Tropical Storm Debby was back over water and tracking very slowly toward the South Carolina coast on Wednesday.

The National Hurricane Center is forecasting Debby to make a second landfall in South Carolina by tonight or early Thursday.

Then the storm will move a bit faster across the Carolinas and into the mid-Atlantic region on Thursday and Friday.

Debby has been blamed for six deaths so far across the Southeast U.S., according to The Associated Press.

As of 7 a.m. CDT Wednesday, Tropical Storm Debby was located about 50 miles southeast of Charleston, S.C., and was tracking to the northeast at 4 mph.

Debby had 45 mph winds, making it a minimal tropical storm. The hurricane center said Debby could get a bit stronger before it moves onshore tonight or Thursday. Then it is expected to weaken and merge with a front on Friday.

The biggest impact from Debby continues to be rain and flooding.

The hurricane center said Debby could bring “an additional 3 to 9 inches of rainfall with locally higher amounts, leading to maximum storm total amounts as high as 25 inches in South Carolina and 15 inches in southeast North Carolina, broadening the area of considerable flooding across portions of South Carolina and southeast North Carolina through Friday.”

In addition, southeast Georgia could pick up another inch or two, for a total of nearly 15 inches of rain in places.

The hurricane center said 3 to 7 inches of rain will be possible from the Piedmont of South Carolina into parts of Virginia, and areas from Maryland to upstate New York and Vermont could get 2 to 4 inches.

All that rain could lead to what forecasters called “considerable” flash flooding.

The Associated Press reported that Debby dropped up to a foot of rain along the coast between Charleston, S.C., and Savannah, Ga., in just over 24 hours, causing flash flooding and closing dozens of roads in the area.

Debby made its first landfall on Monday on Florida’s Big Bend region as a Category 1 hurricane with 80 mph winds. It moved inland in Florida and has spent all its time since dousing north Florida, Georgia and the Carolinas with flooding rain.

Here are the watches and warnings for Debby as of Wednesday morning:

* A Storm Surge Watch is in effect from north of the South Santee River, S.C., to Cape Fear, N.C.

* A Tropical Storm Warning is in effect from north of the Savannah River to Surf City, N.C.

* A Tropical Storm Watch is in effect from north of Surf City, N.C., to Beaufort Inlet, N.C.