Storms to smash apart Britain’s 90F heatwave with lightning to spark deluge

Storms are set to smash apart the UK’s blistering 90F (32C) heatwave with lightning and thunder which will trigger a deluge of flood water.

The UK is enjoying an Indian summer blast of heat as the country bathes in 30C sun in the South and South East this week.

The mini-heatwave follows a cooler than expected summer which didn’t see the same 40C highs as 2022.

Experts have said most of the country will see temperatures in the mid to high 20s as the week continues, with Wednesday and Thursday predicted to see the mercury nudge 32C.

However, new maps suggest the heatwave will end dramatically.

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A series of storms are due to pummel the country in just a few days’ time, bringing with them thunder, lightning, and intense rainfall.

The storms will come in from the west and primarily affect Wales, Cornwall, and Devon, coastal areas that have benefited from the recent hot weather as people have travelled to the coast.

WX Charts shows the storms. highlighted in purple, appearing across the nation on Sunday from midday.

In their forecast for September 9 to September 18 onwards, the Met Office also predicts a return to wet and windy weather.

Forecasters wrote: “Initially, the very warm, locally hot, and settled weather is likely to continue for much of the UK, albeit with a risk of some isolated thunderstorms.”

They added: “Occasional rain is possible in the far north or northwest along with some stronger winds, while some low cloud and fog is possible in coastal regions.

“A breakdown of the very warm spell is then expected to reach the northwest, before edging slowly southeast through this period. Some heavy rain is possible in the northwest, followed by fresher weather with showers.

“It is likely that any rain will tend to become lighter and more patchy as it moves southeast, although, again, some isolated thunderstorms may develop to the southeast of this in the still very warm air.”

Ahead of the weekend downpour, the concern of many has turned to the impact of the heat this week as experts say the UK and parts of Europe have been experiencing a phenomenon known as a heat dome.

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A heat dome is caused when the warmer air builds in the atmosphere at levels usually filled with cooler air.

According to Severe Weather Europe, temperatures in this column at this time of year should be around 6-7C.

Instead, they are reportedly at around 20C, a difference that will have an impact on ground temperatures.

This is being felt in the UK and to a greater extent in Europe which saw a summer of heatwave after heatwave.

Speaking about this week’s weather the Met Office explained which parts of the UK would get the best of the sunshine.

Meteorologist Jonathan Vautrey explained: “The best and most prolonged amount of sunshine will be further towards the south of the UK, with the cloud just coming and going a touch more across the far north and stretching down into central Scotland and parts of Northern Ireland as well.

“Temperatures will be continuing to climb widely into the mid-20s if not the high 20s by the time we reach Tuesday and Wednesday.

“29C is certainly possible and we may also climb towards 30C in a few spots as well, and that is a temperature we haven’t reached since the very start of July.”

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