Nick Wiltgen Updated: Sep 28, 2012, 1:20 PM EDT weather.com
Typhoon Moves Towards Japan
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For the first time in 15 years, we had three consecutive "super typhoons" in the western Pacific Ocean.
Jelawat became a super typhoon on Sunday (U.S. time) and remained one through much of Thursday. By Friday morning, Jelawat had weakened and was no longer a super typhoon.
The U.S. Joint Typhoon Warning Center, which tracks tropical cyclones in the Western Pacific, uses the term "super typhoon" for a tropical cyclone with maximum sustained winds of at least 150 miles per hour, the equivalent of a high-end Category 4 on the Saffir-Simpson Hurricane Wind Scale.
A "typhoon" is simply a different name for a "hurricane"; the sustained wind criteria for both are identical, at 74 miles per hour.
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