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Irma set to be the most expensive storm in US history

Boston - Irma began to lash southern Florida with hurricane-force winds as the huge storm strengthened, threatening severe damage in Tampa and other cities facing the Gulf of Mexico in what could end up being the most expensive storm in US history.

With maximum sustained winds of 209 km/h, the deadly storm is expected to strike the lower Florida Keys “in the next few hours” and then move near or over the southwestern coast of the Florida Peninsula later in the day and into the evening, the US National Hurricane Center said in an advisory on Sunday. Irma again strengthened to a Category 4 storm as it moved closer to the state after swiping Cuba.

President Donald Trump discussed round-the-clock preparations now under way with his Cabinet, calling Irma “a storm of enormous destructive power.” 

Rob Miller, a meteorologist at AccuWeather in State College, Pennsylvania, said a track “near or just to the west is almost, if not, a worst-case scenario for Tampa Bay,” adding that “it shoves all the water into Tampa Bay and then shoves it right into downtown.”

The storm has left at least 22 people dead and thousands homeless across the Caribbean, and threatens to rack up as much as $200bn in damages. Irma’s anticipated northern turn has begun, raising the threat to Florida’s west coast while potentially sparing Miami a direct hit. Irma was about 64km south-southeast of Key West, according to the latest NHC advisory, with hurricane-force winds now extending up to 129km from the center.

“A trajectory west of previous forecasts will still mean hurricane-force winds for the entire southern portion of Florida from coast to coast,” said Shunondo Basu, meteorologist and natgas analyst at Bloomberg New Energy Finance.

The storm’s eyewall may spread over the Lower Keys as soon as 07:00 local time, the National Weather Service said on Sunday in a tweet. “Everyone in the Florida Keys, it’s time to hunker down. The worst winds are yet to come,” the NWS said.

Storm damage may worsen if Irma drifts along Florida’s west coast without coming ashore and weakening, said David Streit, a meteorologist at Commodity Weather Group LLC in Bethesda, Maryland. On its current path, Irma may wipe out as much as 20% of the citrus crop in the world’s second-largest orange juice producer.

Some 6.5 million residents have been ordered to evacuate, Florida Governor Rick Scott said at a press briefing late Saturday. Almost 400 shelters are open in counties in the path of the storm. The Tampa-St. Petersburg-Clearwater area is home to about 3 million people.

“We’re as prepared as you can be for such an event, that I can say,” Trump said during the cabinet meeting at the Camp David presidential retreat in Maryland, according to video footage posted on Twitter. “We’re in constant communications with all the governors, with the state and local officials.”

Irma is one of two tropical systems churning in the region. Jose, the third major hurricane of the 2017 season, is passing well to the northeast of Puerto Rico with maximum sustained winds of 209km/h and is expected to linger over the western Atlantic for several days. Katia broke apart after making landfall in Mexico.

The country was struck by a powerful earthquake on Friday, shaking buildings in the capital and triggering a tsunami warning. Damage from Irma could top $120 billion in Florida, with other economic losses pushing the price tag as high as $200bn, said Chuck Watson, a Savannah, Georgia-based disaster modeler with Enki Research. A strike near Tampa could cause as much as $250bn in damage.

“That is an outside possibility and requires the storm to hit the right place, at the right time, at the right angle,” Watson said. “But it’s a 1 in 20 chance right now.”

Total losses from Hurricane Katrina reached $160bn in 2017 dollars after it slammed into New Orleans in 2005.

Preliminary estimates show losses across the Caribbean nearing $10bn, CoreLogic, a risk modeler in Irvine, California, said. About 8.5 million properties in Florida may be damaged by Irma’s winds. Another 3.5 million are vulnerable to storm surge, which could reach 4,6m, inundating areas from Captiva to Cape Sable. In Cuba, Irma ripped roofs off houses and flooded hundreds of miles of coastline as it raked the northern coast before heading toward Florida, the Associated Press reported.

“In southwest Florida, the storm surge comes after the strongest winds,” Scott said. “Do not think the storm is over when the wind slows down. Local officials will let you know when it is safe. The storm surge will rush in and it could kill you.”

The governor also warned of the potential for hurricane-force winds extending north into the Florida panhandle, and said tornadoes are possible in south and central Florida on Sunday. The storm may move inland over the panhandle and southwestern Georgia on Monday afternoon, the NHC said.

Prior to that, “While weakening is forecast, Irma is expected to remain a powerful hurricane as it moves through the Florida Keys and and near the west coast of Florida,” the NHC said. A wind gust of 142km/h had already been recorded at Alligator Reef Light in the Keys, the NHC said.

More than 4.4 million customers of the state’s two largest utilities may lose power, according to company forecasts Saturday. Crews from as far as Massachusetts and California are in state to aid restoration efforts. Florida Power & Light Co. said it now has 16,000 repair staff in the state, triple the normal amount. Irma may also curb natural gas demand in one of the largest U.S. markets.

Irma comes just two weeks after Harvey smashed ashore in Texas, knocking offline almost a quarter of U.S. oil refining capacity and causing widespread power outages and flooding.

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