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Hurricane Larry Is Set to Bring Dangerous Surf to East Coast

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Hurricane Larry churned across the central Atlantic on Monday and was expected to cause life-threatening surf conditions and rip currents along the East Coast of the United States later this week, according to the National Hurricane Center.

As of Monday morning, Larry was about 1,000 miles southeast of Bermuda and moving northwest at 12 miles per hour, the Hurricane Center said. The Category 3 storm had maximum sustained winds of 120 m.p.h.

Although there were no coastal watches or warnings in effect on Monday, swells generated by Larry were already affecting the Lesser Antilles, the crescent of islands in the eastern Caribbean that curves from the Virgin Islands to Grenada. The swells were expected to spread west by Tuesday and could reach the United States and Canada by the middle of the week, the Hurricane Center said.

Larry, which became the 12th named storm of the 2021 Atlantic hurricane season on Wednesday, intensified to a Category 3 hurricane on Friday, when Dennis Feltgen, a meteorologist and spokesman for the Hurricane Center in Miami, said it was “not forecast to strike the United States.”

Mr. Feltgen said this hurricane season, as expected, had been an active one, but that there was “a long way to go.” The peak of the season runs from mid-August to late October, and maximum activity takes place in early to mid-September, he said.

The quick succession of named storms might make it seem as if the Atlantic is spinning them up like a fast-paced conveyor belt, but their formation coincides with the peak of hurricane season.

The links between hurricanes and climate change are becoming more apparent. A warming planet can expect stronger hurricanes over time, and a higher incidence of the most powerful storms — though the overall number of storms could drop, because factors like stronger wind shear could keep weaker storms from forming.

Hurricanes are also becoming wetter because of more water vapor in the warmer atmosphere; scientists have suggested storms like Hurricane Harvey in 2017 produced far more rain than they would have without the human effects on climate. Also, rising sea levels are contributing to higher storm surge — the most destructive element of tropical cyclones.

A major United Nations climate report released in August warned that nations have delayed curbing their fossil-fuel emissions for so long that they can no longer stop global warming from intensifying over the next 30 years, leading to more frequent life-threatening heat waves and severe droughts. Tropical cyclones have likely become more intense over the past 40 years, the report said, a shift that cannot be explained by natural variability alone.

Ana became the first named storm of the season on May 23, making this the seventh year in a row that a named storm developed in the Atlantic before the official start of the season on June 1.

In May, scientists with the National Oceanic and Atmospheric Administration forecast that there would be 13 to 20 named storms this year, six to 10 of which would be hurricanes, including three to five major hurricanes of Category 3 or higher in the Atlantic.

NOAA updated its forecast in early August, predicting 15 to 21 named storms, including seven to 10 hurricanes, by the end of the season on Nov. 30.

Last year, there were 30 named storms, including six major hurricanes, forcing meteorologists to exhaust the alphabet for the second time and move to using Greek letters.

It was the most named storms on record, surpassing the 28 from 2005, and the second-highest number of hurricanes.

Eduardo Medina, Christopher Mele and Derrick Bryson Taylor contributed reporting.

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