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For all its numbing ferocity, Hurricane Katrina will not be a unique event, say scientists, who say that global warming appears to be pumping up the power of big Atlantic storms.
2005 is on track to be the worst-ever year for hurricanes, according to experts measuring ocean temperatures and trade winds -- the two big factors that breed these storms in the Caribbean and tropical North Atlantic.
Earlier this month, Tropical Storm Risk, a London-based consortium of experts, predicted that the region would see 22 tropical storms during the six-month June-November season, the most ever recorded and more than twice the average annual tally since records began in 1851.
Seven of these storms would strike the United States, of which three would be hurricanes, it said.
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