Thunderstorms have started to break out over eastern parts of Norfolk, Suffolk and Essex.
The Met Office has a yellow weather alert in force warning of torrential thundery downpours in places with the risk of surface water flooding. There's also the possibility of hail and strong gusts of wind.
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Cloud and rain clearing slowly. Sunshine by Sunday afternoon.
Saturday will be warm with some sunshine but rain will arrive on Sunday and it will feel much cooler
The East of England is the warmest place in Britain today but how's the weather looking this weekend?