SAN JUAN, Puerto Rico (AP) _ Tropical Storm Mindy weakened Saturday as it spun away from the Turks and Caicos Islands and the Bahamas, heading out to open sea.

The storm's maximum sustained winds have decreased to near 40 mph with higher gusts, according to the National Hurricane Center in Miami. Forecasters predicted little change in strength over the next 24 hours.

Rain from the storm battered Puerto Rico on Friday, leaving 30,000 homes without electricity. No injuries were reported.

The 13th named storm this season, Mindy was about 60 miles north-northwest of the Caribbean island of Grand Turk, and was heading out into the Atlantic away from inhabited islands, the hurricane center reported. Tropical storm force winds extended outward up to 145 miles from the storm's center.

The Bahamian government discontinued tropical storm warnings for the southeastern Bahamas and the Turks and Caicos Islands, but officials said marine interests should exercise caution until winds and seas subside.

A tropical cyclone becomes a tropical storm when sustained winds reach 39 mph.

The Atlantic hurricane season began June 1 and ends Nov. 30.