Debby has become a Category 1 hurricane as it keeps strengthening over the Gulf of Mexico, it sits about 70 miles south-southeast of Tallahassee as of early Monday. It was about 45 miles northwest of Cedar Key.
According to the latest update from the National Hurricane Center, Debby has maximum sustained winds of 80 miles per hour and is expected to strengthen rapidly before making a landfall in the Big Bend region.
Forecasters warned heavy amounts of rain from Debby could spawn catastrophic flooding in Florida, South Carolina and Georgia.
The storm was expected to make landfall around midday Monday in the Big Bend area of Florida, north of Tampa, the hurricane center said. A tornado watch also was in effect for parts of Florida and Georgia until 6 a.m. Monday.
Debby stayed over the open waters through the day on Sunday but impacts will continue, especially for the western side of Florida. The forward movement is slightly slower, at 10 mph.
Debby moved across western Cuba on Saturday as a depression before it reached the eastern Gulf of Mexico, where it reached tropical storm status, the NHC said.
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A hurricane warning was in effect for the Florida Gulf coast from the Suwannee River to the Ochlockonee River, while a hurricane watch was in effect for the Florida coast west of the Ochlockonee River to Indian Pass and the Florida coast east of the Suwannee River to Yankeetown.
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Heavy wind, rain and flooding were expected along the system's path, with maximum rainfall totals up to 15 inches possible in some areas, the NHC said.
"This rainfall will likely result in areas of locally considerable flash and urban flooding, with river flooding expected," the NHC said.