Record rainfall left large areas of the US south-east under water Sunday as roads were closed and residents were warned to stay indoors. The states of North and South Carolina have been particularly hard hit by heavy flooding, but the driving rain in recent days has spared almost none of the US East Coast.
The wild weather was blamed for four deaths in the Carolinas since Thursday.
The storms are part of a separate weather system from Hurricane Joaquin, which was downgraded to a Category Two storm Sunday as it headed towards Bermuda.
South Carolina Governor Nikki Haley has warned of the possibility of record rainfall through Sunday and President Barack Obama on Saturday issued an emergency declaration for the state, ordering federal aid for areas affected by flooding.
Streets were submerged Sunday in the historic old town of Charleston, South Carolina, as non-stop rain battered the city, with flooding closing restaurants and bars.
The National Weather Service said the city had seen 14 inches (35 centimeters) of rain over the past three days, beating a previous record of 12 inches in 1973.
"It's the worst water I have seen in the 10 years I have lived here. Neighbours tell me it's the worst since Hurricane Hugo" in 1989, said 38-year-old Jamieson Clair, a resident of the city.
Power was out in parts of South Carolina and Haley reiterated her call for drivers to keep off the roads over the weekend for their own safety.
As of mid-morning the Red Cross reported that it had opened 11 shelters across the state.
The South Carolina Emergency Management Division tweeted that more than 200 swift-water rescues had been reported since Saturday night, while the state's Department of Transportation said at least 211 state roads and 43 bridges were closed due to flooding.