Sunday, August 26, 2012

8 am EDT advisory: Center of Isaac expected to be near or over Florida Keys later today and tonight - @NHC_Atlantic

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US Watch/Warning  


    000  WTNT34 KNHC 261154  TCPAT4    BULLETIN  TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER  21A  NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012  800 AM EDT SUN AUG 26 2012    ...ISAAC EXPECTED TO BE NEAR THE FLORIDA KEYS LATER TODAY...      SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION  ----------------------------------------------  LOCATION...23.5N 80.0W  ABOUT 135 MI...220 KM ESE OF KEY WEST FLORIDA  ABOUT 155 MI...245 KM E OF HAVANA CUBA  MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H  PRESENT MOVEMENT...WNW OR 300 DEGREES AT 20 MPH...31 KM/H  MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES      WATCHES AND WARNINGS  --------------------  CHANGES WITH THIS ADVISORY...    THE GOVERNMENT OF THE BAHAMAS HAS DISCONTINUED THE TROPICAL STORM  WARNING FOR THE CENTRAL AND SOUTHEASTERN BAHAMAS...AND HAS CHANGED  THE HURRICANE WARNING TO A TROPICAL STORM WARNING FOR ANDROS  ISLAND.    SUMMARY OF WATCHES AND WARNINGS IN EFFECT...    A HURRICANE WARNING IS IN EFFECT FOR...  * THE FLORIDA KEYS INCLUDING THE DRY TORTUGAS  * THE WEST COAST OF FLORIDA FROM BONITA BEACH SOUTHWARD TO OCEAN  REEF  * FLORIDA BAY    A HURRICANE WATCH IS IN EFFECT FOR...  * THE FLORIDA EAST COAST FROM GOLDEN BEACH SOUTHWARD TO OCEAN REEF  * THE MOUTH OF THE MISSISSIPPI RIVER TO INDIAN PASS FLORIDA...NOT  INCLUDING METROPOLITAN NEW ORLEANS    A TROPICAL STORM WARNING IS IN EFFECT FOR...  * THE CUBAN PROVINCES OF CIEGO DE AVILA...SANCTI SPIRITUS...VILLA  CLARA...CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...SANTIAGO DE  CUBA...AND GUANTANAMO  * THE NORTHWESTERN BAHAMAS  * THE FLORIDA EAST COAST FROM SEBASTIAN INLET SOUTHWARD TO OCEAN  REEF  * LAKE OKEECHOBEE  * THE FLORIDA WEST COAST AND THE FLORIDA PANHANDLE FROM NORTH OF  BONITA BEACH TO INDIAN PASS...INCLUDING TAMPA BAY    A TROPICAL STORM WATCH IS IN EFFECT FOR...  * THE CUBAN PROVINCES OF MATANZAS AND CIENFUEGOS  * THE FLORIDA EAST COAST NORTH OF SEBASTIAN INLET TO FLAGLER BEACH    A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED  SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 24  HOURS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED  TO COMPLETION.    A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE  WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS  BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE  WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR  DANGEROUS.    A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE  EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.    A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE  POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.    INTERESTS IN THE REMAINDER OF CUBA...THE REMAINDER OF FLORIDA...AND  THE REMAINDER OF THE NORTHERN GULF COAST SHOULD MONITOR THE PROGRESS  OF ISAAC.    FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES...  INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR  PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST  OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE THE  UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL  METEOROLOGICAL SERVICE.      DISCUSSION AND 48-HOUR OUTLOOK  ------------------------------  AT 800 AM EDT...1200 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS  LOCATED NEAR LATITUDE 23.5 NORTH...LONGITUDE 80.0 WEST. ISAAC IS  MOVING TOWARD THE WEST-NORTHWEST NEAR 20 MPH...31 KM/H. A WEST-  NORTHWESTWARD TO NORTHWESTWARD MOTION IS EXPECTED DURING THE NEXT  48 HOURS WITH A GRADUAL DECREASE IN FORWARD SPEED.  ON THE FORECAST  TRACK...THE CENTER OF ISAAC IS EXPECTED TO MOVE JUST NORTH OF CUBA  THIS MORNING...MOVE NEAR OR OVER THE FLORIDA KEYS LATER TODAY AND  TONIGHT...AND MOVE INTO THE EASTERN GULF OF MEXICO ON MONDAY.    MAXIMUM SUSTAINED WINDS ARE NEAR 65 MPH...100 KM/H...WITH HIGHER  GUSTS. SOME STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...  AND ISAAC IS EXPECTED TO BE AT OR NEAR HURRICANE STRENGTH WHEN IT  REACHES THE FLORIDA KEYS.    TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 205 MILES...335 KM  FROM THE CENTER.  MOLASSES REEF RECENTLY REPORTED A WIND GUST TO 54  MPH...87 KM/H.    THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY THE AIRCRAFT WAS 995  MB...29.38 INCHES.      HAZARDS AFFECTING LAND  ----------------------  RAINFALL...TOTAL RAINFALL ACCUMULATIONS OF 4 TO 8 INCHES...WITH  MAXIMUM AMOUNTS OF 12 INCHES...ARE POSSIBLE ACROSS THE FLORIDA  KEYS...THE SOUTHERN PENINSULA OF FLORIDA AND PORTIONS OF CENTRAL AND  EASTERN CUBA. TOTAL RAIN ACCUMULATIONS OF 3 TO 6 INCHES ARE  POSSIBLE OVER THE CENTRAL AND SOUTHERN BAHAMAS.    WIND...TROPICAL STORM CONDITIONS ARE OCCURRING OVER PORTIONS OF  EASTERN AND CENTRAL CUBA AND THE BAHAMAS AND THE TURKS AND CAICOS  ISLANDS. TROPICAL STORM CONDITIONS ARE POSSIBLE IN PORTIONS OF  NORTHWESTERN CUBA BY LATE TODAY.    HURRICANE CONDITIONS ARE EXPECTED IN THE HURRICANE WARNING AREA IN  SOUTHWEST FLORIDA AND THE FLORIDA KEYS TODAY. HOWEVER...THE  LIKELIHOOD OF HURRICANE CONDITIONS OCCURRING IN SOUTHEAST FLORIDA  IS DECREASING.      TROPICAL STORM CONDITIONS ARE OCCURRING IN THE TROPICAL  STORM WARNING AREA ALONG THE FLORIDA EAST COAST. TROPICAL STORM  CONDITIONS ARE EXPECTED TO SPREAD NORTHWARD ALONG THE WEST COAST OF  FLORIDA AND INTO THE EASTERN FLORIDA PANHANDLE IN THE TROPICAL  STORM WARNING AREA TONIGHT AND MONDAY.    HURRICANE CONDITIONS ARE POSSIBLE IN THE HURRICANE WATCH AREA ALONG  THE NORTHERN GULF COAST ON TUESDAY...WITH TROPICAL STORM CONDITIONS  POSSIBLE BY MONDAY NIGHT.    STORM SURGE...THE COMBINATION OF A STORM SURGE AND THE TIDE WILL  CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY RISING  WATERS. THE WATER COULD REACH THE FOLLOWING DEPTHS ABOVE GROUND IF  THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE...    * CRYSTAL RIVER THROUGH THE BIG BEND OF FLORIDA...4 TO 7 FT  * SOUTHWEST FLORIDA COAST WITHIN HURRICANE WARNING AREA...4 TO 6 FT  * FLORIDA WEST COAST FROM BONITA BEACH TO SOUTH OF CRYSTAL RIVER  INCLUDING TAMPA BAY...3 TO 5 FT  * SOUTHEAST FLORIDA COAST AND THE FLORIDA KEYS...1 TO 3 FT  * CENTRAL AND EASTERN CUBA...1 TO 3 FT  * THE BAHAMAS...1 TO 3 FT    THE DEEPEST WATER WILL OCCUR ALONG THE IMMEDIATE COAST IN AREAS OF  ONSHORE FLOW. SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE TIMING  OF THE SURGE AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT  DISTANCES. FOR INFORMATION SPECIFIC TO YOUR AREA...PLEASE SEE  PRODUCTS ISSUED BY YOUR LOCAL WEATHER SERVICE OFFICE. NEAR THE  COAST...THE SURGE WILL BE ACCOMPANIED BY DANGEROUS WAVES.    TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER PORTIONS OF CENTRAL  AND SOUTHERN FLORIDA AND THE FLORIDA KEYS TODAY.    SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL CONTINUE TO  AFFECT THE BAHAMAS...THE TURKS AND CAICOS...EASTERN AND CENTRAL  CUBA...THE FLORIDA PENINSULA AND THE FLORIDA KEYS DURING THE NEXT  COUPLE OF DAYS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER  OFFICE FOR MORE INFORMATION.      NEXT ADVISORY  -------------  NEXT COMPLETE ADVISORY...1100 AM EDT.    $$  FORECASTER PASCH/ROBERTS      


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Page last modified: Sunday, 26-Aug-2012 11:54:59 UTC