MEXICO CITY (AP) — Hurricane Agatha, the season’s first, headed for a stretch of tourist beaches and fishing towns on Mexico’s southern Pacific coast Monday amid warnings of dangerous storm surge and flooding from heavy rains.

After forming on Sunday, Agatha quickly gained power, and it was predicted to make landfall as a strong Category 2 hurricane Monday afternoon or evening, the US National Hurricane Center said.

It was moving toward the area near Puerto Escondido and Puerto Angel in the southern state of Oaxaca — a region that includes the laid-back tourist resorts of Huatulco, Mazunte and Zipolite.

The hurricane centre said Agatha could “bring an extremely dangerous storm surge and life-threatening winds”.

Early Monday, Agatha had maximum sustained winds of 110 mph (175 kph) — just one mph under the threshold for a Category 3, the hurricane centre said. The storm’s centre was about 65 miles (110 kilometres) southwest of Puerto Angel and heading to the northeast at six mph (nine kph).

Little change in strength was expected before the storm makes landfall, according to the hurricane centre. A hurricane warning was in effect between the port of Salina Cruz and the Lagunas de Chacahua.

The civil defence office in Oaxaca published photos Sunday of fishermen hauling their boats up on beaches to protect them from the storm as the initial bands moved over land.

Municipal authorities in Huatulco ordered “the absolute closure” of all the resort’s beaches and its famous seven bays, many of which are reachable only by boat. They also closed local schools and began setting up emergency storm shelters.

To the west in Zipolite, long known for its clothing-optional beach and bohemian vibe, personnel at the small Casa Kalmar hotel gathered up outdoor furniture and put up wooden storm shutters to prevent strong winds from blowing out glass windows and doors.

“The biggest worry here is the wind,” hotel manager Silvia Ranfagni said.

With only one guest — and plenty of cancellations due to the hurricane — Ranfagni planned to ride out Agatha at the property, which is three or four blocks from the beach.

“I’m going to shut myself in here with my animals,” she said, referring to her dog and cats.

The government’s Mexican Turtle Center — a former slaughterhouse turned conservation centre in Mazunte — announced it was closed to visitors until further notice because of the hurricane.

The US National Hurricane Center said the storm was expected to drop 10 to 16 inches (250 to 400 millimetres) of rain on parts of Oaxaca, with isolated maximums of 20 inches (500 millimetres), posing the threat of flash floods and mudslides.