|Convective Outlook: Sat 17 Aug 2019|
|What do these risk levels mean?|
VALID 06:00 UTC Sat 17 Aug 2019 - 05:59 UTC Sun 18 Aug 2019
ISSUED 07:59 UTC Sat 17 Aug 2019br> br>
ISSUED BY: Dan
Broad upper trough covers the British Isles through Saturday, the main upper low centre remaining over the Atlantic to the west of Scotland but with a series of shortwaves rotating counter-clockwise along its southern and eastern flank. The broad cold pool will create an unstable environment with marginally-steep mid-level lapse rates and a couple hundred J/kg CAPE.