|Convective Outlook: Fri 26 May 2017|
|What do these risk levels mean?|
VALID 06:00 UTC Fri 26 May 2017 - 05:59 UTC Sat 27 May 2017
ISSUED 09:12 UTC Fri 26 May 2017br> br>
ISSUED BY: Chris
A large-scale upper trough will approach Ireland from the west during Friday and in combination with a ridge to the east, will help to pull in a moist, unstable airmass from the south. A pre-cold frontal trough is expected to move into western Ireland during the afternoon and in combination with daytime heating and SBCAPE of 500-800j/kg should be enough generate surface based thunderstorms that could quickly become quite electrically active (initiation of thunderstorms in the Irish slight area is expected between 15-16z). Otherwise more isolated embedded thunderstorms may cross Ireland from west to east as the cold front moves through during Friday evening.