The glorious summer sunshine will end “with a bang” a forecaster has claimed, as weather systems in the Atlantic sweep across Britain – sparking fierce thunderstorms. As the thunderstorms sweep across the nation temperatures could soon tumble by as much as 10C. The UK is currently basking in blisteringly hot sunshine with thermometers nudging towards 33C after heat from Africa moved northwards across Britain.
But, BBC Weather forecaster, Susan Powell, warned the scorching conditions will soon be disrupted and it “is all going to end with a bang”.
She said: “Our weather story this week is all about the heat. Building heat across the UK working its way northwards.
“In some areas, temperatures could touch 32C, 33C before the week is out.
“But, it looks like it is all going to end with a bang, with some thunderstorms Friday, into the weekend.”
Weather forecast: Thunderstorms to crash into Britain towards the end of this week
Rain and thunderstroms sweeping across the UK this weekend
She added: “Where is the heat coming from? Up from northern Africa with a building area of high pressure, it is getting funnelled across western Europe and extends into the UK.
“All the way into Scotland and Northern Ireland on Thursday. Then by Friday, notice the map starts to turn yellow, and especially for the weekend – it will start to become fresher.
“I think thunderstorms herald in the arrival of the cooler air, but low pressure eventually taking over for the weekend.
“Fresher westerly winds, some more persistent rain to the north of the UK and scattered showers for the south.”
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BBC Weather: Thunderstorms to hit after the heatwave
The weather forecaster said on Thursday the heat would move across most of the UK with temperatures in Scotland reaching 27C and 32C or 33C in London.
She described Friday as “changeover day” as thunderstorms “start to break out”.
Ms Powell said: “Still some quite intense heat possible across eastern areas before those showers arrive.”
On Saturday, the weather forecaster said it would feel “considerably cooler” than it had for most of the week, adding: “Temperatures will be around average, 10C down on the course of the week, but 21C or 22C possible.”
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Weather forecast: BBC predict temperatures to hit 33C on Thursday
But, it looks like it is all going to end with a bang, with some thunderstorms Friday into the weekend
The BBC Weather forecaster concluded that on Sunday low pressure would continue to dominate, “bringing the threat of some more persistent rain to the far northwest, keeping things breezy for all areas and some showers from time to time.”
BBC Weather forecaster Tomasz Schafernaker has also warned of thunderstorms in the coming days.
He said: “The thinking is by the time we get to the weekend, low pressure is going to swing in off the Atlantic and the fresher Atlantic winds will push the heat further away towards the heat so temperatures will come right down.”
UK weather: Colder air hitting this weekend
The Met Office has issued a series of yellow weather warnings for thunderstorms in the coming days.
A Met Office statement read: “Heavy showers and thunderstorms are likely to break out on Friday afternoon and evening.
“Many places will miss the storms, but where they do occur, torrential downpours could bring 30-50mm rain in a hour, with hail and lightning.
“The storms will slowly clear northeastwards on Friday night, perhaps not clearing northeast Scotland until Saturday morning.”
Temperature records in the UK – chart
The whole of the nation is covered by thunderstorm warnings through Thursday to Saturday after the blistering heat bakes Britain.
The Met Office outlook for Thursday reads: “Hot and sunny across most parts.
“A few thunderstorms perhaps developing across Scotland during the afternoon, then a risk of more widespread thunderstorms across the southwest later.”