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BULLETIN
TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER  20A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092012
200 AM EDT SUN AUG 26 2012

...CENTER OF ISAAC MOVING BETWEEN THE NORTH COAST OF CUBA AND ANDROS
ISLAND...HURRICANE HUNTER AIRCRAFT APPROACHING...


SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...22.9N 78.0W
ABOUT 35 MI...60 KM NE OF CANAGUA CUBA
ABOUT 265 MI...430 KM ESE OF KEY WEST FLORIDA
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...NW OR 305 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

THE GOVERNMENT OF THE BAHAMAS HAS ISSUED A HURRICANE 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
* ANDROS ISLAND IN THE BAHAMAS

A HURRICANE WATCH IS IN EFFECT FOR...
* THE FLORIDA EAST COAST FROM GOLDEN BEACH SOUTHWARD TO OCEAN REEF

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* CUBAN PROVINCES OF CIEGO DE AVILA...SANCTI SPIRITUS...VILLA
CLARA...CAMAGUEY...LAS TUNAS...GRANMA...HOLGUIN...SANTIAGO DE
CUBA...AND GUANTANAMO
* THE BAHAMAS EXCLUDING ANDROS ISLAND
* TURKS AND CAICOS ISLANDS
* THE FLORIDA EAST COAST FROM SEBASTIAN INLET SOUTHWARD TO OCEAN
REEF
* LAKE OKEECHOBEE
* THE FLORIDA WEST COAST FROM NORTH OF BONITA BEACH TO TARPON
SPRINGS...INCLUDING TAMPA BAY

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* CUBAN PROVINCES OF MATANZAS AND CIENFUEGOS
* THE FLORIDA EAST COAST NORTH OF SEBASTIAN INLET TO FLAGLER BEACH
* THE FLORIDA WEST COAST AND THE FLORIDA PANHANDLE NORTH OF TARPON
SPRINGS TO INDIAN PASS

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...IN THIS CASE WITHIN THE NEXT 24 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...THE REMAINDER OF FLORIDA...AND
ELSEWHERE ALONG THE NORTHERN GULF COAST SHOULD MONITOR THE PROGRESS
OF ISAAC. A HURRICANE WATCH MAY BE REQUIRED FOR A PORTION OF THE
NORTHERN GULF COAST ON SUNDAY MORNING.

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 EDT...0600 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS
LOCATED NEAR LATITUDE 22.9 NORTH...LONGITUDE 78.0 WEST. ISAAC IS
MOVING TOWARD THE NORTHWEST NEAR 17 MPH...28 KM/H...AND THIS
GENERAL MOTION IS EXPECTED TO CONTINUE DURING THE NEXT 48 HOURS. ON
THE FORECAST TRACK...THE CENTER OF ISAAC SHOULD CONTINUE MOVING
JUST NORTH OF THE CENTRAL COAST OF CUBA OVERNIGHT...AND MOVE NEAR
OR OVER THE FLORIDA KEYS SUNDAY OR SUNDAY NIGHT. ISAAC IS FORECAST
TO MOVE OVER THE SOUTHEASTERN GULF OF MEXICO BY EARLY MONDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 60 MPH...95 KM/H...WITH HIGHER
GUSTS. 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. GUANTANAMO BAY CUBA RECENTLY REPORTED A SUSTAINED
WIND OF 38 MPH...61 KM/H...AND A WIND GUST OF 47 MPH...76 KM/H.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB...29.44 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 JAMAICA...THE CENTRAL AND EASTERN
PORTIONS OF CUBA...THE FLORIDA KEYS AND THE SOUTHERN PENINSULA OF
FLORIDA. TOTAL RAIN ACCUMULATIONS OF 3 TO 5 INCHES ARE POSSIBLE
OVER THE CENTRAL AND SOUTHERN BAHAMAS.

WIND...TROPICAL STORM CONDITIONS ARE OCCURRING OVER PORTIONS OF
EASTERN AND CENTRAL CUBA...THE BAHAMAS AND THE TURKS AND CAICOS
ISLANDS. HURRICANE CONDITIONS ARE POSSIBLE ON ANDROS ISLAND ON
SUNDAY. TROPICAL STORM CONDITIONS ARE POSSIBLE IN PORTIONS OF
NORTHWESTERN CUBA BY LATE SUNDAY.

HURRICANE CONDITIONS ARE EXPECTED IN THE HURRICANE WARNING AREA IN
SOUTHWEST FLORIDA AND THE FLORIDA KEYS ON SUNDAY...WITH TROPICAL
STORM CONDITIONS EXPECTED BY EARLY SUNDAY. HURRICANE CONDITIONS ARE
POSSIBLE IN THE HURRICANE WATCH AREA IN SOUTHEAST FLORIDA ON
SUNDAY...WITH TROPICAL STORM CONDITIONS EXPECTED IN THE TROPICAL
STORM WARNING AREA ALONG THE FLORIDA EAST COAST BY EARLY SUNDAY.
TROPICAL STORM CONDITIONS ARE EXPECTED TO SPREAD NORTHWARD ALONG
THE WEST COAST OF FLORIDA IN THE TROPICAL STORM WARNING AREA BY
EARLY MONDAY. TROPICAL STORM CONDITIONS ARE POSSIBLE ALONG THE WEST
COAST OF FLORIDA AND THE EASTERN FLORIDA PANHANDLE BY LATE MONDAY
IN THE TROPICAL STORM WATCH AREA.

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...

* SOUTHWEST FLORIDA COAST WITHIN HURRICANE WARNING AREA...5 TO 7 FT
* FLORIDA WEST COAST IN THE TROPICAL STORM WARNING AREA 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 AND TURKS AND CAICOS...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 ON SUNDAY.

SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL AFFECT
HISPANIOLA...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...500 AM EDT.

$$
FORECASTER BRENNAN


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