Mighty hurricanes get mightier

These and other strong tropical cyclones have become more powerful in recent years.

By Sid Perkins, 11:55 AM September 3, 2008

Some of the world’s strongest storms, particularly North Atlantic hurricanes, have, on average, gained wind speed during the past three decades, thanks to a warming trend in many of the ocean basins where such storms are spawned.

New analyses reported in the Sept. 4 Nature indicate that in the strongest tropical cyclones — also known as hurricanes in the North Atlantic and typhoons in the North Pacific — peak wind speeds increased as much as 3 meters per second each decade from 1...

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