Tropical Storm Ernesto strengthens

KINGSTON, Jamaica — Tropical Storm Ernesto gathered strength as it steamed through the central Caribbean toward Jamaica on Saturday and threatened to enter the Gulf of Mexico as the first hurricane of the 2006 Atlantic season.
Ernesto could grow into a Category 3 hurricane by Thursday, menacing a broad swath of the Gulf Coast including hurricane-ravaged New Orleans, the U.S. National Hurricane Center in Miami forecast. Category 3 hurricane Katrina struck the city a year ago Tuesday.
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