Recent sferics in the Lynton area, N Exmoor
Convective Chat Mon 07/05/2012
Posted 07 May 2012 - 19:12
Tornadic activity likely to be rain-wrapped.
Nasty looking LEWPs now developing, and is being strongly forced by PVA. A very promising looking system.
Posted 07 May 2012 - 19:16
Posted 07 May 2012 - 21:37
Am I right in thinking that the longevity of the Oxfordshire storm is further evidence of supercellular characteristics? The way I understand it a mesocyclone creates a positive feedback loop which a)creates classic supercellular structure and b)makes that updraught persistent, therefore giving the storm a much longer lifespan than typical convective pulse type storms. Is this correct, and does the fact that today's storm tracked essentially most of the way across the country support the theory that it was a LT supercell?
Posted 08 May 2012 - 10:57
Model sounding from the inflow regions shows surface winds backed to the SSE, moderately high shear but only weak CAPE with a storm top only around 500 hPa. Nb the small CIN, low LCL and quasi-straight hodograph.
Overall the morphology supports Tony's suggestion this storm may have a 'cycling' aspect to it and it would be interesting to see what kind of track or tracks an SI could find.
This post has been edited by smartie: 08 May 2012 - 11:03
Posted 08 May 2012 - 18:25