Erika unleashed heavy rains in Dominica, leaving at least four people dead. The National Hurricane Center forecasts that Erika could threaten South Florida by Monday morning.
The tropical cyclone is forecast to strengthen as it moves west toward the East Coast of the United States. Erika is expected to be just off the Florida coast by early Monday.
The storm, downgraded from a Category 3 hurricane to a tropical storm over the course of Saturday, is expected to continue to lose steam as it heads toward the the eastern Caribbean.
The storm killed at least 6 people in Taiwan and has thrust millions into the dark. Some 1.4 million homes in China's Fujian province were evacuated ahead of its landfall.
Meteorologists say this year's hurricane season will be quieter than usual. But if a Category 3 or higher hit the U.S., it would be the first time since 2005, one of the worst years on record.