Tuesday's live blog: Historic rainfall from Debby

Debby has slowed down and is bringing historic rainfall to parts of the Southeast. Catastrophic flooding is a concern.

Tropical Storm Debby continues to meander along the Atlantic Coast near the Georgia/South Carolina border. The storm's maximum sustained winds continue at 40 mph, but the tropical-storm-force winds are mainly occurring in rain bands well to the northeast and east of the storm's center.

Debby will continue move east at a snail speed of 3 mph overnight, taking the center offshore tonight and Wednesday before moving back onshore near South Carolina. While some gradual intensification is anticipated, it will be limited and Debby should remain at tropical storm status. Tune in tomorrow at 5 am ET for the next tropical update on the Breakfast Brief.

Charleston has now received up to a foot of rain and will see another few inches before midnight. Significant flooding is ongoing across the region, and a curfew will remain in place across the City until until at least 7:30 a.m. Wednesday, according to the mayor.

Below are rainfall totals measured at several stations across Georgia and South Carolina over the past 72 hours. Another 20 inches are possible for portions of northeast South Carolina and southeast North Carolina.

The latest update has Debby as a tropical storm with sustained winds of 40 mph, moving east at just 3 mph.

Meteorologist Irene Sans has the latest update on Debby here.

Debby is slowly meandering back into the Atlantic as a tropical storm. Winds are currently sustained at 40 mph and the center of the storm is just east of Savannah, Ga. While winds are forecasted to increase to 60 mph by Thursday morning, rain remains the big story as devastating flooding impacts the Georgia and Carolina coastlines.

Remember to turn around, don't drown when you see water on a road. Multiple vehicles are stuck due as flood waters rage.

The number of power outages is decreasing as Debby weakens. Currently, 90,844 homes and businesses are without power in Florida, and 10,875 are without power in Georgia. As Debby meanders out into the Atlantic, winds are expected to increase.

The highest winds are currently offshore of Georgia and South Carolina. Onshore winds can worsen coastal flooding. The peak surge is expected to be 2-4 feet from Altimaha Sound in Georgia to Cape Fear in North Carolina.

Isolated tornadoes are possible along the South Carolina and North Carolina coasts. Now is a good time to make sure your app alerts are turned on.

Currently 106,533 homes and businesses are without power in Florida, 15,826 without power in Georgia and 11,378 without power in South Carolina.

In the last 48 hours, parts of Georgia and South Carolina have picked up more than 10 inches of rainfall. With more rain on the way, more flooding is expected.

Weather & Radar's expert meteorologists have the latest forecast analysis on the flood threat at the link below.

More rain is on the way for parts of Georgia and South Carolina's Low Country. Isolated amounts of up to an additional 20 inches are possible through the weekend. Catastrophic flooding is possible and residents should be on alert for rising water.

Tropical Storm Debby is over the Georgia coast this morning and is expected to meander offshore later today and maintain a very slow speed. This will lead to potentially catastrophic flooding for parts of eastern Georgia, South Carolina and North Carolina.