The Met Office has issued a yellow weather warning for the risk of thundery downpours in the Anglia region on Sunday night into Bank Holiday Monday.
Although many areas will missing the heaviest rain, where the downpours occur there could be localised flooding and frequent lightning may cuase power cuts.
Weather warning valid from noon on Sunday 28 May until 4pm on Monday 29 May 2017
The Met Office chief forecaster says:
"Areas of thunderstorms and rain will move northeastwards across parts of southern England and Wales during Sunday and into Monday.
"These are likely to affect southwest England and Wales on Sunday afternoon before the risk area gradually transfers East and North during Sunday evening and into Monday.
"Whilst torrential rain and thunderstorms could give as much as 30 mm or even possibly 40 mm in an hour in places these are not expected to occur at the same time across the warning area - rather only small areas will be affected at any one time."