Major flooding in Monmouth saw people rescued from their homes. Some had to be evacuated to a nearby library.
Monmouthshire MP Catherine Fookes said it was a “really worrying time” for residents and businesses” and while the “big clear up” continued, its existing flood defences would need to be reconsidered.
“This community is incredibly resilient and kind,” Fookes said.
The town’s fire and rescue service said hundreds of homes had been left without power.
Flooding has been less severe in England, external, but an ongoing risk remains, with 24 flood warnings in place.
The weather has also triggered major disruption on rail networks.
All lines were blocked between Swindon and Bristol Parkway on Sunday morning, Great Western Railway said, with services impacted between London Paddington and Swansea. The disruption is expected to last until 16:00.
National Rail has warned passengers to check before they travel, external and the AA told drivers to avoid travelling in “hazardous weather”.
Additional reporting by Nicholas Bourne
