Thunder and torrential rain will continue to cause havoc across Britain, with further risk of flooding.
The Met Office has issued a thunderstorm yellow weather warning in southern England and South Wales from midday until 9pm on Thursday, while another for rain is in place until midday spreading into the Midlands and the north.
The Environment Agency has also listed 12 flood alerts, with 23mm of rainfall recorded in parts of the country on Wednesday.
But while England and Wales batten down the hatches, areas of Scotland could see highs of 24C.
The Met Office had also issued two yellow weather warnings for thunderstorms yesterday, covering a large portion of the country, before floods caused chaotic scenes.
BBC forecaster Stav Danaos described the weather outlook as “slow moving thunderstorms, torrential downpours, gusty winds” and “some flash flooding issues in places”.
He said Wednesday saw some “spectacular lightning bolts”, with rain continuing into the night for many, though all Brits experienced a “warm and muggy” lead into Thursday.
“The rain across the south should spread northwards and westwards all the while against some heavy bursts in it, but generally it should be dry for much of Scotland and Northern Ireland,” he continued.
Loch Rannoch could see the peak of the warmth on Thursday, with the Met Office predicting a high of 24C by the afternoon, while Norwich’s expected 20C is the hottest England can hope for.
“Given some sunshine and bright spells across southern England [and]South Wales, more thunderstorms will break out into the afternoon,” said Mr Danaos.
“Again, like the last few days, they could cause some problems.”
Friday will see storms developing in central, northern and eastern areas and it could also be the last of the warm and humid air.
The forecaster said the weekend will see a “big change”, feeling “windier and fresher as an Atlantic low sweeps across our shores”.
Spells of showery rain, heavy at times, will affect much of England and Wales before spreading into parts of Northern Ireland and parts of southern Scotland later. Brighter over southern England later, but then some thundery showers expected.
Spells of showery rain will affect parts of northern and western UK overnight. Early evening thundery showers over parts of southern England soon fading. Another mild night.
A mixture of cloud and bright or sunny spells across the UK. Also a few showers about, though not as heavy as during the last few days.
Sunny spells on Saturday with a few showers in the east. Overnight wind and rain clearing east on Sunday with showers following. Further rain possible in the west on Monday.