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Weatherwise -- May-June 2015

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The 2014 Eastern North Pacific Hurricane Season: A Very Active Season Brings Devastation

Tropical cyclone activity during the 2014 eastern North Pacific hurricane season was well above normal, and by several measures was the highest since the early 1990s. Of the 20 tropical storms that formed, 14 became hurricanes, and eight reached major hurricane strength (Category 3 or higher on the Saffir-Simpson Hurricane Wind Scale). The hurricane total was the second highest on record for the basin, and the number of major hurricanes tied the previous record. For comparison, the 1981–2010 seasonal averages are 15 tropical storms, eight hurricanes, and four major hurricanes. The Accumulated Cyclone Energy (ACE) index, a measure that takes into account both the strength and duration of the season's tropical storms and hurricanes, was 162% of the long-term median value.

The cyclone summaries are based on Tropical Cyclone Reports prepared by the authors, Lixion Avila, Jack Beven, Eric Blake, Daniel Brown, John Cangialosi, Richard Pasch, Stacy Stewart, Chris Landsea, and David Zelinsky. These reports are available on the Internet atwww.nhc.noaa.gov/2014epac.shtml. Summaries of the storms passing into the Central Pacific (between 140°W and the Dateline) were provided by the hurricane specialists at the Central Pacific Hurricane Center (CPHC) in Honolulu, Hawaii.

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