From http://www.nhc.noaa.gov/ ...
...HANNA BECOMES THE FOURTH HURRICANE OF THE SEASON...
AT 130 PM AST...1730 UTC...THE GOVERNMENT OF THE BAHAMAS HAS ISSUED
A HURRICANE WARNING FOR THE CENTRAL BAHAMAS...THE SOUTHEASTERN
BAHAMAS...AND THE TURKS AND CAICOS ISLANDS. A HURRICANE WARNING
MEANS THAT HURRICANE CONDITIONS ARE EXPECTED WITHIN THE WARNING
AREA WITHIN THE NEXT 24 HOURS. PREPARATIONS TO PROTECT LIFE AND
PROPERTY SHOULD BE RUSHED TO COMPLETION.
HANNA IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON
SCALE. SOME ADDITIONAL STRENGTHENING IS FORECAST DURING THE NEXT 24
HOURS.
HANNA IS EXPECTED TO PRODUCE RAINFALL AMOUNTS OF 4 TO 8 INCHES OVER
THE CENTRAL AND SOUTHEASTERN BAHAMAS...TURKS AND CAICOS ISLANDS...
WITH ISOLATED MAXIMUM AMOUNTS OF UP TO 12 INCHES POSSIBLE THROUGH
THURSDAY.
SWELLS FROM HANNA ARE EXPECTED TO INCREASE THE RISK OF DANGEROUS RIP
CURRENTS ALONG PORTIONS OF THE SOUTHEASTERN UNITED STATES COAST
DURING THE NEXT COUPLE OF DAYS.