UK weather forecast: ‘Significant rain’ and lightning to SMASH Britain ending 36C heatwave

Temperatures are starting to rise in Britain which will peak on Friday in the mid-30s. Some forecasters predict thermometers could surge to as high as 36C as searing heat from France makes its way across the Channel before baking Britain. But, BBC Weather has warned the hot weather and an incoming low-pressure system will create the perfect “recipe” for the risk of thunderstorms.

Forecasters also claim the UK could face “significant rain” hitting the nation just after the blistering heatwave ends.

BBC Weather forecaster Alina Jenkins said temperatures would soar in the coming days.

She said: “Those temperatures will keep on rising into Friday, but it is not a clear cut story.

“You will notice these frontal systems to the west of the UK, just grazing Northern Ireland, and western Scotland and that is going to bring a cooler, showery day once again.

“But, elsewhere we are starting to draw up some much warmer air from France, so for many of us on Friday it is going to be a very warm, if not, a hot day.”

She added: “For much of the UK on Friday though, it will be dry, it will be very warm if not hot, and we could see those temperatures once again around the London area getting to 34C, 35C.”

The BBC Weather forecaster said that temperatures would start to decrease, following a northeasterly breeze.

She said: “Through the weekend, we start to see an area of high pressure start to build right across the UK. That means it is going to be dry, fine. There will be some good spells of sunshine for all of us.

“But we start to pick up more of a northeasterly breeze, so temperatures will start to come down.”

Ms Jenkins then explained how a low pressure system close by could trigger thunderstorms with lightning and heavy rain hitting Britain – towards the end of the heatwave.

She added: “Really as we start to look into next week, we are still holding on to some fairly high temperatures, it is going to be feeling warm for many of us, and also we have an area of low pressure in the Bay of Biscay.

“This combination of low pressure and above-average temperatures is a good recipe for thunderstorms.

“Such as their nature, they are going to be hit and miss. But, there is a signal that some of these thunderstorms could bring some significant amounts of rain in just a short amount of time.

“That is something to keep an eye on through the early part of next week.”

Weather charts by The Weather Outlook suggest temperatures could surge to as high 36C in the coming days.

Brian Gaze from The Weather Outlook wrote on Twitter: “GFSP 00z going for 36C Friday and 34C Saturday”.

Britons will likely head to the beaches this weekend to soak up the warm temperatures while maintaining social distancing rules.

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The Met Office also predicts very hot temperatures in the coming days, before the risk of thunderstorms increases.

Its forecast for Thursday says: “Rather cloudy at first with some drizzle over hills.

“Most areas brightening up through the day with some sunshine in places. Very warm again in southeast.”

Its outlook for Friday to Sunday added: “Rather cloudy with outbreaks of rain, possibly thundery, in the northwest clearing to sunny spells and light winds.

“Very hot with sunshine in the southeast, probably gradually cooling down later.”

The Met Office’s long-range forecast also warned into next week “there is a continued risk of heavy showers and thunderstorms in many areas, particularly across the south earlier on in the period”.

But, they added: “It will be widely warm or very warm at the start of the period, and it could be hot in the southeast at times.

“Towards the end of the period, temperatures will trend back to near the average for most areas, with the southeast possibly staying warm.”

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