Thunderstorms have caused flash flooding, power cuts and travel disruption in parts of the Anglia region.
The storms hits many parts of the East of England on Thursday closing the rail line between Cambridge, Ely and Norwich.
- Click to watch a report on the severe weather and its aftermath by ITV News Anglia's Natalie Gray
Hundreds of pupils were evacuated from a school in Wymondham in Norfolk after a suspected lightning strike.
A downpour at Great Yarmouth racecourse brought 18 mm (0.7 inches) of rain in just over an hour. That is the amount that would normally be expected during a week in July. Racing was delayed by 30 minutes.
UK Power Networks reported 1,000 properties in Norfolk lost power during the storms.
The Harford Manor School in Norwich was closed on Friday as staff were clearing up after flash flooding.
The railway line between Norwich and Cambridge was closed for more than 12 hours after lightning damaged the signalling system between Attleborough and Ely.
The line has re-opened but trains are running at reduced speed with services delayed by up to 15 minutes.
The rainfall radar sequence below shows how the heavy rain and thunderstorms spread northeastwards across the Anglia region during Thursday.
The yellow and green colours indicate the heaviest of the rain.