Storm Dennis has hammered Britain, bringing a month's worth of rain in just 48 hours to parts of South Wales, which bore the brunt of the severe weather.
Rivers across Britain burst their banks and a number of severe flood warnings remain in place as authorities strive to get people to safety and protect homes and businesses.
The Met Office, Britain's meteorological service, said the disruption caused by the second severe storm in as many weeks is set to carry through into Monday.
Major incident declarations were made in a number of areas in England and Wales while a man in his 60s died after falling into the River Tawe in South Wales on Sunday.
His body was found further along the river, Dyfed-Powys Police said on social media.
Police said his death was not being treated as suspicious or being linked to the bad weather.
On Saturday, Storm Dennis was blamed for the deaths of two men who were pulled from the sea in separate searches off England's southeast coast.
Dennis has been so intense that England posted a record number of flood warnings and alerts and a rare "red warning" for extreme life-threatening flooding was announced for South Wales.
Though the warning only lasted a few hours, South Wales Police declared a major incident as firefighters and rescue crews continued to help communities following multiple floods, landslides and evacuations.
The Met Office said the highest wind gust recorded was 146km/h at Aberdaron in North Wales on Saturday.
It also said 157mm of rain fell at Crai Reservoir in the Welsh county of Powys over 48 hours to Sunday morning.
One of the worst-hit areas in South Wales was the village of Nantgarw, Rhondda Cynon Taff, near Cardiff, which saw entire streets left underwater since the early hours of Sunday morning.
