Met Office thunderstorm warnings will cover much of the UK later today.
One existing alert has been extended to cover most of the north of England and parts of Wales, while another was issued on Sunday morning for large swathes of central, southern, and southwestern England.
The southern warning says heavy showers and thunderstorms may cause some disruption in places. It will be in place from 10am to 7pm on Sunday, covering parts of London, Oxford, Bath and stretching as far to the southwest as Exeter.
The larger warning – for storms and heavy showers – comes into force at 12pm and lasts until 8pm. It now stretches as far north as Carlisle and Newcastle, and covers areas like Birmingham and Cambridge further south.
Southern parts of Scotland are covered by a separate rain warning from 1pm to midnight on Sunday.
What will the weather be like on Bank Holiday Monday?
A warning is in place for thunderstorms in Scotland between 11am and 10pm on Bank Holiday Monday.
The alert, which covers Edinburgh and most eastern parts of the country, promises “slow-moving heavy showers and thunderstorms”, which “may cause flooding and disruption in places”.
Pic: Met Office
Sky News weather producer Joanna Robinson said earlier this weekend: “Bank Holiday Monday will bring further showers, some thundery, but western parts will turn drier later on.”
She had cautioned on Saturday that new weather warnings could be announced at short notice and has been proven right this morning.
Met Office forecaster Craig Snell said previously: “There will still be some sunshine around on Sunday and Monday, but we’ll certainly be dodging downpours.
“Watch out for some thunderstorms especially across parts of northern and central England and northeast Wales too.”
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Some 20 million cars were expected to be on the roads on Friday, as the long weekend coincided with the half-term break for many schools.
There are also planned engineering works throughout the rail network, which could be compounded by bad weather.
Aviation analytics company Cirium said Friday was the busiest day of the year for UK airports since October 2019, with more than 3,150 departing flights.
Around 8,486 flights were scheduled to take to the skies between Saturday and Monday, with the most popular destinations for UK departures being Dublin, Amsterdam, Palma, Alicante and Malaga.