|Convective Outlook: Mon 28 Dec 2020|
|What do these risk levels mean?|
VALID 06:00 UTC Mon 28 Dec 2020 - 05:59 UTC Tue 29 Dec 2020
ISSUED 08:31 UTC Mon 28 Dec 2020br> br>
ISSUED BY: Dan
Large upper trough covers the British Isles on Monday, the cold air aloft atop relatively warm SSTs generating a few hundred J/kg CAPE. Showers and longer spells of precipitation, wintry at times, will rotate around several small-scale areas of low pressure, in a very complex surface pattern - therefore the specific detail will be difficult to predict with more than a few hours lead time. In general, the greatest risk of lightning will be over seas and near coastal areas - with particular attention given to the Channel Islands on Monday morning, where a SLGT has been issued.