Flood risk as thunderstorms and torrential rain expected to sweep across UK

Thunderstorms and torrential rain are forecast to sweep across the UK, bringing an end to a week of blazing sunshine and scorching temperatures.

The Met Office has warned Friday's storms could bring lightning, hail and flooding to some areas, with up to 50mm of rain falling in an hour.

A yellow weather warning is in place for most of England, Scotland and east Wales from midday to 9am on Saturday.

The south-west and part of the south-east coast of England is not covered by the warning.

Met Office meteorologist Craig Snell told the PA news agency: "Not everyone will see a storm, but if you catch one, you will certainly know about it."

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Heatwave hits the UK
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Heatwave hits the UK
Left to right Claudia Swian aged 19, Lauren Sharpe aged 19 and Maia Benstead aged 19, enjoy the warm weather in Bridlington, East Yorkshire, as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
Crowds gather on the beach in Bournemouth as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
Crowds gather on the beach in Bournemouth as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
A train passes through the shimmering heat from railway lines in Ashford, Kent, as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
Sunbathers take pictures of the deer in Richmond Park, London, as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
Cows use the River Thames to cool off in Bourne End, Bucks, as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
A member of the Ambulance service looks out from Bournemouth Pier as crowds gather on the beach in Bournemouth as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
A view of the beach in Brighton as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
A man by a fountain at Trafalgar Square as thermometers hit 34C.
People enjoy the warm weather by Bridlington Harbour as Britain is braced for a June heatwave as temperatures are set to climb into the mid-30s this week.
Paddle boarders in Bourne End, Bucks, as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
A view of the beach in Brighton as Thursday could be the UK's hottest day of the year with scorching temperatures forecast to rise even further.
The scene on the beach in Bournemouth, Dorset, after the UK officially recorded its warmest day of the year so far when the temperature reached 32.6C (90.7F) at London's Heathrow Airport at 2.46pm. (Photo by Andrew Matthews/PA Images via Getty Images)
Libby Patterson 20 from Tynemouth enjoys an ice-cream in Whitley Bay, during officially the hottest day of the year so far. (Photo by Owen Humphreys/PA Images via Getty Images)
People eating ice-cream in Whitley Bay, during officially the hottest day of the year so far. (Photo by Owen Humphreys/PA Images via Getty Images)
Friends James Robinson and Charlotte Inglis dangle their feet in the River Thames in Henley, as Britain is braced for a June heatwave as temperatures are set to climb into the mid-30s this week. (Photo by Jonathan Brady/PA Images via Getty Images)
People enjoy the hot weather by Three Shires Head on the River Dane, where Cheshire, Derbyshire and Staffordshire meet, as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week. (Photo by Jacob King/PA Images via Getty Images)
PORTHCAWL, UNITED KINGDOM - JUNE 24: Women sunbathing on Sandy Bay beach as the Met Office warn temperatures could reach 34 degrees this week on June 24, 2020 in Porthcawl, United Kingdom. The First Minister of Wales Mark Drakeford has announced that all non-essential shops will be allowed to open their doors again in Wales from Monday but people will be asked to continue to "stay local" with five miles given as guidance until July 6. (Photo by Matthew Horwood/Getty Images)
A couple sail in an inflatable dinghy in the London Docklands, in front of the skyline of Canary Wharf, during officially the hottest day of the year so far. (Photo by Victoria Jones/PA Images via Getty Images)
A sunbather enjoys the sunshine in Oxford, during officially the hottest day of the year so far. (Photo by Steve Parsons/PA Images via Getty Images)
BLACKPOOL, UNITED KINGDOM - JUNE 24: Seagulls wait in hope of a titbit at Blackpool as people enjoy the fine weather on June 24, 2020 in Blackpool, United Kingdom. The UK is experiencing a summer heatwave, with temperatures in many parts of the country expected to rise above 30C and weather warnings in place for thunderstorms at the end of the week. (Photo by Christopher Furlong/Getty Images)
TOPSHOT - Beachgoers enjoy the sunshine as they sunbathe on the beach and play in the sea in Southend on Sea, south east England, on June 24, 2020. - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Ben STANSALL / AFP) (Photo by BEN STANSALL/AFP via Getty Images)
BLACKPOOL, UNITED KINGDOM - JUNE 24: People enjoy the fine weather at Thornton Cleveleys promenade on June 24, 2020 in Blackpool, United Kingdom. The UK is experiencing a summer heatwave, with temperatures in many parts of the country expected to rise above 30C and weather warnings in place for thunderstorms at the end of the week. (Photo by Christopher Furlong/Getty Images)
A man back flips into the River Dane by Three Shires Head, where Cheshire, Derbyshire and Staffordshire meet, as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
In Pictures: Sunseekers savour delights of June heatwave from coast to coast
People cool off in the River Cam at Grantchester near Cambridge as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
Sue Ingle enjoys the sunny weather in Scarborough as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
People enjoy the hot weather by Three Shires Head on the River Dane, where Cheshire, Derbyshire and Staffordshire meet, as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
Front of photograph, Charlotte Young enjoys the sunny weather in Scarborough as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
People enjoy the hot weather by Three Shires Head on the River Dane, where Cheshire, Derbyshire and Staffordshire meet, as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
People enjoy the hot weather by Three Shires Head on the River Dane, where Cheshire, Derbyshire and Staffordshire meet, as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
People relax on Crosby Beach as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week. PA Photo. Picture date: Wednesday June 24, 2020. See PA story WEATHER Hot. Photo credit should read: Peter Byrne/PA Wire
Seagulls fly around as people enjoy the hot weather in Cullercoats Bay, Tyne and Wear as Britain is braced for a June heatwave as temperatures are set to climb into the mid-30s this week.
A man enjoys the sunny weather in Scarborough as Britain is braced for a June heatwave with temperatures set to climb into the mid-30s this week.
A family pass by as the water system irrigates plants during the hot and sunny weather at Kew gardens in London, Wednesday, June 24, 2020. Britain is braced for a June heatwave with temperatures predicted to climb into the mid-30s this week.(AP Photo/Frank Augstein)
Visitors enjoy the hot and sunny weather with a walk past flowers at Kew gardens in London, Wednesday, June 24, 2020. Britain is braced for a June heatwave with temperatures predicted to climb into the mid-30s this week.(AP Photo/Frank Augstein)
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
In Pictures: Cooling down as a heatwave looms
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / various sources / AFP) (Photo by TOLGA AKMEN/Tolga Akmen/AFP via Getty Images)
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / various sources / AFP) (Photo by TOLGA AKMEN/Tolga Akmen/AFP via Getty Images)
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
Sun-seekers cool off in the water and sunbathe on the riverbank at Hackney Marshes in east London on June 24, 2020, as temperatures reached 31 degrees C at Heathrow Airport on the hottest day of the year - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
The scene on the beach in Bournemouth, Dorset, after the UK officially recorded its warmest day of the year so far when the temperature reached 32.6C (90.7F) at London's Heathrow Airport at 2.46pm. (Photo by Andrew Matthews/PA Images via Getty Images)
The scene on the beach in Bournemouth, Dorset, after the UK officially recorded its warmest day of the year so far when the temperature reached 32.6C (90.7F) at London's Heathrow Airport at 2.46pm. (Photo by Andrew Matthews/PA Images via Getty Images)
Swimmers take to the water off the beach in Bournemouth, Dorset, after the UK officially recorded its warmest day of the year so far when the temperature reached 32.6C (90.7F) at London's Heathrow Airport at 2.46pm. (Photo by Andrew Matthews/PA Images via Getty Images)
A man dives into water in the London Docklands, in front of the skyline of Canary Wharf, during officially the hottest day of the year so far. (Photo by Victoria Jones/PA Images via Getty Images)
Beachgoers enjoy the sunshine as they sunbathe on the beach and play in the sea in Southend on Sea, south east England, on June 24, 2020. - Just days after lockdown ended and European travel restrictions were lifted, many were staying home in the cool Tuesday as a heatwave hit the continent with temperatures touching 40 degrees Celcius. Britain was bracing for a flood of visitors to its beaches with the heatwave expected to last until Friday and temperatures set to climb into the mid-30s in the south and centre of the country. (Photo by Ben STANSALL / AFP) (Photo by BEN STANSALL/AFP via Getty Images)
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The change in weather comes as the UK experienced its hottest day of the year so far on Thursday, with the mercury rising to 33.4C (92.1F) at Heathrow Airport in west London.

The heatwave saw thousands of people flock to the south coast, resulting in a major incident being declared and Government experts warning people against gathering in large groups.

Scotland and Wales also experienced their hottest days of the year so far, with the former recording 30.8C (87.4F) in Prestwick, and the latter seeing temperatures rise to 31.4C (88.5F) in Trawsgoed, near Aberystwyth.

Temperatures on Friday are forecast to reach 31C (87.8F) in London, the mid-20s for the rest of England and up to 27C (80.6F) in the Scottish Highlands, making for a "relatively warm and humid" day, Mr Snell said.

The storms are expected to clear northeastwards on Friday afternoon and into the evening, but will remain over north-east Scotland until Saturday morning, the Met Office said.

The Environment Agency issued two flood alerts – meaning flooding is possible – for the waterways around Loughborough in Leicestershire and the River Trent tributaries in Nottinghamshire.

Temperatures are expected to drop on Saturday to 22C to 23C (73.4F) in London, and stay around the "high teens to low 20s" for the rest of the UK, Mr Snell said.

He added: "It (the weather) will change, but it will be more what people expect our summer to be like – a mix of sun and showers."

Earlier on Thursday, Bournemouth, Christchurch and Poole council said it was left with no choice but to declare a major incident after services were "completely overstretched" as huge numbers of visitors defied advice to stay away from its beaches.

Condemning the "irresponsible" behaviour of crowds who gridlocked roads, dumped rubbish, abused refuse collectors and parked illegally, the council said extra police patrols have been brought in.

There have been warnings not to be tempted to cool off in open water, following the deaths of two people in recent days in Berkshire and Scotland.

A 10-year-old boy died after getting into difficulty in Loch Lubnaig, near Callander in the Highlands, on Wednesday evening, Police Scotland said.

Meanwhile, a body was found following a search for a missing man at Lulle Brook in Cookham, Berkshire.

A cousin told the PA news agency that Syrian refugee Eyad Al Ryabi had gone into the water on Tuesday evening to try to help his friend.

The friend survived and was taken to hospital in a serious condition, Thames Valley Police said.

Meanwhile, the AA has urged drivers to check their tyre pressure and coolant levels before leaving home following an increase in heat-related breakdowns.

AA president Edmund King said: "With the combination of the severe heat, cars that have been in lockdown and millions of vehicles that have delayed their MoTs, the AA has seen more breakdowns."

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