The latest on the rainstorm that is pounding parts of the East Coast (all times local):
6 a.m.
Thousands of South Carolina residents are waking up to homes without electricity after historic flooding throughout the state.
An online coverage map showed that power was out early Monday morning for more than 13,500 South Carolina Electric & Gas customers. Nearly 12,000 of those outages were in Richland and Lexington counties, where flood waters have been abundant in many neighborhoods and commercial areas.
Duke Energy said that about 7,800 of its customers had no electricity, primarily in the northwestern corner of South Carolina.
As of late Sunday afternoon, officials said more than 6,000 electric cooperative customers were without power, most of those also in the central and northwestern parts of the South Carolina.
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5:50 a.m.
A mother and her infant affected by historic South Carolina flooding have been rescued from their roof top via helicopter.
The U.S. Coast Guard said in a news release that a crew plucked Cristi Mueller and her 15-month-old daughter Kailynn Walts from the roof of their home in Huger in Berkeley County.
Crews got reports at around 6:20 a.m. Sunday that the family was stranded due to severe flooding in the neighborhood.
A crew aboard an MH-65 Dolphin helicopter from Coast Guard Air Station Savannah, Georgia, was launched to rescue the two. Mueller and her daughter were taken to Mt. Pleasant Regional Airport. Officials say the woman and her child were not hurt.
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4:45 a.m.
Days of torrential rains kept much of South Carolina and its capital gripped by floodwaters early Monday as emergency responders promised renewed door-to-door searches for anyone still trapped after a weekend deluge and hundreds of rescues.
At least seven weather-related deaths have been blamed on the rainstorm that has lingered for days and been linked to an unusually deep low pressure system. The storm dumped so much rain on South Carolina and parts of surrounding states that even veteran weather experts called it unprecedented.
Police in Columbia, the capital city, said searchers would go door-to-door in the hardest-hit areas later Monday for any still seeking safety. And it could take weeks or longer to ensure the safety of numerous roads, highways and bridges rendered impassible by a historic rainstorm that pummeled South Carolina.
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10:45 p.m.
Police in the flooded South Carolina capital of Columbia say they and other emergency crews will continue with "concentrated search and rescue operations" early Monday.
Columbia Police Chief William Holbrook issued a statement saying the operations would check for any people in the city and nearby Richland County still needing evacuation from flooded areas.
He urged anyone still needing to get to safety to call 911.
"The operation will also include overall welfare checks," he said, adding crews will mark the front doors of homes checked with a fluorescent orange X once searched.
Anyone found is to be taken out on military vehicles to safety, he added.