NU Online News Service, Dec. 20, 3:59 p.m. EST

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While forecasts for this past hurricane season were largelyaccurate regarding the number of storms, shorter term weatherpatterns managed to steer these storms away from the U.S.,according to a story that will appear in NationalUnderwriter magazine.

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The story, written by Peter Dailey, assistant vice president,director of atmospheric science at AIR Worldwide, notes that thejet stream's position over North America acted as a barrier thatkept many storms over open water this past hurricane season.

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In addition, Mr. Dailey writes that in 2010, the "BermudaHigh"--a large semi-permanent center of high atmospheric pressurein the eastern Atlantic near the Azores (and roughly at thelatitude of Bermuda)--was, at times, situated further east thanusual, and was also occasionally weaker than usual.

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Other storms simply formed too far east, so they began turningnorth and back east before hitting the U.S. East Coast.

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The season itself was the second most active season on record interms of number of storms. The year saw 19 named storms, 12hurricanes and five major hurricanes--in line with mostpre-hurricane season forecasts.

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Mr. Dailey writes, "Climate conditions such as warm sea surfacetemperatures and the El Ni?o/La Ni?a-Southern Oscillation cansignificantly influence tropical cyclone formation and development.However, even under favorable conditions driven by a warm Atlantic,the number of hurricane landfalls can be average or even well belowaverage."

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For the full story, see the NU print edition to bepublished on Dec. 27.

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