CHARLESTON, SC (WCSC) - The National Weather Service in Charleston declared a flash flood emergency for Charleston, Berkeley and Dorchester Counties early Sunday morning.
Emergency officials from all three counties have reported flood waters entering homes.
In downtown Charleston, the College Park area and Moncks Corner, multiple reports have come in of water in homes, road closures and submerged cars.
Radar shows the most intense rainfall is setting up across an area from Awendaw to Moncks Corner, with hourly rainfall rates between one and three inches possible and an additional three to six inches of rain possible through sunrise.
Forecasters expect Charleston, North Charleston, Mount Pleasant, Goose Creek, Hanahan, Moncks Corner, McClellanville and the I-26/I-526 interchange to be affected.
In Dorchester County, the area includes the Oakbrook community, between Miles Jamison Road, Old Trolley Road and Ladson Road, where county emergency management officials reported swift-water rescue teams are en route.
Dorchester County officials say they are focusing on rescue operations, adding the county does not have sandbags available to residents, and urge people who see water entering their homes to evacuate to the county shelter at Summerville High School if they feel unsafe.
Anyone who needs assistance evacuating should call 911.
The weather service says total rainfall amounts of between 12 to 18 inches have fallen and an additional two to four inches of rain is expected through 6 a.m.