Video has been captured of a tornado in the skies above the Duston area close to Northampton. It was spotted at around 12.15pm.
There are reports on social media of damage to nearby houses with roof tiles being blown off and trees damaged as the twister swept through.
The Met Office confirmed that weather conditions in the area suggest it was a tornado.
This video was captured by ITV News viewer Shaun Whitcombe
Tornadoes form as a spiralling column of air descends from the base of a thunderstorm cloud.
It starts as a funnel cloud which can extend all the way to the ground and then becomes a tornado.
Click below to watch a computer animation of the Met Office rainfall radar at the time of the tornado. The brighter colours indicate the heaviest downpours.
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Clearing up is continuing after the flash floods and storms that have swept across the region since Friday.
Among the worst affected was Hemsby on the Norfolk coast.
Click above to view our report
Saturday was the wettest day of June 2014 and brought flash flooding to some parts of Suffolk as storms brought torrential rain.
The highest daily rainfall reading was 23.6 mm in the 24-hours to 10am Sunday at the Brooms Barn Agricultural Station in Higham near Bury St Edmunds, Suffolk.
All of that rain fell in one hour between 3pm and 4pm on Saturday and it represents what is normally nearly a fortnight's worth of rain.
But it was hit-and-miss with the storms and some places in the region escaped with very little rain.
Overall June 2014 in the Anglia region is still drier than average with only two-thirds of the average rainfall falling across the area during the month.
Thunderstorms have brought torrential rain to many parts of Suffolk.
This video by Dionne King was taken in East Street, Sudbury. She reported that 20 homes had been flooded in the area.
Around 20 homes have been flooded after torrential rain brought flash floods to Sudbury in Suffolk.
The area affected was East Street in the town at about 2.30pm on Saturday afternoon.
Suffolk Police said they were aware of flooding incidents across the county.
Eyewitness Vikki Woodford said she saw the tornado touch the ground at Wortwell on the Norfolk-Suffolk border.
Vikki wrote on the ITV News Anglia Facebook page: "I have pictures of it from Wortwell - very clear! We watched it touch down, videoed it then left before the storm was overhead."
She added that it then fizzled out.
There are no reports of any damage.
Thundery downpours have been sweeping across the East Anglia region on Saturday and a possible tornado has been spotted in Stradbroke near Eye in Suffolk.
The picture was taken by ITV Anglia viewer Andy Bevan from his back garden at 2.30pm.
Tornadoes can be spawned from the base of thunderstorm clouds. They start as funnel clouds which can twist all the way down to the ground. They only become tornadoes if they touch the ground.
There is no confirmation that the twister in the picture hit the ground so it may have just been a funnel cloud.
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