Hurricane Beryl made landfall on Mexico's coast near the resort of Tulum as a Category 2 storm early Friday, whipping trees and knocking out power as it came ashore after leaving a trail of destruction across the eastern Caribbean.

The US National Hurricane Centre said that Beryl is expected to rapidly weaken to a tropical storm as it crosses over the Yucatan Peninsula before it re-emerges into the Gulf of Mexico and likely regains hurricane strength.

Once in the warm waters of the Gulf, Beryl is forecast to head toward northern Mexico near the Texas border, an area had already been soaked by Tropical Storm Alberto just a couple of weeks ago.

Once the earliest storm to develop into a Category 5 hurricane in the Atlantic, Beryl spread destruction in Jamaica, St. Vincent and the Grenadines and Barbados in recent days.

Shortly after landfall, Beryl's maximum windspeeds had decreased to 100 mph (160 kph), according to the US Hurricane Centre.

Mexican authorities had moved some tourists and residents out, of low-lying areas around the Yucatan peninsula prior to landfall, but tens of thousands remained to tough out the 100 mph (160 kph) winds and expected storm surge. Much of the area around Tulum is just a few yards (metres) above sea level.

The city was plunged into darkness when the storm knocked out power as it came ashore. Screeching winds set off car alarms across the town.

Once a sleepy, laid-back village, in recent years Tulum has boomed with unrestrained development and now has about 50,000 permanent inhabitants and at least as many tourists on an average day. The resort now has its own international airport.

Early Friday, the storm's center was about 15 miles (25 kilometers) north-northwest of Tulum and was moving west-northwest at 15 mph (about 24 kph), the hurricane center said.

On Friday, Beryl was expected to weaken as it crossed over the Yucatan peninsula and re-emerge in the Gulf of Mexico, where the surprisingly resilient storm could once again become a hurricane and make a second landfall around Mexico's border with Texas next week.

As the wind began gusting over Tulum's beaches, four-wheelers with megaphones rolled along the sand telling people to leave. Tourists snapped photos of the growing surf, but military personnel urged them to leave.

Authorities around the Yucatan peninsula have prepared shelters, evacuated some small outlying coastal communities and even moved sea turtle eggs off beaches threatened by storm surge. In Tulum, authorities shut things down and evacuated beachside hotels.

Tourists were also taking precautions. Lara Marsters, 54, a therapist visiting Tulum from Boise, Idaho, said “this morning we woke up and just filled all of our empty water bottles with water from the tap and put it in the freezer … so we will have water to flush the toilet.”

“We expect that the power will go out,” Marsters said. “We're going to hunker down and stay safe.”

But once Beryl re-emerges into the Gulf of Mexico a day later, forecasters say it is again expected to build to hurricane strength and could hit right around the Mexico-U.S. border, at Matamoros. That area was already soaked in June by Tropical Storm Alberto.

Velázquez said temporary storm shelters were in place at schools and hotels but efforts to evacuate a few highly exposed villages — like Punta Allen, which sits on a narrow spit of land south of Tulum — and Mahahual, further south — had been only partially successful.

Earlier, Beryl wreaked havoc in the Caribbean. The hurricane damaged or destroyed 95% of homes on a pair of islands in St. Vincent and the Grenadines, jumbled fishing boats in Barbados and ripped off roofs and knocked out electricity in Jamaica.

On Union Island, part of St. Vincent and the Grenadines, a man who identified himself as Captain Baga described the storm's impact, including how he had filled two 2,000-gallon rubber water tanks in preparation.

“I strapped them down securely on six sides; and I watched the wind lift those tanks and take them away -- filled with water," he said Thursday. “I'm a sailor and I never believed wind could do what I saw it do, if anyone (had) ever told me wind could do that, I would have told them they lie!”

The island was littered with debris from homes that looked like they had exploded.

Girlyn Williams and Jeremiah Forde were trying to recover what they could Thursday around their home, where only a concrete foundation remained standing.

They had run from room to room during the storm as different sections of their house were being destroyed. Eventually, they hid in a small space created by a rubber water tank that got wedged between the house and a concrete tank. Williams cut her leg in the scramble and needed six stitches.

Three people were reported killed in Grenada and Carriacou and another in St. Vincent and the Grenadines, officials said. Three other deaths were reported in northern Venezuela, where four people were missing, officials said.

In the Pacific, Tropical Depression Aletta was located about 300 miles (485 kilometers) south-southeast of the southern tip of Baja California with maximum sustained winds of 35 mph (55 kph), and was forecast to head away from land and dissipate by the weekend.