A weather warning for thunderstorms has been issued with torrential rain and lightning set to hit the UK .
Flood alerts have been declared while there are fears the miserable conditions could cause significant travel disruption later on Monday.
A large portion of the south west is expected to be worst affected, including Devon, Cornwall, Somerset, Wiltshire and South Wales, however outbreaks of rain are forecast across most of Britain.
Bonnie Diamond, a meteorologist at the Met Office, told the Standard: “We have a weather warning for thunderstorms, focused in the south west of England and in Wales.
“Some areas will get 30-40mm of rain in three or four hours.
“The rest of the country will be overcast with outbreaks of rain, except for Northern Ireland, which should be clear.”
— Met Office (@metoffice)September 9, 2019
The warning from the Met Office said: “Slow-moving heavy showers and thunderstorms could cause travel disruption in the southwest today.
“Some flooding of a few homes and businesses likely, leading to some damage to buildings or structures.”
Temperatures are forecast to peak in the high-teens today. Tuesday will see spikes of around 21 degrees in the south east, with the rest of the week also predicted to be in the low 20s.
On Wednesday, the UK will see the remnants of Hurricane Dorian.
The storm, which was a category five at its peak, caused as many as 50 deaths when it struck last week.
It has trravelled from the Bahamas in the Caribbean and up the American coastline, and last night was battering the eastern coast of Canada, with reports of power outages and roofs being ripped off buildings.
The rains and winds forecast for Britain will not be as fierce as those in America, Canada and the Caribbean.
“The storms today are not the remnants of Hurricane Dorian, those will bring in rain later on Tuesday but will clear up by Wednesday,” Ms Diamond said.
Met Office forecaster Craig Snell had previously told the Standard: “ “It will be the tail end of [the hurricane].
“At this point it will be a very different system than what it was over the Bahamas and US.”