Convective Outlook: Tue 18 Feb 2020

LOW SLGT MDT HIGH SVR

What do these risk levels mean?

Convective Outlook

VALID 06:00 UTC Tue 18 Feb 2020 - 05:59 UTC Wed 19 Feb 2020

ISSUED 21:32 UTC Mon 17 Feb 2020

ISSUED BY: Dan

Broad upper troughing persists across the British Isles on Tuesday, with a sharpening trough axis sliding southeastwards. Showers, and occasionally more organised bands of showery rain, will affect many areas through Tuesday, easing somewhat overnight as ridging develops from the west. Nonetheless, given steep mid-level lapse rates and 200-500 J/kg CAPE over open waters, a few isolated lightning strikes will be possible - primarily close to northern and western Scotland where instability will be maximised. Since lightning will be more isolated than recent days, no SLGT has been introduced.