At an 11:30 a.m. news conference in Pinellas County, county Administrator Mark Woodard urged people who don't feel safe in their homes to take action in the next hour.
If you can make it to a shelter or safe spot in the next hour, "Go. Go now," Woodard said. If not, it's time to find a space spot where you are and hunker down.
Tropical storm-force winds are expected to start at 2 p.m. Hurricane-force winds, with gusts up to 115 mph, will start about 7 p.m. and last for eight hours. Storm surge of 5 to 8 feet is projected to start about 6 p.m. and last for 12 hours.