The Environment Agency is urging people along the south coast of England between Dorset and Kent, to be vigilant and prepared for the risk of flash flooding.
A line of thunderstorms is expected to bring 15-25mm of rain in an hour in some places, with the potential for up to 50mm (a month’s worth of rain) in just a few hours.
There is also a risk of flooding from rising groundwater across parts of Wiltshire, Somerset and West Dorset, including Salisbury Plain.
More top news
Wednesday night's weather for the east of the region
Wednesday night's weather for the west of the region
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