This early-season intensification is rare, with only a few similar instances in recent history, such as Hurricanes Charley in 2004 and Dennis and Emily in 2005.
Hurricane Erin now a powerful Category 5 Storm; No landfall expected

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This early-season intensification is rare, with only a few similar instances in recent history, such as Hurricanes Charley in 2004 and Dennis and Emily in 2005.