Hurricane Irma Caribbean girds for stormy weather threat

Hurricane Irma surged to a dangerous Category Four storm Monday as it churned toward the Leeward islands, sparking alarm and alerts from the Caribbean to Florida, which declared an emergency.

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This satellite image obtained from the National Oceanic and Atmospheric Administration (NOAA) shows Hurricane Irma at 1145 UTC on September 6, 2017 play

This satellite image obtained from the National Oceanic and Atmospheric Administration (NOAA) shows Hurricane Irma at 1145 UTC on September 6, 2017

(NOAA/RAMMB/AFP)
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Hurricane Irma surged to a dangerous Category Four storm Monday as it churned toward the Leeward islands, sparking alarm and alerts from the Caribbean to Florida, which declared an emergency.

The National Hurricane Center said at 0001 GMT (Tuesday) that the storm was packing top sustained winds of 140 mph (220 km/h). "Additional strengthening is forecast during the next 48 hours," the NHC warned.

Its center was about 450 miles (725 kilometers) east of the Leeward islands, grinding westward at 13 miles per hour (20 kilometers per hour) the NHC said.

"On the forecast track, the center of Irma will move near or over portions of the northern Leeward Islands Tuesday night and early Wednesday."

A Category Four storm on the Saffir Simpson scale is capable of doing widespread major structural and infrastructure damage; it can easily tear off roofing, shatter windows, uproot palm trees and turn them into projectiles that can kill people.

Category four strength was the maximum attained by Hurricane Harvey, which recently devastated parts of Texas and Louisiana.

Irma is projected to reach the Leeward Islands of the Lesser Antilles chain by late Tuesday or early Wednesday, bringing water levels up to 9 feet (3 meters) above normal levels, rainfall of up to 10 inches (25 centimeters) in areas, and "large and destructive waves."

In Puerto Rico, a US territory of 3.5 million, Governor Ricardo Rossello activated the National Guard and announced the opening of storm shelters able to house up to 62,000 people. Schools will be closed Tuesday.

US carrier in position

A US aircraft carrier carrying a field hospital and dozens of aircraft able to conduct rescue or supply missions has been positioned protectively in the area, according to Alejandro de la Campa of the Caribbean division of the US Federal Emergency Management Agency (FEMA). Local press identified the carrier as the USS Kearsarge.

San Juan Mayor Carmen Yulin Cruz Soto ordered 900 municipal employees -- police, emergency personnel, and aid and social workers -- to report for rotating 12-hour shifts.

Even if that island is spared a direct hit, the mayor said, three days of pounding rain will do heavy damage.

Irma's precise path remains unclear, but several projections have it passing over the Dominican Republic, Haiti and Cuba before turning north toward Florida and then possibly swinging up the US East Coast.

Scrambling amid the uncertainty, Florida declared a state of emergency to facilitate preparations.

For now, hurricane warnings have been issued for the islands of Antigua, Barbuda, Anguilla, Montserrat, St. Kitts and Nevis, St. Martin, Sint Maarten, St. Barthelemy, Saba and St. Eustatius. A warning means hurricane conditions are expected in the next 36 hours.

Anne Laubies, prefect of Saint Barthelemy warned the hurricane posed the greatest danger the island had faced in 20 years with more people endangered in flood-prone areas because of a rise in population.

Long queues of people rushed to get batteries and bottled water, while many cut trees around their dwellings and sought to tie down objects and caulk their windows.

Hurricane watches -- meaning hurricane conditions are possible within 48 hours -- have been issued for some of the more populous parts of the Caribbean, including Puerto Rico; as well as Guadeloupe and the US and British Virgin Islands.

Irma is expected to produce total rainfall accumulations of 3 to 6 inches (7.6-15 cm) across the Leeward Islands, with isolated maximum amounts of 10 inches (25 cm) across the northern Leeward Islands. These rainfall amounts may cause life-threatening flash floods and mudslides," the NHC said.

The Haitian authorities issued an early alert for a storm that said could hit them for three days, with potential for landslides and flooding.

On the French island of Guadeloupe, people have been stocking up on provisions, leaving some store shelves empty.

Schools will be closed Tuesday and Wednesday, and hospitals have been asked to stock 72 hours supplies of medicines, food and drinking water, according to authorities, who are also evacuating low-lying areas.

Authorities elsewhere in the region were alerting residents to the location of storm shelters, and urging them to closely monitor the developing storm.

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