The tropical storm was just shy of hurricane power as it produced sustained winds of 70 mph and headed toward the Florida coast.
Tropical Storm Nicole neared hurricane strength early Wednesday as it headed toward Florida's Atlantic coast and the southeastern United States.
Previously a subtropical storm, Nicole has turned into a tropical storm and was all but assured to become a hurricane overnight, the National Hurricane Center said.
If Nicole becomes a hurricane, it would be the third in the Atlantic this month, tying the 2001 season for the most Atlantic hurricanes in November, according to Phil Klotzbach, an atmospheric science researcher at Colorado State University.