NEW : Gustav downgraded to tropical storm . - The NHC is warning of a possible hurricane threat for the eastern Caribbean and northern Gulf Coast through Saturday night. About 2 million evacuees urged to stay away while damaged assessed . 800,000 lose electricity , may take weeks to restore , Louisiana governor says . Watch breaking hurricane news live on CNN.com .
NEW : Gustav downgraded to tropical storm . NEW : About 2 million evacuees urged to stay away while damaged assessed . 800,000 lose electricity , may take weeks to restore , Louisiana governor says . Watch breaking hurricane news live on CNN.com .