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Weather Journal

with Kevin Myatt

It's El Nino!

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As of today, government climatologists have officially declared that an El Nino has developed in the Pacific. El Nino, the warming of equatorial Pacific waters, often has a tendency to increase precipitation in the southern half of the United States during the cooler months. Effects on temperature and winter snowfall vary depending on its strength and the interplay with other climatic oscillations.

As National Weather Service meteorologist Stephen Keighton noted at Tuesday night's Town Hall Meeting in Roanoke, the correlation of El Nino to events in our area is rather weak, but a stronger El Nino can drive the southern jet stream a bit farther north bringing precipitation-bearing storm systems through the winter.

El Nino is likely to mean that the 2006 Atlantic hurricane season will continue to underperform, as the warmer waters in the Pacific focus storminess in that ocean and drive powerful upper level winds that rip apart the tops of developing tropical systems in the Atlantic.

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Mug of Kevin Myatt

Kevin Myatt works on the copy desk for The Roanoke Times and is its principal weather geek, writing a weekly weather column and advising the newsroom on weather topics. He helps guide students on a storm chasing trip to the central U.S. each May and was an editor for "Hurricanes and the Middle Atlantic States."

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