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BULLETIN
TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER  15A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
800 PM EDT FRI AUG 24 2012

...ISAAC TEMPORARILY SLOWS DOWN...BUT STILL EXPECTED TO MAKE
LANDFALL IN HAITI TONIGHT...


SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...17.3N 72.0W
ABOUT 90 MI...145 KM SSE OF PORT AU PRINCE HAITI
ABOUT 270 MI...440 KM SE OF GUANTANAMO CUBA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NW OR 315 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...992 MB...29.29 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 CIEGO DE AVILA...SANCTI SPIRITUS...VILLA
CLARA...CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...SANTIAGO DE
CUBA...AND GUANTANAMO
* ANDROS ISLAND
* THE CENTRAL BAHAMAS INCLUDING CAT ISLAND...THE EXUMAS...LONG
ISLAND...RUM CAY...AND SAN SALVADOR
* 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 MATANZAS AND CIENFUEGOS
* JAMAICA
* THE NORTHWESTERN BAHAMAS...INCLUDING THE ABACOS...BERRY ISLANDS...
BIMINI...ELEUTHERA...GRAND BAHAMA ISLAND...AND NEW PROVIDENCE.
* THE FLORIDA KEYS INCLUDING THE DRY TORTUGAS
* THE FLORIDA EAST COAST SOUTH OF JUPITER INLET
* THE FLORIDA WEST COAST SOUTH OF BONITA BEACH
* FLORIDA BAY AND LAKE OKEECHOBEE

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 THE REMAINDER OF CUBA AND THE REMAINDER OF THE FLORIDA
PENINSULA 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 EDT...0000 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS
LOCATED NEAR LATITUDE 17.3 NORTH...LONGITUDE 72.0 WEST. ISAAC IS
MOVING TOWARD THE NORTHWEST NEAR 10 MPH...17 KM/H...BUT IS EXPECTED
TO RESUME A FASTER FORWARD SPEED TOWARD THE NORTHWEST TONIGHT
THROUGH SUNDAY.  ON THE FORECAST TRACK...THE CENTER OF ISAAC SHOULD
MAKE LANDFALL IN HAITI TONIGHT...MOVE NEAR OR OVER SOUTHEASTERN
CUBA ON SATURDAY...MOVE NEAR OR OVER CENTRAL CUBA SATURDAY NIGHT...
AND APPROACH THE FLORIDA KEYS ON SUNDAY.

REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS REMAIN NEAR 65 MPH...100 KM/H...WITH
HIGHER GUSTS.  LITTLE CHANGE IN STRENGTH IS LIKELY BEFORE
LANDFALL...FOLLOWED BY SOME WEAKENING AS THE CENTER CROSSES
HAITI AND SOUTHEASTERN CUBA.

TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 185 MILES...295 KM
FROM THE CENTER.

THE MINIMUM CENTRAL PRESSURE REPORTED BY THE HURRICANE HUNTER
AIRCRAFT IS 992 MB...29.29 INCHES.


HAZARDS AFFECTING LAND
----------------------
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 4 TO 8 INCHES...WITH MAXIMUM AMOUNTS OF
12 INCHES...ARE POSSIBLE ACROSS CENTRAL AND EASTERN CUBA...AS WELL
AS JAMAICA. TOTAL RAIN ACCUMULATIONS OF 2 TO 4 INCHES...WITH
MAXIMUM AMOUNTS OF 6 INCHES ARE EXPECTED OVER PUERTO RICO. TOTAL
RAIN ACCUMULATIONS OF 2 TO 4 INCHES ARE POSSIBLE OVER THE
SOUTHEASTERN AND CENTRAL BAHAMAS.  RAIN ACCUMULATIONS OF 4 TO 8
INCHES...WITH MAXIMUM AMOUNTS OF 12 INCHES...ARE POSSIBLE OVER THE
FLORIDA KEYS AND THE SOUTHERN FLORIDA PENINSULA.

WIND...TROPICAL STORM CONDITIONS ARE SPREADING OVER PORTIONS OF THE
DOMINICAN REPUBLIC AND HAITI...WITH HURRICANE CONDITIONS POSSIBLE.
TROPICAL STORM CONDITIONS ARE EXPECTED OVER THE SOUTHEASTERN
BAHAMAS AND THE TURKS AND CAICOS ISLANDS TONIGHT...ARE EXPECTED
OVER THE CENTRAL BAHAMAS BY SATURDAY OR SATURDAY NIGHT...AND ARE
EXPECTED OVER ANDROS ISLAND BY SUNDAY. TROPICAL STORM CONDITIONS
ARE EXPECTED OVER EASTERN CUBA BY TONIGHT AND OVER CENTRAL CUBA BY
SATURDAY OR SATURDAY NIGHT. TROPICAL STORM CONDITIONS COULD REACH
NORTHWESTERN CUBA AND THE NORTHWESTERN BAHAMAS BY SATURDAY NIGHT OR
SUNDAY...AND SOUTH FLORIDA AND THE FLORIDA KEYS ON SUNDAY.

STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 1
TO 3 FEET ABOVE NORMAL TIDE LEVELS IN AREAS OF ONSHORE WINDS IN THE
TROPICAL STORM WARNING AREAS. NEAR THE COAST...THE SURGE WILL BE
ACCOMPANIED BY DANGEROUS WAVES.

SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL AFFECT PUERTO
RICO...HISPANIOLA...THE SOUTHEASTERN AND CENTRAL BAHAMAS...THE
TURKS AND CAICOS...AND EASTERN AND CENTRAL CUBA DURING THE NEXT
COUPLE OF DAYS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER
OFFICE FOR MORE INFORMATION.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...1100 PM EDT.

$$
FORECASTER STEWART



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