VALID 06:00 UTC Sat 05 Aug 2017 - 05:59 UTC Sun 06 Aug 2017

ISSUED 21:35 UTC Fri 04 Aug 2017

ISSUED BY: Dan

A marked mid-level shortwave, and accompanying steep mid-level lapse rates, will slide east from Wales across the Midlands to East Anglia through the day, providing the main focus for areas of showers and perhaps some thunderstorms. This complicated somewhat by layered cloud and elements of perhaps some dynamic precipitation which casts some uncertainty over how widespread lightning activity may be. Nonetheless, a broad low-end SLGT has been issued. Some hail to 1.5cm in diameter and gusty winds will be possible with this activity, and perhaps a weak tornado. A little uncertainty as to the exact track of this feature, which might require some slight tweaks to the northern and southern boundary of the SLGT area.