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13 August 2015, 06:49
Forecasters are warning of heavy, thundery rain across Cambridgeshire and Peterborough.
The yellow weather warning, which is least severe, is in place for Thursday and Friday.
The Met Office say, "A developing area of heavy and thundery rain is expected to reach southern England during the early hours of Thursday before pushing further northwards during the day. There is the potential for torrential downpours in places.
"The public should be aware of a significant risk of localised disruption due to surface water flooding. Lightning and hail are likely to be additional hazards.
"An area of low pressure developing over Biscay pushes into southern UK during early Thursday before tracking further northwards to be centred near or just east of Scotland by Friday afternoon. With very warm air being entrained into the system, locally heavy and thundery rain is expected to develop and affect parts of England and Wales during Thursday. 20 or 30 mm of rain may fall in a relatively short space of time in some places whilst locally in excess of 50 mm is possible in just a few hours."