|Convective Outlook: Mon 10 Feb 2020|
|What do these risk levels mean?|
VALID 06:00 UTC Mon 10 Feb 2020 - 05:59 UTC Tue 11 Feb 2020
ISSUED 21:46 UTC Sun 09 Feb 2020br> br>
ISSUED BY: Dan
Strong west-northwesterly flow covers the British Isles throughout Monday, advecting markedly cold air from Arctic Canada across the Atlantic. This will create an environment with very steep mid-level lapse rates, especially from Monday evening onwards as the real cold air aloft arrives, yielding 300-600 J/kg CAPE in response to SSTs. As such, numerous showers will develop over open waters and plough inland on strong steering winds, merging to give longer spells of rain (and snow) at times as organised troughs and occlusions swing through in the flow.