"Waghorn" wrote in message
...
Hi David,......... as the surface low moved north colder air in
depth pushed east and the PV forcing associated with the trough released
the
potential instability with dramatic consequences.........
Will.
Cheers Will,
Herstmonceux 00Z shows instabilty but vertical development limited by
slightly drier and warmer air
aloft


http://weather.uwyo.edu/cgi-bin/soun...500&STNM=03882

--
regards,
david
(add 17 to waghorne to reply)

Hi David,

It clearly shows too the conditional instability aloft as well as
considerable speed shear in the lowest layers, it's not surprising we had
such vigourous storms.

Joe