Though Erin is not currently forecast to make landfall in the U.S., the East Coast could still get heavy rainfall associated with the storm, along with the northern Leeward Islands, the British Virgin Islands and southern and eastern Puerto Rico. Isolated flash flooding, landslides and mudslides are possible.

Brief: Tropical Storm Erin is likely to become a hurricane in the next 48 hours, according to the National Hurricane Center on Aug. 12.

Tropical Storm Erin is expected to become a hurricane later today, Aug. 15, and a Category 4 hurricane with maximum sustained winds of 130 mph over the weekend. A major hurricane is a Category 3 or stronger, with maximum sustained winds of at least 111 mph.