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
Simon's Blog - Stormy Weather
It's that time of year again... Shrove Tuesday is nearly here and many of us are getting ready to cook up a batch of pancakes.
Monday night's weather for the east of the region