Weather misery is set to batter the UK just days after it roasted in a 38.7C heatwave – the hottest since records began.
The Met Office today issued a yellow weather warning for thunderstorms across England, Scotland and Wales.
The first batch of the storm was set to sweep across northern Scotland this afternoon with 40mm of rain in just 60 minutes.
But then an even bigger band of rain will hit Wales and the west of England tomorrow, sparking life-threatening floods.
Then on Wednesday other parts of England that missed out on Tuesday’s storms could then fall into the firing line.
The Met Office has warned the predicted floods, lightning, thunder and strong winds could spark travel chaos.
It warned train and bus services may be delayed or cancelled, driving conditions will be difficult and roads could be closed due to flooding.
The thunderstorms and heavy rain may also spark blackouts, with fast-flowing flood water potentially causing danger to life.
In its weather warning, the Met Office said: “There is a small chance of fast flowing or deep floodwater causing danger to life.”
“Thunderstorms and outbreaks of heavy rain will arrive across the far southwest early on Tuesday, then spreading further northeast across England and Wales and increasing in frequency during the day.
“In a few places there is the potential for 30mm of rain to fall in an hour or two and 40mm to fall in three hours. Many parts of the warning area will miss the heaviest rainfall.”
In its detailed forecast for Tuesday, it added: “Thunderstorms and outbreaks of heavy rain will arrive across the far southwest early on Tuesday and then spread further northeast across England and Wales whilst also increasing in frequency during the day.
“In a few places there is the potential for 30mm or so of rain to fall in an hour or two and 30 to 50mm of rain to fall in three hours.
“Parts of northern and eastern Wales, the western Midlands and southern parts of northwest England are thought most likely to see the highest rainfall totals.”
As for Wednesday, the Met said: “Thunderstorms and outbreaks of heavy rain already affecting some southern and western parts of the warning area during the early hours of Wednesday then become more widespread through Wednesday daytime.
“In a few places these thunderstorms could produce 30 mm of rainfall in an hour and 40 to 50mm in a few hours. Some parts of the warning area will miss the heaviest rainfall.”
The bad weather comes after Britain was left soaked last week as floods and dramatic thunder and lightning struck the country following the recent heatwave.