MIAMI >> Carlos has regained strength and became a hurricane again off the south-central coast of Mexico in the Pacific Ocean.

Forecasters at the National Hurricane Center in Miami said Monday afternoon that the storm had become a hurricane again after a downgrade Sunday.

The storm’s center is about 85 miles southwest of Lazaro Cardenas, Mexico, and 175 miles  southeast of Manzanillo, Mexico.

It has maximum sustained winds or 75 mph  and is moving west-northwest at 6 mph.

A hurricane watch is in effect for west of Punta San Telmo to Playa Perula. A tropical storm warning is in effect for Punta San Telmo to Lazaro Cardenas.

Forecasters predicted rain and swells across several Mexican states.

Officials ordered schools closed Monday and readied shelters along Mexico’s southwestern coast as Carlos battered beaches with high waves and strong wind as it swirled just offshore.

Beaches in Acapulco were much less busy Sunday than usual for a weekend as six-foot waves washed away more than a dozen small palm-frond huts and strong winds knocked down some trees. Workers cleared away hammocks and lounge chairs from beachside hotels and cafes.

Jonathan Capote, spokesman for Guerrero state’s Civil Protection agency, said no serious damage had been reported and only one injury was known, someone who fell from a fence.

“Aside from a few fallen billboards and trees, we haven’t had any damage,” he said.

Out in the sea, two surfers braved the dangerous conditions to ride the big crashing waves.

Sergio Pina, a business risk manager from Mexico City, stood among a group of spectators watching the wild weather.

“It’s impressive. It’s very strong,” he said. “There are launches turned over, fallen cables.”

Officials said schools would be closed Monday and urged residents to stay inside their homes. State authorities said 507 shelters, including 98 in Acapulco, had been prepared along Guerrero’s coast.

Coastal areas stretching north from Acapulco also were taking precautions and beaches there were less busy than usual.

Carlos, on Saturday, briefly became the third hurricane of the 2015 eastern Pacific season. Forecasters said it still threatened to bring heavy rains that could cause life-threatening flash floods and mudslides.

Rain accumulations of 6 inches to 10 inches were possible in southwestern Mexico, with a chance for up to 15 inches in some areas, according to the hurricane center.