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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Dry this evening with late sunshine, but turning chilly overnight
Temperatures are set to rise from the weekend, with high pressure in charge, with some places seeing the low 30's next week.