Storm Forecast Issued: 2010-09-10 00:43:00
Valid: 2010-09-10 00:00:00 - 2010-09-10 23:59:00
Regions Affected
Northern Ireland, SW Scotland and N + W Ireland ( Ireland, Northern Ireland and S + W Scotland are included in the WATCH )
Synopsis
A large and complex area of Low pressure over Iceland dominates the weather across the United Kingdom on Friday.
A large area of showers are expected to move over parts of Ireland and Northern Ireland during the evening and night-time hours, moving NE into SW Scotland around midnight (and hence the end of the forecast period). The showers are associated with the remnants of ex-Hurricane Earl, and thus are accompanied by a rather warm and unstable airmass.
Given favourable cloud heights, there is a reasonable chance for a few thunderstorms amongst this large cluster of showers, even after sunset since the lapse rates will be quite steep.
Given the airmass, hail is possible in some of the showers, and may be locally moderate in size (up to 3cm in diameter).