Convective Outlook: Wed 26 Apr 2017

LOW SLGT MDT HIGH SVR

What do these risk levels mean?

Convective Outlook

VALID 06:00 UTC Wed 26 Apr 2017 - 05:59 UTC Thu 27 Apr 2017

ISSUED 18:00 UTC Sun 23 Apr 2017

ISSUED BY: Dan

Longwave trough and associated cold airmass by Wednesday will be displaced to the SE, mainly affect just southern and eastern parts of the British Isles. Scattered showers will likely develop more widely through the day in response to diurnal heating, although the coverage (and hence areas affected) will be dependant on how quickly the upper trough clears SE-wards. At this stage, timing differences exist amongst NWP guidance and it is possible the LOW threat area may need adjusting nearer the time.