Between 06:00 Thu 6th and 02:00 Fri 7th
Isolated thunderstorms are likely to develop across parts of England and Wales from early Thursday morning before clearing by early Friday. While these storms may miss many places, where they do develop intense downpours are likely, bringing the threat of sudden flooding of roads, transport routes, homes and businesses. Lightning and hail may be additional hazards.
Chief Forecaster’s assessment
Two waves of thunderstorms are expected to affect the UK on Thursday. The first wave is expected to develop over southern England early on Thursday and push northwards across parts of the Midlands and East Anglia, clearing later in the morning or during the afternoon. The second wave is expected to develop further north, most likely over parts of northern England and the Midlands during the afternoon before moving eastwards and clearing during the evening or early hours of Friday. 20 to 30 mm of rain may fall within an hour and perhaps 50 to 80 mm in 2 or 3 hours, these totals most likely associated with the second wave of storms. However, such totals are likely to be very localised with many places staying dry.