Tropical Storm Marco buffeted Florida's Gulf Coast Thursday, cutting power to at least 14,000 people, closing schools and shutting down a bridge with heavy rain and wind gusts up to 70 mph.

Bermuda, meanwhile, braced for Hurricane Lili, upgraded from tropical storm status Wednesday as its winds neared 75 mph. At 9 a.m., Lili was centered about 260 miles east-southeast of Bermuda.At 8 a.m. Marco was just south of St. Petersburg. The system was heading north-northwest at 9 mph, and forecasters said they expected it to maintain a northerly course during the next 24 hours.

They said it was uncertain where and when Marco would move inland.

The Sunshine Skyway Bridge in the Tampa Bay area was shut down by the winds, the Florida Highway Patrol said. Power lines were toppled and schools were closed in Manatee and Sarasota counties.

Marco was expected to push tides 1 to 3 feet above normal, scour the sandy beaches and dump 3 or more inches of rain.