UK weather: Parts of Britain to be hit by thunderstorms
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Forecasts show the warm and humid air will move up across France and over the Channel into Britain on Friday before storms sweep in over the weekend. Sun-starved Britons flocked to beaches, parks and outdoor spaces this week as the nation enjoyed its hottest day of the year so far, with the mercury skyrocketing to just under 30C on Monday.
The country is braced for a sudden shift in weather patterns following a nine-day heatwave, but experts say another hot blast is in store before storms arrive.
In their outlook for the end of the week, Net Weather TV meteorologist Nick Finnis said: “The cold front stalling over southeast England and East Anglia, separating warm and humid air to the east and cooler, fresher Atlantic origin air to the west, looks to become a warm front which will move back north and northwest on Friday.
“This is due to the flow backing again ahead of a shortwave trough / thundery low moving north over France Thursday and introducing an increasingly unstable warm/humid plume again across the southeast for Friday.”
But they warned the “unstable warm, humid air” will bring with it a “risk of further thundery rain pushing north across the English Channel from France”.
They said the most severe storms would be felt in the southeast of England and East Anglia.
They added: “A ridge of high pressure extending northeast from the Azores across northern Britain will bring a mostly fine, dry and settled day for west Wales, Northern Ireland and Scotland.”
As the weekend begins the storms will clear and it will be dry and cool with fresher conditions.
However, another blast of thunderstorms later in the weekend cannot be ruled out.
Net Weather TV said in its forecast “further Atlantic upper trough disruption over the weekend against upper level high over southern and eastern Europe will likely back the flow again and send another thundery low north across France towards southern UK, bringing a possible threat of thunderstorms later Saturday and into Sunday.”
The Weather Outlook forecaster Brian Gaze today warned of a “big change” in conditions in Britain this week.
The Weather Outlook forecast said the warm weather will give way to a mixed pattern which may bring heavy downpours.
It also warned that thunderstorms are possible as early as tonight, particularly in the capital.
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It said: “Tonight thunderstorms push up from the south.
“The worst of them are likely to be in central and eastern England where some torrential downpours are expected.”
Tomorrow the storms are expected to subside and temperatures are predicted to fall slightly before the Azores hot air rolls in.
Some forecasters predicted the UK could experience its hottest day of the year today.
So far, temperatures have fallen short but experts are “hesitant” to rule out the possibility later on.
Temperatures in Santon Downham, in Suffolk, reached a high of 28.2C just before 1pm, according to the Met Office.
This is just below the 29.7C recorded in Teddington, Middlesex, on Monday, which was the hottest day of the year so far.
It comes ahead of thunderstorms set to move in across large parts of England, including London and the South East, from 6pm.
The Met Office has issued a yellow warning meaning people could see flooding to homes and businesses, communities becoming “cut off”, power cuts and delays to public transport following heavy rainfall.
Forecaster Simon Partridge said: “The UK has so far seen a high of 28.2C in Santon Downham in Suffolk at 12.45pm, which unfortunately falls just short of being the hottest day of the year.
“But I’d be hesitant to rule out it becoming hotter later on in the day as temperatures could reach the 30C point, it’s possible.
“The higher cloud hanging above parts of the country will make it difficult, as it blocks out the sun and stops it from getting any hotter, but we’ll see, there’s definitely potential.”
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