Convective Outlook: Fri 28 Jul 2017
LOW
SLGT
MDT
HIGH
SVR
What do these risk levels mean?
Convective Outlook

VALID 06:00 UTC Fri 28 Jul 2017 - 05:59 UTC Sat 29 Jul 2017

ISSUED 09:02 UTC Fri 28 Jul 2017

ISSUED BY: Dan

Upper vortex to the NW of Scotland on Friday will maintain an unstable environment with numerous scattered showers across Scotland and Northern Ireland, some perhaps weakly-electrified given favourable mid-level lapse rates - lightning most likely over N + W Scotland and parts of Northern Ireland, but the risk in any given location generally not high enough for a SLGT.


Developing frontal system sliding NE across England and Wales in a strongly-sheared environment could have some elements of line convection, but with an overlap of some marginal instability then a few lightning strikes might be possible over north Wales and then northern England late afternoon into the evening - considered a fairly low risk at present.