National Hurricane Center issues advisory for Tropical Depression 1 near Gulf
A disturbance in the Caribbean has been upgraded to a tropical depression, the first of the Atlantic hurricane season, according to the National Weather Service.
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Alex weakens over Yucatan but to regain storm power
Alex, the first named storm of the 2010 Atlantic hurricane season, was downgraded to a tropical depression as it moved over the Yucatan peninsula but was likely to regain strength over the Gulf of Mexico later on Sunday, the U.S. National Hurricane Center said.
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It's the stage before a hurricane. Katrina was a category 4 hurricane, not a tropical depression.