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.
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.
Torrential downpours and thunderstorms are currently tracking across Northamptonshire and into Cambridgeshire and Norfolk, heading north east towards The Wash.
Areas on the rainfall radar map coloured white indicate rainfall rates of more than 32 mm per hour.
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One person was killed and at least 16 injured after severe storms hit the central United States.
Rare twin tornadoes slammed the town of Blair north of Omaha in Nebraska, with storm chasers reporting several tornado touchdowns in the area.
Dozens of flights were cancelled due to the weather that produced strong winds and cricket ball-sized hail.
An oil worker has filmed amazing up-close footage of the moment a tornado tore into an oil workers' encampment in North Dakota.Read the full story ›
Search-and-rescue efforts have turned to a cleanup operation are underway after a string of tornadoes ripped across large parts of central and southern United States, leaving at least 34 people dead.
Emergency recovery clear-up crews and volunteers have been working to clear mass piles of debris scattered across affected regions as the disaster has left many residents with no possessions.
At least 34 people were killed in tornadoes in the south of America over the past three days.
The hardest of the six states hit were Arkansas and Mississippi, with over 27 storm related deaths accounted for and more than 200 people injured.
Deaths were also reported in Oklahoma and Iowa on Sunday, and Alabama and Tennessee on Monday.
A succession of powerful storms tearing across the southern states of America are now known to have killed at least 30 people.
The storms have wreaked havoc in heavily populated areas, with the states of Arkansas and Mississippi hardest hit.
ITV News Washington Correspondent Robert Moore reports.
At least 28 people are dead and tens of thousands without power after a storm system spawned a chain of tornadoes over three days across a large swath of the US, the Associated Press reported.
The storms flattened homes and businesses and forced frightened residents in more than half a dozen states to take cover.