Outer rainbands from Hurricane Erin continue to strike Puerto Rico, the U.S. Virgin Islands, and other territories for hours.

Tropical Storm Erin was expected to strengthen into a hurricane on Friday as it approached the northeast Caribbean, prompting forecasters to warn of possible flooding and landslides.

The National Hurricane Center said steady to rapid strengthening is possible over the next day or two, allowing Erin to become a major hurricane (Category 3 or higher).

As of 11 AM AST Sunday, the National Hurricane Center reported that Erin’s center was located about 200 miles northwest of San Juan, Puerto Rico, and 240 miles east of Grand Turk Island. The hurricane is packing maximum sustained winds of 125 mph, making it a Category 3 storm. Its minimum central pressure is estimated at 946 millibars.

A significant rip current threat is expected in the week ahead from Florida to Massachusetts.