SAN JUAN, Puerto Rico (AP) — Heavy rains are drenching the eastern Caribbean as newly formed Tropical Storm Isaias passes south of Puerto Rico and heads for Hispaniola carrying the threat of flooding and landslides.

The U.S. National Hurricane Center in Miami says the storm is expected to cross the Dominican Republican and Haiti on Thursday while following a path that could take it to the U.S. mainland by the weekend.

Multiple power outages have been reported across Puerto Rico on Wednesday night, with at least 96,000 customers without electricity.

Isaias had maximum sustained winds of 50 mph (85 kph) late Wednesday.