Isaac may become hurricane over Fla. Keys

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Isaac may become hurricane over Fla. Keys

by Associated Press Videos 1:35 mins

Isaac may become hurricane over Fla. Keys

by Associated Press Videos 1:35 mins

National Hurricane Center Rick Knabb held a briefing on the Tropical Storm Isaac Sunday morning. Knabb says the Isaac could increase to hurricane strength by the time it reaches the Florida keys. (Aug. 26)

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