Tallahassee - Tropical Storm Debby weakened as it drifted eastward over Florida on Tuesday, dumping more rain on flooded areas and sending thousands of people fleeing from rising rivers.
After stalling in the Gulf of Mexico, the storm was finally moving but was expected to take two more days to finish its wet slog across Florida.
Emergency managers in Pasco County on Florida's central Gulf Coast ordered a mandatory evacuation for 14 000 to 20 000 people living between the Anclote and Pithlachascotee Rivers. The Anclote rose from 2.7m before Debby's approach to more than 8.2m on Tuesday, well above major flood level, Pasco County spokesperson Eric Keaton said.
Water was ankle-deep to head-high in the evacuation area. Emergency crews had to use boats to reach stranded residents in some areas, and 106 Pasco County homes had been damaged.
“The city has always been prepared for a water event, but I think Mother Nature woke us up as to how fast she can operate,” Keaton said.
The storm was piling up coastal waters and pushing them inland, preventing the rainwater from draining out to sea.
Nearly 51cm of rain has fallen in two days on Wakulla County, a Gulf Coast county famed for its natural springs. Roads were under water in many parts of the surrounding “Big Bend” area where the Florida Panhandle meets the peninsula.
Parts of Interstate 10 were closed between the capital, Tallahassee, and the Atlantic coast city of Jacksonville. The storm left 29 000 people without power across the central and northern parts of the state, emergency managers said.
Forecasters at the National Hurricane Centre said Debby could bring another 10cm to 20cm of rain and possibly tornadoes to north Florida and southeast Georgia in the next two days.
Debby's top winds weakened to 65km/h, just over the threshold to remain a tropical storm. It was expected to weaken further as the Centre moved ashore, but could strengthen back into a tropical storm as it crossed into the Atlantic Ocean, the forecasters said.
The Centre of circulation was still in the Gulf of Mexico, about 55km west-northwest of Cedar Key, Florida. But Debby was a large and ragged storm and most of the thunderstorms and rain were northeast of the Centre, already over Florida.
Tropical storm warnings were in effect for much of Florida's Gulf coast and could be extended inland as the storm moves slowly east over the state in the next few days.
Debby spawned twisters that killed a woman, badly injured a child and wrecked homes in central Florida in rural Highlands County on Sunday. Florida's coastal Pinellas County was also hit hard, with flooding in some areas and at least 20 houses with roofs that were partially or fully blown off during a tornado-like storm.
President Barack Obama called Florida Governor Rick Scott from Air Force One on Tuesday “to ensure the state had no unmet needs” as it responds to the flooding, White House spokesperson Jay Carney said.
Obama expressed condolences for the loss of life and damage to homes, and Carney said federal authorities “stood ready to provide additional assistance if necessary”.
Scott declared a state of emergency on Monday and ordered all state agencies, including the Florida National Guard, to provide any necessary assistance requested by local governments.
“Because of the broad impact of Tropical Storm Debby, virtually every county in Florida could be affected,” Scott said.
Flash flood warnings were in effect for many areas and emergency managers cautioned that inland flooding was linked to more than half the deaths from tropical cyclones in the United States over the last 30 years.
Debby was the first tropical storm of 2012 to form in the Gulf of Mexico. The storm idled about a quarter of US offshore oil and natural gas production in the Gulf of Mexico during the weekend, based on figures issued by US offshore regulators.
Big offshore drillers began returning staff to offshore platforms after the storm veered away from the Gulf oil patch on Monday, and production had restarted on Tuesday. - Reuters