Convective Outlook: Thu 23 Aug 2018 |
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What do these risk levels mean? |
VALID 06:00 UTC Thu 23 Aug 2018 - 05:59 UTC Fri 24 Aug 2018
ISSUED 05:33 UTC Thu 23 Aug 2018
br> br>ISSUED BY: Dan
Upper trough and associated cooling aloft will overspread northern portions of the British Isles during Thursday, steepening lapse rates and generating a few hundred J/kg CAPE. Behind the secondary cold front, numerous showers are likely to develop during the afternoon and evening hours, persisting overnight in areas exposed to the northwesterly wind. Some gusty winds and small hail will be possible with the strongest cores, and while there could be a few lightning strikes rather weak shear and marginal instability suggests that lightning activity will tend to be rather isolated / sporadic and hence difficult to highlight any specific areas with a greater risk.