The army has been deployed in France and rescue teams are searching for survivors in Italy after heavy rain and winds from Storm Alex left two dead and 20 missing.
Breil-sur-Roya, a French village near the Italian border, was a place of devastation with houses buried in mud and upturned cars stuck in the river bed.
In northwestern Italy, the "historical" flood destroyed a section of a bridge over the Sesia River.
French Prime Minister Jean Castex has deployed the army because 20 people are no longer reported on his side of the border following flash floods that washed away homes and triggered landslides.
A pile of vehicles on a road in Breil-sur-Roya in south-eastern France caused widespread damage in the Alpes-Maritimes department on Sunday after extensive flooding
A partially submerged hatchback in mud and rubble in Breil-sur-Roya, south-east France on Sunday
People arrive at Nice airport after being rescued from the floods in southern France by the Army de Terre on Sunday
A worker digs a vehicle out of mud on a street in Breil-sur-Roya in south-eastern France on October 4, 2020 after extensive flooding caused widespread damage in the Alpes-Maritimes department
People are walking over faded branches after Storm Alex swept Europe and damaged many areas in France and Italy
Residents clean a shop in Garessio, Piedmont, after a landslide on October 4, 2020 after storms hit the region. Two people died after storms hit southern France and northern Italy, roads and bridges were damaged or destroyed, and thousands were left without electricity
A man walks past a stack of vehicles on a street in Breil-sur-Roya, in south-eastern France
An army helicopter carried residents from Saint-Martin-de-Vesubie from the affected areas on Sunday after the extensive flooding
In Breil-sur-Roya, in south-eastern France, some cars were washed up and submerged in mud as floods caused devastation
"There are a lot of people from whom we have no news," said Castex.
On the Italian side of the border, some villages were cut off and many roads were blocked.
A 53-year-old firefighter died during a rescue mission in the Aosta Valley, and a 36-year-old man died after his car was swept by a river in Piedmont.
French rescue efforts focused on the Roya Valley, where around 1,000 firefighters, assisted by helicopters and army units, resumed their search to find survivors and help people whose homes were destroyed or inaccessible.
In Breil-sur-Roya, in south-eastern France, a gendarme stands near a vehicle that is partially submerged in mud
Tourists have a drink while sitting at the table of the flooded street cafe in Riva dell & # 39; Erbaria in Rialto as the canal water rises in Venice, Italy
This general view shows a vehicle partially submerged in the mud at Breil-sur-Roya in south-eastern France
In Breil-sur-Roya, southeastern France, on October 4, 2020, people stand near a car that is partially submerged in mud, triggering landslides. (Photo by NICOLAS TUCAT / AFP) (Photo by NICOLAS TUCAT / AFP via Getty Images)
A worker looks at a mud-covered street in Breil-sur-Roya in south-eastern France on October 4
Storm Alex crashed onto the west coast of France on Thursday, bringing high winds and rain across the country before moving to Italy, where regions to the north suffered a rush on Saturday.
"What we are going through is extraordinary," said the Prefect of the Alpes-Maritimes Region, Bernard Gonzalez.
"We are used to seeing pictures of such disasters on other continents, sometimes with a lack of concern, but this affects us all," he said.
France has declared the region a natural disaster area.
A gendarme stands among rubble including vehicles in Breil-sur-Roya in south-eastern France
Residents take a look at a mud-covered street in Breil-sur-Roya in south-eastern France on October 4
A resident looks down a mud-covered street in Breil-sur-Roya in south-eastern France
Local authorities sheltered around 200 people overnight while food and thousands of bottles of water were flown to remote villages cut off by the storms.
Gonzalez urged the families of the missing people not to give up hope.
"Just because loved ones weren't able to contact them doesn't mean they got hit by the storm," he said.
Residents clear a street after a landslide on October 4, 2020 in Garessio, Piedmont, after storms hit the region
Residents clean a street after a landslide on October 4, 2020 in Garessio, Piedmont
A soldier carries packs of bottled water for the residents of Breil-sur-Roya in south-eastern France
In Breil-sur-Roya, in south-eastern France, a policeman walks between vehicles submerged in mud
The shores of Locarno are under water after the water level of Lake Maggiore rose to 195.47 meters due to the heavy rainfall of the last few days in Locarno, Switzerland
Many landline and some cellular phone services were disrupted and some villages used satellite phones to communicate with emergency services.
Despite predictions of more rain, rescue efforts should continue throughout Sunday, Gonzalez said.
"The helicopter procession will last all day," he said, adding that the prospect of heavy weather was "a concern".
Almost FOUR INCHES of rain submerges parts of the UK and torrential rains are flooding streets, shops and homes as forecasters warn of MORE wet weather by mid-week
Parts of Britain were submerged this weekend after a month of rain in one day, devastating homes, streets and shops.
Parts of the UK were the bitter end of a muggy summer, soaked in 3.5 inches of rain that fell within 24 hours when Storm Alex wreaked havoc for a third day.
It's not all doom and darkness, however, because while Machrihanish saw Scotland the lowest temperature of 0.9 ° C today, parts of Sussex bathed in a mild 16.6 ° C.
The wet weather is unlikely to subside for the next week as "persistent rain" will hit the south west of England on Monday.
The rest of the week will bring "longer periods of rain" across the country – most commonly in the north and west – with some heavy showers on Thursday.
Firefighters and water utilities are seen in a flooded area in Hemel Hempstead after heavy rain last night
A resident clears water from her flooded house on Sunday. The flooding was due to the heavy rain in Hemel Hempstead last night
A resident of Rothbury, Northumberland fetched water from his vehicle after the River Coquet blew up its banks
On London's Millennium Bridge, people walked under umbrellas during the giant flow when Britain experienced large downpours
South Wales, Bristol and Gloucestershire all fall under the Met Office's amber weather warning, which means the downpour can cause fast-flowing or deep flooding, putting life at risk. Right: A precipitation map for Great Britain
South Wales, Bristol and Gloucestershire fell within the Met Office's amber weather warning today, meaning the downpour would cause fast flowing or deep flooding and endanger life.
The final warning of the pandemic also meant the UK could expect chaos in mass transportation with dangerous driving conditions, road closures, and delays and cancellations of public transport.
These warnings were valid until noon. There is now a yellow weather covering only Northern Ireland.
The bad weather was undoubtedly a disappointment for the 45,000 people who were hoping to run or run the 40th London Marathon on their own 26 miles (42 km) route after the usual mass event was retired due to the coronavirus pandemic.
Only elite athletes were allowed to brave the pouring rain to take part in the race in central London today due to restrictions in social distance.
The Met Office said it had rained 4.6 inches at Blackpitts Gate in Somerset and 4 inches at Princes Marsh, Hampshire in the 42 hours that ran until 6 p.m. on Saturday.
Floods have hit train traffic in London and Scotland. Connections between St. Pancras and Finsbury Park have been cut as travel times are longer due to flooding on the route.
The adverse weather conditions mark the third day of the mayhem that Storm Alex brought to the UK.
A family of four had to be rescued by firefighters from a street in Billericay, Essex yesterday after their car caught in flood, while police warned drivers after multiple accidents on wet roads.
ScotRail said the affected areas would need to be checked first this morning after yesterday's bad weather to ensure the routes are safe for operation, which is causing some lines to be closed.
Rod Dennis, spokesman for RAC Breakdown, said road conditions were "miserable, if not downright dangerous" for drivers this weekend. He added that drivers need to be prepared for an "ugly mix" of surface spray, gusty winds and, most likely, some interference on the roads.
A woman was rescued by her husband after driving into four feet of water this morning in Essex while the train lines are submerged as Britain was hit by heavy downpours and storms from Storm Alex.
Water companies speak to residents of flooded homes in Hemel Hempstead. Last night's downpours caused chaos in several households
Emergency services rescue drivers whose vehicles in Kirkliston, West Lothian, got stuck in floods after heavy rain on Sunday
The water at Kirkliston, West Lothian, was so deep that car tires were completely submerged. Emergency services had to rescue trapped cars
A driver of a car stuck in deep flood speaks to rescue workers when they tried to get him out. Great Britain was hit by pouring rain
Flash floods have wreaked havoc in Hemel Hempstead. Sandbags were handed out to stop water-damaging homes and cars
A desperate resident tries to shut off the water supply from her home in Hemel Hempstead after a flash flood last night
The bad weather will no doubt be a disappointment for the 45,000 people who are hoping to run or run the 40th London Marathon on their own 26.2-mile route after the usual mass event is retired due to the coronavirus pandemic. But it didn't stop those runners in Southsea
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