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CNN  — 

Tropical Storm Florence’s relentless rain is flooding parts of the Carolinas and promises even more for days, officials said Saturday, a day after it landed as a hurricane and left at least 13 people dead – including a baby.

The issues prompted North Carolina to tell drivers coming down Interstate 95 from Virginia to go around – the entire state. The state wants motorists to go west to Tennessee and take Interstate 75 into Georgia.

“The one thing I want to prevent is thousands of people stranded on our interstates or US routes,” said state Transportation Secretary Jim Trogdan.

A 73-mile stretch of the highway closed Saturday because of flooding and an accident involving a tractor-trailer.

Officials warned the flooding was only just starting.

“The flood danger from this storm is more immediate today than when it … made landfall 24 hours ago,” North Carolina Gov. Roy Cooper said Saturday morning. “We face walls of water at our coasts, along our rivers, across our farmland, in our cities and in our towns.”

The storm’s center is crawling over South Carolina, but many of its main rain bands still are over already-saturated North Carolina – setting up what may be days of flooding for some communities.

Serious flooding is expected throughout the two states, and some rivers may not crest for another three to five days.

Florence crashed ashore Friday morning in North Carolina as a Category 1 hurricane, and it has wiped out power to about 796,000 customers in that state and South Carolina.

It has trapped people in flooded homes, with citizen swift-water rescue teams from out of state joining local emergency professionals to try to bring them to safety.

Key developments

• Florence’s location: By 5 p.m. Saturday, Florence’s center was 60 miles west of Myrtle Beach, South Carolina, with maximum sustained winds of 45 mph. It was moving west at 2 mph, the National Weather Service said. The storm was expected to dump rain in the Carolinas through the weekend.

• Winds: Sustained winds of at least 39 mph can be felt as far away as 150 miles from the center of Florence.

Looting arrests: Wilmington police arrested five people who allegedly were looting a Dollar General store, authorities said. Another person was arrested after they allegedly looted an Exxon gas station and convenience store in Wilmington on Saturday evening, according to the New Hanover County Sheriff’s Office.

• No electricity: About 760,000 customers are without power in North Carolina, emergency officials said. In South Carolina, some 36,000 customers are without power, officials said.

• Trapped and rescued: In New Bern, North Carolina, officials tweeted Saturday afternoon that water rescues had been completed. In nearby Onslow County, three US Coast Guard helicopters were helping with rescue missions, officials said.

• Much flooding to come: By storm’s end, up to 40 inches of rain will have fallen in parts of North Carolina and far northeastern South Carolina, the National Hurricane Center said. Some other parts of South Carolina could see rainfall totals of up to 15 inches, forecasters said. Florence “will produce catastrophic flooding over parts of North and South Carolina for some time,” NOAA official Steve Goldstein said.

• Record rainfall: Florence has dumped more than 30 inches of rain in Swansboro, North Carolina, as of Saturday morning, breaking the record for rainfall from a tropical system in the state. The previous record of 24.06 inches was set during Hurricane Floyd in 1999.