VALID 06:00 UTC Fri 02 Aug 2019 - 05:59 UTC Sat 03 Aug 2019

ISSUED 19:11 UTC Thu 01 Aug 2019

ISSUED BY: Dan

A weak upper ridge will gradually extend across the British Isles from the west on Friday, but not strong enough to suppress deep convection. Diurnal heating, low-level convergence and orographic forcing will serve to develop a few well-scattered showers, in an environment with up to 500 J/kg CAPE. Weak shear suggests "pulse type" convection is most likely, with convective depth somewhat limited compared with previous days - so any lightning activity per given shower will tend to be quite short-lived and fairly isolated, with moist areas void of lightning. The odd funnel cloud will be possible as low-level vorticity is stretched by shower updrafts.