The storm could make landfall in parts of Britain today as strong winds and heavy rain lashed the country.
Speeds in excess of 80 mph have been recorded, with reports of wind damage causing chaos on the roads.
Yellow warnings for wind and rain continue in the west and elsewhere, with more likely to occur.
Meteorologist Tom Morgan said the Met Office could not confirm any tornadoes, but they are “not out of the question”.
“We have a deep Atlantic area of low pressure that brings a very strong band of rain and high winds across the country, but especially in the south of England,” he said.
“We saw very strong gusts of wind on the south coast … and some reports of wind damage.
“It has not been excluded that the brief was localized funnel clouds or tornadoes.
“Over the past two days we’ve seen reports and photos of funnel clouds and water jets that look like tornadoes.”
Morgan said tornadoes occur when funnel clouds extend from the cloud base to the ground.
He said wind speeds of up to 87 mph were recorded at an exposed location on the Isle of Portland in Dorset, and 60 mph in Hampshire, Dorset, Wiltshire and Sussex.
“We can’t confirm that (the tornado) happened, but we have seen reports of wind damage,” Morgan said.
“Sometimes a situation like that lends itself to tornadoes, so it’s something we can’t rule out and there’s evidence to suggest that there has been.”
Travel disruption and chaos have been seen across the UK as heavy rain and wind gusts across the country.
Northamptonshire Police said they had received a large number of weather calls and trees were downed on dozens of county roads.
The Vicar Reverend Richard Coles of Findon took to social media after a brutal close call.
“We were in church praying for the COP26 convention when what we can only describe as a tornado destroyed many trees including this yew before the victory,” he tweeted.
South Western Railway has apologized to the customers after the trees of the network were blocked and said that there could be cancellations, delays and change in services.
Euston station in London has warned passengers of serious delays in train services between Rugby and Euston.
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Meteorological forecaster Annie Shuttleworth said the current weather is fairly typical for fall, although there have been regular heavy rains.
The meteorologist said that despite the average temperature for October being higher for more than a week, the situation will drop to a single digit in the coming days.
Forecasters said conditions are extreme even in view of the normal fall in rainfall.
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