Tropical Storm ISAAC

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BULLETIN
TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER  11A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
800 PM AST THU AUG 23 2012
 
...ISAAC A LITTLE STRONGER AS IT CONTINUES MOVING
WEST-NORTHWESTWARD...
 
 
SUMMARY OF 800 PM AST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...16.2N 67.8W
ABOUT 190 MI...305 KM SW OF SAN JUAN PUERTO RICO
ABOUT 210 MI...340 KM SE OF SANTO DOMINGO DOMINICAN REPUBLIC
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
 
THE GOVERNMENT OF THE DOMINICAN REPUBLIC HAS CHANGED THE HURRICANE
WARNING TO A TROPICAL STORM WARNING FOR THE SOUTH COAST OF THE
DOMINICAN REPUBLIC FROM ISLA SAONA WESTWARD TO THE HAITI-DOMINICAN
REPUBLIC SOUTHERN BORDER.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A HURRICANE WARNING IS IN EFFECT FOR...
* HAITI
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* BRITISH VIRGIN ISLANDS
* PUERTO RICO...VIEQUES...CULEBRA...AND THE U.S. VIRGIN ISLANDS
* DOMINICAN REPUBLIC
* SOUTHEASTERN BAHAMAS INCLUDING THE ACKLINS...CROOKED ISLAND...LONG
CAY...THE INAGUAS...MAYAGUANA...AND THE RAGGED ISLANDS
* TURKS AND CAICOS ISLANDS
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* CUBAN PROVINCES OF CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...
SANTIAGO DE CUBA...AND GUANTANAMO.
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA.  PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
 
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 JAMAICA...THE REMAINDER OF CUBA...THE REMAINDER OF THE
BAHAMAS...SOUTH FLORIDA...AND THE FLORIDA KEYS 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 PM AST...0000 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS
LOCATED NEAR LATITUDE 16.2 NORTH...LONGITUDE 67.8 WEST. ISAAC IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 16 MPH...26 KM/H...AND THIS
GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH SATURDAY.  ON THE
FORECAST TRACK...THE CENTER OF ISAAC WILL APPROACH THE SOUTH COAST
OF THE DOMINICAN REPUBLIC TONIGHT...MOVE NEAR OR OVER THE SOUTH
COAST OF THE DOMINICAN REPUBLIC AND HAITI ON FRIDAY...AND APPROACH
SOUTHEASTERN CUBA FRIDAY NIGHT.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/H...WITH HIGHER
GUSTS.  STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...AND
ISAAC COULD BECOME A HURRICANE AS IT NEARS HAITI ON FRIDAY.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 185 MILES...295 KM
MAINLY TO THE NORTHEAST OF THE CENTER.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON NOAA HURRICANE
HUNTER AIRCRAFT AND BUOY DATA IS 1002 MB...29.59 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE STILL POSSIBLE OVER PORTIONS OF
PUERTO RICO AND THE U.S. AND BRITISH VIRGIN ISLANDS THIS EVENING. 
TROPICAL STORM CONDITIONS ARE EXPECTED OVER PORTIONS OF THE
DOMINICAN REPUBLIC ON FRIDAY...AND HURRICANE CONDITIONS ARE
EXPECTED OVER PORTIONS OF HAITI FRIDAY OR FRIDAY NIGHT.  TROPICAL
STORM CONDITIONS ARE EXPECTED OVER THE SOUTHEASTERN BAHAMAS AND THE
TURKS AND CAICOS ISLANDS BY LATE FRIDAY.  TROPICAL STORM CONDITIONS
ARE POSSIBLE OVER SOUTHEASTERN CUBA BY SATURDAY.
 
RAINFALL...TOTAL RAINFALL ACCUMULATIONS OF 8 TO 12 INCHES...WITH
MAXIMUM AMOUNTS OF 20 INCHES...ARE POSSIBLE OVER HISPANIOLA.
THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD
SLIDES.  TOTAL RAIN ACCUMULATIONS OF 2 TO 4 INCHES...WITH MAXIMUM
AMOUNTS OF 6 INCHES OVER HIGHER TERRAIN...ARE POSSIBLE OVER PUERTO
RICO AND THE VIRGIN ISLANDS.  TOTAL RAIN ACCUMULATIONS OF 4 TO 8
INCHES ARE POSSIBLE OVER THE NORTHERN WINDWARD ISLANDS AND THE
LEEWARD ISLANDS.
 
STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 2
TO 4 FEET ABOVE NORMAL TIDE LEVELS IN AREAS OF ONSHORE WINDS ALONG
THE COAST OF HISPANIOLA.  NEAR THE COAST...THE SURGE WILL BE
ACCOMPANIED BY DANGEROUS WAVES.  A STORM SURGE WILL RAISE WATER
LEVELS BY AS MUCH AS 1 TO 3 FEET ABOVE NORMAL TIDE LEVELS IN AREAS
OF ONSHORE WINDS ALONG THE COAST OF THE SOUTHEASTERN BAHAMAS AND
THE TURKS AND CAICOS.  STORM SURGE WILL GRADUALLY SUBSIDE IN PUERTO
RICO AND THE U.S. AND BRITISH VIRGIN ISLANDS TONIGHT.
 
SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL AFFECT THE
LEEWARD ISLANDS...VIRGIN ISLANDS...PUERTO RICO...HISPANIOLA...THE
SOUTHEASTERN BAHAMAS...AND THE TURKS AND CAICOS DURING THE NEXT
COUPLE OF DAYS.  PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER
OFFICE FOR MORE INFORMATION.
 
 
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...1100 PM AST.
 
$$
FORECASTER PASCH
 
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