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El Niño may help ‘blow off’ 2017 U.S. hurricane countEl Niño may help ‘blow off’ 2017 U.S. hurricane count

Fewer hurricanes may reach East Coast landfalls this year due to El Niño winds from the West.

April 12, 2017

2 Min Read
HURRICANE REPORT: The projected U.S. hurricane count is down two from last year.AccuWeather

Good news on the weather front for East Coast agriculture. After a stormy hurricane season in 2016, AccuWeather experts expect 2017 to have fewer storms and hurricanes.

AccuWeather meteorologists are predicting a below-normal hurricane season this year, as a potential El Niño may limit storm development. They expect 10 named storms, five of which are likely to become hurricanes and three of which may become major hurricanes.

The 2017 season, which runs from June 1 to Nov. 30, follows the deadliest in over 10 years for the Atlantic basin. Last season spawned 15 named storms, seven of which were hurricanes. It was also the costliest Atlantic hurricane season since 2012.

Looking for El Niño effect
“The big factor is that we now believe El Niño will come on board some time during the summer and will continue all the way through the rest of the hurricane season,” says meteorologist Dan Kottlowski. El Niño is characterized by warmer-than-normal ocean water temperatures in the Pacific Ocean near the equator. It typically causes episodes of strong westerly winds in the tropical Atlantic, which inhibit storm development. “That's the No. 1 reason we're going with just below normal [storm frequency],” he adds.

While the transition is likely, it's too soon to tell how quickly El Niño will develop and how strong it will become. If the El Niño pattern becomes moderate in the late summer and fall — meaning episodes of these winds are more frequent — the hurricane season could end early.

Despite these uncertainties, two to four tropical impacts are forecast for the United States. A close eye is being kept on coastal sections of the northern Gulf of Mexico, including Florida, and the Southeast coast for development, reports Kottlowski.

Years in which the climatic pattern was similar to the current pattern suggest these regions may be particularly vulnerable to impacts. Deep, warm water and high sea surface temperatures over the Gulf of Mexico and Caribbean also threaten to support at least one high-impact hurricane similar to Joaquin in 2015 and Matthew in 2016.

Source: AccuWeather




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