|Convective Outlook: Thu 16 May 2019|
|What do these risk levels mean?|
VALID 06:00 UTC Thu 16 May 2019 - 05:59 UTC Fri 17 May 2019
ISSUED 21:01 UTC Wed 15 May 2019br> br>
ISSUED BY: Dan
Heights will gradually fall over the British Isles, both from the west and from the east, with a small upper low drifting from the North Sea across Orkney late in the day. Cooling aloft coupled with surface heating and orographic forcing may allow a few scattered showers to develop over NW Ireland and W Scotland, primarily late afternoon into the evening hours. Instability and shear is rather weak, and so lightning is likely to be fairly isolated.