Florence has become even stronger over the Atlantic Ocean. Forecasters at the National Hurricane Center say Florence rapidly intensified Monday morning to a potentially catastrophic Category 4 hurricane with maximum sustained winds near 130 mph.
Florence had reached Category 3 strength earlier Monday, but data from hurricane hunter aircraft indicate the storm is quickly getting stronger as it moves over warm Atlantic waters.
Forecasters say the hurricane's strength is expected to fluctuate but it still will be a dangerous storm by the time it reaches the coast of South Carolina or North Carolina on Thursday.
Track the storm and learn more on ABC 11.