The Met Office has issued a yellow warning of rain for Britain after weather forecasters predicted a fortnight of average rain to fall over 24 hours.
Heavy rain or thundery showers are likely to affect parts of southeastern England and East Anglia at times on Bank Holiday Monday, the Met Office said. "The main risk periods would seem to be before dawn and again during the middle of the day and into the afternoon," it adds.
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"The evening should see a slow transition to drier conditions from the west.
"The public should be aware of the risk of further localised flooding and impacts on holiday activities."
The Met Office's Chief Forecaster said: "Parts of East Anglia and southeast England will still be affected by a warm, humid and unstable airmass during much of Monday, which leaves the opportunity for thundery downpours to spread from Northern France.
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"As in many such cases, only a minority of places will see the heaviest rain, but there is a chance that some locations could see 20 to 25 mm of rain in an hour and perhaps 40 mm in a few hours."
Senior forecaster Clare Austin told the Independent that the rain would move north into northern and eastern parts of England.
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