Hurricane Debby has developed in the Gulf of Mexico as the storm takes aim at Florida, where landfall is expected Monday.

Debby is already blasting flooding rain, damaging winds and storm surge to Florida ahead of its expected landfall in the Big Bend region. By mid-week, the storm is expected to dump extreme amounts of nearly 2 feet of rain on parts of Georgia and South Carolina.

The NHC is forecasting "potentially historic rainfall" across southeast Georgia and South Carolina through Friday, causing widespread flash flooding and life-threatening conditions.

The governors of Florida, Georgia and South Carolina have declared a state of emergency ahead of Debby and are urging residents to prepare for the multiple impacts the storm will bring.