UK weather warning: Torrential downpours and monster lightning storms to shatter heatwave
Colossal amounts of energy ploughed into the atmosphere will erupt into torrential downpours and violent lightning strikes. Temperatures will rocket this weekend reaching highs of 33C (91.4F) in parts by Monday – around 15C higher than normal for the end of August. Tropical conditions will hold out through the start of next week ahead of the monsoon deluge which threatens to put swathes of the country back on flood alert.
Southern Britain will swelter in the highest bank holiday temperatures although the mercury will rocket around the country.
Exacta Weather forecaster James Madden said: “The hot spell is about to hit and over the coming days temperatures will soar well above average for the time of year.
“Parts of the country will see maximum temperatures in the low to mid 30Cs at times through the bank holiday and during the early part of next week.
“While slightly lower temperatures will take the sting out of the extreme heat later in the week, we are likely to see some widespread thunderstorms.
“These are most likely across western Britain and where they occur there will be a risk of further flooding.”
Temperatures will remain above average through the end of August with hot weather predicted to last through the start of autumn.
Mr Madden added: “It will remain warm and summery into the latter part of next week although slightly lower temperatures compared to the bank holiday will take the sting out of the heat.
“Hot weather could hold out well into September although there are signs of a change to something more unsettled around mid-month.”
These are most likely across western Britain and where they occur there will be a risk of further flooding
UK weather forecast
Standard weather models also show warm weather holding out beyond the weekend and through next week.
Depending on movements of the jet stream, swathes of Britain could fall to the mercy of powerful thunderstorms before next weekend, according to the Met Office.
Meteorologist Dean Hall said: “It is all a question of how quickly the hot weather breaks down and this will be largely dependant on the jet stream.
“If it moves southwards and we see high pressure eroded away, we could see a gradual breakdown and there will be a risk of thunderstorms.
“These will be partly homegrown, but they may also move in from France.”
Britain will enjoy several days of freakishly hot weather before the atmospheric explosion, he added.
He said: “Beyond the weekend there are signs of temperatures remaining higher than average for the time of year.
“There will be plenty of fine, dry weather around, particularly across southern parts of the country as we tap into that very warm Continental air.”
Asthmatics are warned to take extra care this bank holiday with pollution set to rocket during hot weather.
Dirty air and extreme heat threaten misery for people with breathing conditions and other health issues.
Defra (the Department for Environment, Food and Rural Affairs) predicts ‘moderate’ pollution across much of the country over the weekend.
Levels are expected to touch ‘high’ along eastern coasts on Monday while hovering between ‘low’ to ‘moderate’ more widely.
The prediction has prompted warnings from health experts to take extra care and stay out of the sun over the next few days.
Dr Penny Woods, chief executive of the British Lung Foundation, said: “With moderate, and in places high, levels of pollution and hot weather predicted, it’s really important that everyone, especially those with a lung condition, take extra care to protect themselves.
“If you have a lung condition, high levels of pollution can cause an exacerbation of your symptoms, such as an asthma attack or a COPD (Chronic Obstructive Pulmonary Disease) flare-up.
“People with asthma may notice that they need to use their reliever inhaler more than normal when pollution is higher.”
People with lung conditions should avoid pollution hot-spots like built up areas and roads with heavy traffic, she warned.
She said: “If pollution levels are high or moderate where you live, you can take a number of steps to reduce exposure to air pollution such as avoiding busy roads and streets.
“Hot weather can also cause a flare up of symptoms for those with a lung condition.
“We’d advise keeping an eye on forecasts, staying out of the sun where possible and carrying water and your medication with you.”
Moderate pollution is forecast across much of southern and eastern Britain on Saturday before smog drifts northwards on Sunday.
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