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WTNT34 KNHC 220251
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BULLETIN
TROPICAL STORM IRENE ADVISORY NUMBER   6
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092011
1100 PM AST SUN AUG 21 2011

...IRENE STRENGTHENING AS IT APPROACHES PUERTO RICO...


SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...17.9N 65.5W
ABOUT 50 MI...75 KM WNW OF ST. CROIX
ABOUT 50 MI...85 KM SE OF SAN JUAN PUERTO RICO
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.32 INCHES


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

THE GOVERNMENT OF THE BAHAMAS HAS CHANGED THE TROPICAL STORM WATCH
TO A HURRICANE WATCH FOR THE CENTRAL BAHAMAS.

THE GOVERNMENT OF FRANCE HAS DISCONTINUED THE TROPICAL STORM WARNING
FOR ST. MARTIN AND ST. BARTHELEMY.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* PUERTO RICO...VIEQUES...AND CULEBRA
* THE ENTIRE COASTLINE OF THE DOMINICAN REPUBLIC

A HURRICANE WATCH IS IN EFFECT FOR...
* U.S. VIRGIN ISLANDS
* CENTRAL BAHAMAS

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* U.S. VIRGIN ISLANDS
* BRITISH VIRGIN ISLANDS
* HAITI
* SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS ISLANDS

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 1100 PM AST...0300 UTC...THE CENTER OF TROPICAL STORM IRENE WAS
LOCATED NEAR LATITUDE 17.9 NORTH...LONGITUDE 65.5 WEST.  IRENE IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 15 MPH...24 KM/H.  THIS
GENERAL MOTION IS EXPECTED TO CONTINUE FOR THE NEXT COUPLE OF DAYS
WITH A GRADUAL DECREASE IN FORWARD SPEED.  ON THE FORECAST TRACK
THE CENTER OF IRENE WILL MOVE NEAR OR OVER PUERTO RICO TONIGHT AND
NEAR OR OVER THE DOMINICAN REPUBLIC ON MONDAY AND MONDAY NIGHT.

DATA FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 70 MPH...110
KM/H...WITH HIGHER GUSTS.  SOME STRENGTHENING IS STILL POSSIBLE
OVERNIGHT...AND IRENE COULD BECOME A HURRICANE BEFORE MOVING OVER
PUERTO RICO IN THE NEXT FEW HOURS.  SOME WEAKENING IS EXPECTED ON
MONDAY AND MONDAY NIGHT AS THE CENTER MOVES NEAR OR OVER THE
DOMINICAN REPUBLIC.  SOME RESTRENGTHENING IS EXPECTED LATE TUESDAY
AFTER THE CENTER MOVES OVER WATER.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 150 MILES...240 KM
FROM THE CENTER.  A STATION AT SALT RIVER BAY ON ST. CROIX RECENTLY
REPORTED A SUSTAINED WIND OF 47 MPH...76 KM/H...AND A GUST TO 57
MPH...92 KM/H.  ROOSEVELT ROADS NAVAL STATION ON PUERTO RICO
RECENTLY REPORTED A WIND GUST TO 45 MPH...72 KM/H.

THE LATEST MINIMUM CENTRAL PRESSURE MEASURED BY THE HURRICANE HUNTER
AIRCRAFT WAS 993 MB...29.32 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE OCCURRING OR IMMINENT IN THE
VIRGIN ISLANDS...EASTERN PUERTO RICO...CULEBRA AND VIEQUES...AND
WILL CONTINUE TO SPREAD ACROSS PUERTO RICO TONIGHT.  TROPICAL STORM
CONDITIONS WILL REACH THE DOMINICAN REPUBLIC EARLY MONDAY.
HURRICANE CONDITIONS ARE EXPECTED OVER PUERTO RICO...VIEQUES AND
CULEBRA TONIGHT...AND OVER THE DOMINICAN REPUBLIC ON MONDAY.  THE
HIGHEST WINDS ARE LIKELY TO OCCUR OVER AREAS OF ELEVATED TERRAIN.
TROPICAL STORM CONDITIONS ARE EXPECTED TO REACH THE SOUTHEASTERN
BAHAMAS AND THE TURKS AND CAICOS ISLANDS TUESDAY...AND ARE POSSIBLE
IN THE CENTRAL BAHAMAS BY LATE TUESDAY.  HURRICANE CONDITIONS ARE
POSSIBLE IN THE CENTRAL BAHAMAS BY TUESDAY NIGHT.

RAINFALL...IRENE IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS
OF 5 TO 10 INCHES ACROSS PUERTO RICO...THE VIRGIN ISLANDS...THE
DOMINICAN REPUBLIC...HAITI...THE SOUTHEASTERN BAHAMAS AND THE TURKS
AND CAICOS ISLANDS.  ISOLATED MAXIMUM AMOUNTS OF UP TO 20 INCHES
ARE POSSIBLE.  THESE RAINS COULD CAUSE LIFE-THREATENING FLASH
FLOODS AND MUD SLIDES IN AREAS OF STEEP TERRAIN.

STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 3
TO 5 FEET ABOVE NORMAL TIDE LEVELS ALONG THE COAST OF THE DOMINICAN
REPUBLIC IN THE HURRICANE WARNING AREA.  A STORM SURGE OF 1 TO 3
FEET ABOVE NORMAL TIDE LEVELS IS EXPECTED ALONG THE COAST OF PUERTO
RICO...AS WELL AS IN THE TROPICAL STORM WARNING AREA. NEAR THE
COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DANGEROUS WAVES.


NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...200 AM AST.
NEXT COMPLETE ADVISORY...500 AM AST.

$$
FORECASTER BRENNAN



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