COLUMBIA, S.C. - In a hurricane season that doesn't seem to end, Tropical Storm Jeanne trekked toward South Carolina on Monday, sending ahead of it gusty winds, torrential rains and spinning off tornadoes.

Four people were injured and taken to a hospital from the Clarendon County town of Alcolu when a tornado destroyed two mobile homes, authorities said. A Head Start center also was damaged and there were several reports of minor injuries.

Jeanne, which crashed into Florida early Sunday as a Category 3 hurricane, was projected to cross the Piedmont between Columbia and Greenville early Tuesday as a tropical depression.

It would be the first time in more than a century that the tracks of four tropical systems crossed South Carolina in the same hurricane season. The last time that happened was in 1893.

A tropical storm warning was in effect from the South Santee River near Georgetown south to Flagler Beach, Fla. The National Weather Service in Charleston said winds of more than 39 mph could be expected along the coast.

A tornado watch was posted for 26 counties in the Midlands and eastern part of South Carolina through late Monday.

In Lexington County, just west of Columbia, Sheriff James Metts was offering shelter at his offices for those living in mobile homes who were worried about the possibility of tornadoes.

Residents would be able to stay in the department's squad room and later in the central traffic court, the sheriff said.

"Citizens who live in homes that can easily be damaged during severe weather events should seek shelter today with a friend or relative or drive to the sheriff's department," Metts said.

As the storm moved through Georgia early Monday gusts of 37 mph were recorded at Folly Beach and at Charleston's Waterfront Park. A gust of 34 mph was reported at the Charleston Coast Guard Station.

Schools were closed Monday in Beaufort County along the south coast because of the threat of heavy rains and tornadoes.

There were reports of trees down in Jasper County on the state's southern tip. Forecasters warned that gusty winds could topple trees elsewhere as well as in areas with ground still saturated from the passage of Hurricanes Frances and Ivan earlier this month.

During the Monday morning rush hour, traffic in Mount Pleasant crawled through torrential downpours from rain bands spun ashore by Jeanne.

But a few blocks away, the rain stopped and the skies brightened as vehicles with headlights on navigated around standing water on some streets and highways.

Forecasters said Jeanne could bring coastal flooding and beach erosion with as much as 4 inches of rain in the Upstate where forecasters warned there was a threat of urban flooding.

A flash flood watch was in effect for the entire state.

"The North Carolina mountains are going to bear the brunt of this again as far as rain," said Scott Krentz, a forecaster with the National Weather Service. "The I-85 corridor is more susceptible to tornadoes."

Along the coast, river flooding was reported on the Santee near Jamestown and was expected to continue through midweek.

The State Emergency Operations Center was monitoring the effects of still another storm in a busy season.

"Anytime these storms move toward the South Carolina inland, there is the opportunity for severe weather," said spokesman John Legare.

Forecasters warned the approaching storm could mean rip currents along the coast.

As Jeanne approached Florida on Saturday, one man drowned on the South Carolina coast near Garden City Beach when he was caught in a rip current, authorities said.

Jeanne would be the fourth tropical system to pass through the state this busy hurricane season.

Hurricane Charley and Tropical Storm Gaston made landfall within a few miles of each other in Charleston County last month. The remnants of Bonnie also tracked into the state after that storm made landfall on the Gulf of Mexico.

The fringes of Hurricanes Frances and Ivan also brought heavy rain, tornadoes and damage, though the center of those storms did not pass through South Carolina.

The last time the center of four tropical systems moved through South Carolina in the same season was 1893. That year a hurricane made landfall near Beaufort and a second near Charleston. A tropical storm tracked through the state after a Florida landfall while a second entered the state after making landfall in Mississippi.