BBC Weather: Temperatures continue to rise during heatwave
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September weather has seen a turnaround from the August gloom and showers, with sunny skies and hot conditions. However, after a few days of heat, Britain will be hit by thunderstorms, lightning and intense rainfall, with Met Office warnings in place as soon as tomorrow.
After a damp August, temperatures in recent days have soared, with today expected to see around 28C in southern England with the potential to reach 30C.
Forecasters have predicted sweltering temperatures again on Wednesday, with up to 29C expected – however it’s not to last.
Storms are forecast to hit the UK from Wednesday onwards, starting in the southwest before heading across England and Wales on Thursday.
Now the Met Office has issued two days of thunderstorm warnings for parts of the UK.
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The Met Office has issued a thunderstorm warning for Wednesday and Thursday, with much of the country seeing some heavy rain.
On Wednesday the warning is in place from 11am to 9pm and is for South West England and Wales.
Of this warning, forecasters said: “An area of showers will move northwards across southwest England and south Wales on Wednesday.
“Whilst many areas will see little rainfall there is the chance of some heavy and thundery downpours developing, particularly late in the afternoon.
“Where these occur 30-50 mm of rain could fall in less than three hours though only a few spots would likely see these totals. Lightning may also be a hazard during the day.”
On Thursday this becomes more widespread and the warning is in place from 11am until 9pm for East Midlands, East of England, North East of England, North West England, Northern Ireland, South West England, Wales, West Midlands and Yorkshire and Humber.
Of Thursday’s warning Met Office forecasters write: “Following overnight rain and showers, more intense showers and thunderstorms are expected to break out fairly widely from late-morning, before easing during the evening.
“Whilst most areas will miss the most intense storms, torrential downpours are possible in a few places.
“Where these occur, there is potential for 20 to 30 mm of rain in less than an hour and up to 40 mm in two hours.
“This would have the potential to generate surface water flooding, especially if it falls over an urban area.”
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