The Met Office has issued this weather warning for storm conditions on Thursday.
Warning in place from midnight on Wednesday 31 July until midnight on Thursday 1 August
The Met Office reports that whilst there is some uncertainty, thunderstorms may affect southeast England during the early hours of Thursday, perhaps also extending into parts of East Anglia. Where these occur, rain accumulations of 25-40 mm are possible in 1 hour, with a small risk of over 60mm in 2-3 hours, and accompanied by frequent lightning at times.
Elsewhere, an area of showery rain is likely to develop and move northeastwards across parts of Wales, the Midlands and northern England. This will be heavy and perhaps thundery at times, persisting through Thursday morning before easing towards midday. Some areas could receive rain accumulations of 25-50 mm over the course of a few hours.
Scattered heavy showers and thunderstorms are then expected to develop through Thursday afternoon and evening across parts of central, southern and eastern England, and perhaps also south Wales. These have the potential to produce 50 mm or more in 1-2 hours, along with gusty winds, large hail, and the risk of surface water flooding.