Tropical Storm ISAAC

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BULLETIN
TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER  12A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
200 AM AST FRI AUG 24 2012
 
...ISAAC MOVING WEST-NORTHWESTWARD OVER THE NORTHERN CARIBBEAN
SEA...EXPECTED TO BRING HEAVY RAINS AND FLOODING TO HISPANIOLA...
 
 
SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
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LOCATION...16.9N 69.4W
ABOUT 115 MI...185 KM SSE OF SANTO DOMINGO DOMINICAN REPUBLIC
ABOUT 225 MI...360 KM ESE OF PORT AU PRINCE HAITI
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A HURRICANE WATCH IS IN EFFECT FOR...
* HAITI
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* DOMINICAN REPUBLIC
* HAITI
* CUBAN PROVINCES OF CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...
SANTIAGO DE CUBA...AND GUANTANAMO
* 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 CIEGO DE AVILA...SANCTI SPIRITUS...AND VILLA
CLARA
* ANDROS ISLAND AND THE CENTRAL BAHAMAS INCLUDING CAT ISLAND...THE
EXUMAS...LONG ISLAND...RUM CAY...AND SAN SALVADOR
 
A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA...IN THIS CASE WITHIN THE NEXT 24 TO 36 HOURS.
 
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 200 AM AST...0600 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS
LOCATED NEAR LATITUDE 16.9 NORTH...LONGITUDE 69.4 WEST.  ISAAC IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 17 MPH...28 KM/H.  A WEST-
NORTHWEST TO NORTHWEST MOTION AT A SLIGHTLY SLOWER FORWARD SPEED IS
EXPECTED OVER THE NEXT COUPLE OF DAYS.  ON THE FORECAST TRACK...THE
CENTER OF ISAAC WILL BE NEAR OR OVER HISPANIOLA ON FRIDAY...AND
MOVE NEAR OR OVER SOUTHEASTERN CUBA ON SATURDAY.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/H...WITH HIGHER
GUSTS.  SOME STRENGTHENING IS FORECAST WHILE THE CENTER REMAINS OVER
WATER.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 185 MILES...295 KM
FROM THE CENTER.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1001 MB...29.56 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED OVER PORTIONS OF THE
DOMINICAN REPUBLIC AND HAITI ON FRIDAY...WITH HURRICANE CONDITIONS
POSSIBLE OVER PORTIONS OF HAITI.  TROPICAL STORM CONDITIONS ARE
EXPECTED OVER THE SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS
ISLANDS BY LATE FRIDAY.  TROPICAL STORM CONDITIONS ARE EXPECTED
OVER EASTERN CUBA BY LATE FRIDAY OR EARLY SATURDAY.  TROPICAL STORM
CONDITIONS ARE POSSIBLE OVER CENTRAL CUBA...THE CENTRAL BAHAMAS...
AND ANDROS ISLAND 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 3 TO 6 INCHES...WITH MAXIMUM AMOUNTS OF
10 INCHES...ARE POSSIBLE ACROSS EASTERN CUBA. 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 2 TO 4 INCHES ARE POSSIBLE
OVER THE SOUTHEASTERN BAHAMAS.
 
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 WITHIN THE REMAINDER OF THE 
TROPICAL STORM WARNING AREA.
 
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...500 AM AST.
 
$$
FORECASTER BRENNAN
 
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