|Convective Outlook: Thu 27 Jun 2019|
|What do these risk levels mean?|
VALID 06:00 UTC Thu 27 Jun 2019 - 05:59 UTC Fri 28 Jun 2019
ISSUED 19:57 UTC Wed 26 Jun 2019br> br>
ISSUED BY: Dan
Upper ridge continues to dominate across much of western Europe on Thursday, with an upper vortex continuing to spin over the Atlantic well to the west of Biscay. A corridor of significant CAPE will exist between these two systems (1,500 - 2,000 J/kg), stretching from northern France - Channel Islands - Cornwall - SW Ireland, as hot air between 700-900mb is advected northwestwards beneath cold air aloft and atop a (relatively) cool boundary layer. As a result, there will be a sharp low-level temperature inversion, and also very steep mid-level lapse rates.