San Juan, Aug 14 (AP) Tropical Storm Ernesto has battered the northeast Caribbean as it took aim at Puerto Rico, where officials closed schools, opened shelters and moved dozens of the US territory's endangered parrots into hurricane-proof rooms.

Ernesto is expected to become a hurricane as the centre of the storm moves just northeast of Puerto Rico on a path toward Bermuda. Forecasters on Tuesday issued a hurricane watch for the US and British Virgin Islands as well as the tiny Puerto Rican islands of Vieques and Culebra, which are popular with tourists.

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“Since there is some chance of Ernesto becoming a hurricane while it is near the Virgin Islands, a hurricane watch remains in effect,” the US National Hurricane Center in Miami said. Tropical storm warnings were in place for Puerto Rico, St Kitts, Nevis, Anguilla, St Martin, St Barts and St Maarten.

The storm's centre is expected to pass over the US Virgin Islands on Tuesday evening and pass just northeast and north of Puerto Rico late Tuesday and early Wednesday. It is then expected to move into open waters and be near Bermuda on Friday.

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Heavy rains began pelting Puerto Rico, and strong winds churned the ocean into a milky turquoise as people rushed to finish securing homes and businesses.

“I'm hoping it will go away quickly,” said José Rodríguez, 36, as he climbed on the roof of his uncle's wooden shack in the Afro-Caribbean community of Piñones on Puerto Rico's north coast to secure the business famous for its fried street food.

Ernesto was about 65 miles (105 kilometres) east-southeast of St Thomas late Tuesday afternoon. It had maximum sustained winds of 60 mph (95 kph) and was moving west-northwest at 18 mph (30 kph).

“We are going to have a lot of rain,” Puerto Rico Gov Pedro Pierluisi said as he urged people to be indoors by early Tuesday evening.

He activated the National Guard as crews across the island visited flood-prone areas and older residents as part of last-minute preparations. Meanwhile, Department of Natural Resources officials who work at breeding centres for the island's only remaining native parrot, the Puerto Rico Amazon, moved them indoors.

Ernesto Rodríguez with the National Weather Service warned that the storm's trajectory could change as it approaches Puerto Rico.

“We should not lower our guard,” he said.

As intermittent rain pelted Puerto Rico's northeast, residents in Piñones tried to squeeze in a couple more hours of work.

María Abreu, 25, prepared fried pastries stuffed with shrimp, crab, chicken and even iguana meat as she waited for customers.

“They always come. They buy them in case the power goes out,” she said.

Down the road, Juan Pizarro, 65, picked nearly 100 coconuts from palm trees swaying in the strong breeze. He had already secured his house.

“I'm ready for anything,” he said.

Forecasters have warned of waves of up to 20 feet (six metres), widespread flooding and possible landslides, with six to eight inches (15-20 centimetres) of rain forecast for Puerto Rico and the US Virgin Islands, and up to 10 inches (25 centimetres) in isolated areas. Puerto Rico has six reservoirs that already were overflowing before the storm.

Officials in Puerto Rico warned of widespread power outages given the crumbling electric grid, which crews are still repairing after Hurricane Maria razed it in September 2017 as a Category 4 storm.

Juan Saca, president of Luma Energy, a private company that operates the transmission and distribution of power in Puerto Rico, urged people to report blackouts: “Puerto Rico's electrical system is not sufficiently modernized to detect power outages”.

Outages also were a concern in the neighboring U.S. Virgin Islands for similar reasons, with blackouts reported on St Thomas and St John on Monday.

“Don't sleep on this,” said US Virgin Islands Gov Albert Bryan Jr, whose administration announced early Tuesday that it was closing all schools.

The US Federal Emergency Management Agency echoed those warnings, saying residents in Puerto Rico and the US Virgin Islands “should be prepared for extended power outages”.

Early Tuesday, Ernesto drenched the French Caribbean island of Guadeloupe, where officials closed several main roads and warned that the quality of potable water would be affected for several days. Meanwhile, the storm downed a couple of trees in Antigua, and knocked out power to most of the island. Ernesto also forced the cancellation of dozens of flights to and from Puerto Rico.

Ernesto is the fifth named storm of this year's Atlantic hurricane season.

The National Oceanic and Atmospheric Administration has predicted an above-average Atlantic hurricane season this year because of record warm ocean temperatures. It forecast 17 to 25 named storms, with four to seven major hurricanes of Category 3 or higher. (AP)

(The above story is verified and authored by Press Trust of India (PTI) staff. PTI, India’s premier news agency, employs more than 400 journalists and 500 stringers to cover almost every district and small town in India.. The views appearing in the above post do not reflect the opinions of LatestLY)