of the Chiltern range must have been a factor.
Something worth extracting out of the model diagnostics for anyone who's
got access to same.

Martin.


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