The heatwave has erupted into a string of thunderstorms across the Anglia region. Here is a selection of pictures from ITV Anglia viewers.
The week-long July heatwave in the Anglia region was ended with thunderstorms and torrential rain on Sunday.
The region has been mopping up after spectacular storms hit some parts on Wednesday night.
The heatwave has triggered a string of thunderstorms across the Anglia region.
One weather station at Somersham in the Cambridgeshire Fens recorded 48 mm of rain in just 7 hours from 2am. The average monthly rainfall for July in the Anglia region is around 50 mm (2 inches)
The storms have brought localised flooding as the rain fell onto hard-baked earth and there has been travel disruption and some power cuts.
The white areas on the rainfall radar chart indicate rainfall rates in excess of 32 mm per hour.
Spectacular lightning storms hit parts of the Anglia region on Wednesday night. The heavy rain caused flooding in Norfolk and firefighters have been pumping out people's gardens.
It also caused another of our summer events to be cancelled - a speedway race meeting in King's Lynn.
A Flood Warning has been issued by the Environment Agency for the North Bank Road alongside the River Nene, east of Peterborough and west of Dog-in-a-Doublet Sluice.
Due to relatively high river flows and rising tides, river levels are likely to affect North Bank Road over tide lock period at approximately 09:30 hrs on Thursday and for some time before and after.
Shortly after spotting one funnel cloud at Red Lodge in Suffolk, ITV Anglia viewer Todd Unsworth saw a second forming beneath a towering cumulonimbus thunderstorm cloud.
The spinning vortex is the start of a tornado but only becomes a tornado if it touches the ground.
Wednesday evening's thunderstorms have spawned some would-be tornadoes in the Anglia region. This video was taken by Todd Unsworth at Red Lodge between Mildenhall and Newmarket in Suffolk at around 6pm.
It shows a funnel cloud developing from the base of a thunderstorm cloud. Only if the twister reaches the ground does it becomes a tornado.
This video was taken by the ITV Anglia skyline camera in Norwich which is used as the live backdrop for Anglia Tonight. It starts with a sequence in real-time and then a shot that has been speeded up 25 times normal speed.