Monday, August 22, 2011

Hurricane Irene Advisory #8A

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WTNT34 KNHC 221748
TCPAT4

BULLETIN
HURRICANE IRENE INTERMEDIATE ADVISORY NUMBER 8A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092011
200 PM AST MON AUG 22 2011

...IRENE MOVING AWAY FROM PUERTO RICO...TROPICAL STORM WARNINGS DISCONTINUED...

SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
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LOCATION...19.3N 68.1W
ABOUT 150 MI...240 KM WNW OF SAN JUAN PUERTO RICO
ABOUT 50 MI...80 KM NNE OF PUNTA CANA DOMINICAN REPUBLIC
MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...989 MB...29.20 INCHES


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

THE TROPICAL STORM WARNING FOR PUERTO RICO...VIEQUES AND CULEBRA HAS BEEN DISCONTINUED.

THE TROPICAL STORM WARNING FOR THE SOUTH COAST OF THE DOMINICAN REPUBLIC WEST OF SANTO DOMINGO HAS BEEN DISCONTINUED.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* NORTH COAST OF THE DOMINICAN REPUBLIC FROM THE HAITI BORDER EASTWARD TO CABO ENGANO
* SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS ISLANDS

A HURRICANE WATCH IS IN EFFECT FOR...
* NORTH COAST OF HAITI FROM LE MOLE ST. NICHOLAS EASTWARD TO THE DOMINICAN REPUBLIC BORDER
* CENTRAL BAHAMAS

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* SOUTH COAST OF THE DOMINICAN REPUBLIC FROM SANTO DOMINGO EASTWARD TO CABO ENGANO
* ALL OF HAITI

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 200 PM AST...1800 UTC...THE CENTER OF HURRICANE IRENE WAS LOCATED NEAR LATITUDE 19.3 NORTH...LONGITUDE 68.1 WEST. IRENE IS MOVING TOWARD THE WEST-NORTHWEST NEAR 12 MPH...19 KM/H...AND THIS MOTION IS EXPECTED TO CONTINUE DURING THE NEXT 24 TO 48 HOURS. ON THIS TRACK THE CORE OF IRENE WILL BE MOVING JUST TO THE NORTH OF THE DOMINICAN REPUBLIC AND HAITI TODAY...NEAR OR OVER THE TURKS AND CAICOS ISLANDS AND THE SOUTHEASTERN BAHAMAS ON TUESDAY...AND NEAR THE CENTRAL BAHAMAS EARLY WEDNESDAY.

DATA FROM A RECONNAISSANCE PLANE INDICATE THAT THE MAXIMUM SUSTAINED WINDS REMAIN NEAR NEAR 80 MPH...130 KM/H...WITH HIGHER GUSTS. IRENE IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON HURRICANE SCALE. STRENGTHENING IS FORECAST DURING THE NEXT FEW DAYS. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES...45 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 185 MILES...295 KM TO THE NORTHEAST OF THE CENTER.

MINIMUM CENTRAL PRESSURE ESTIMATED FROM A RECONNAISSANCE PLANE WAS 989 MB...29.20 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS WILL REACH THE NORTHERN PORTION OF DOMINICAN REPUBLIC BY THIS AFTERNOON. HURRICANE CONDITIONS ARE EXPECTED OVER THE NORTHERN PORTIONS OF THE DOMINICAN REPUBLIC BY TONIGHT. THE HIGHEST WINDS ARE LIKELY TO OCCUR OVER AREAS OF ELEVATED TERRAIN. HURRICANE 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.

RAINFALL...IRENE IS EXPECTED TO PRODUCE ADDITIONAL RAINFALL ACCUMULATIONS OF 2 TO 4 INCHES ACROSS PUERTO RICO AND THE VIRGIN ISLANDS. RAINFALL AMOUNTS OF 3 TO 6 INCHES ARE EXPECTED OVER NORTHERN HISPANIOLA...WITH ISOLATED AMOUNTS OF UP TO 10 INCHES POSSIBLE OVER HIGHER TERRAIN. THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES IN AREAS OF STEEP TERRAIN. RAINFALL ACCUMULATIONS OF 5 TO 10 INCHES ARE POSSIBLE IN THE SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS ISLANDS.

STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 2 TO 4 FEET ABOVE NORMAL TIDE LEVELS ALONG THE ENTIRE COAST OF THE DOMINICAN REPUBLIC. STORM SURGE WILL ALSO RAISE WATER LEVELS BY AS MUCH AS 4 TO 6 FEET ABOVE NORMAL TIDE LEVELS OVER THE SOUTHEASTERN BAHAMAS AND TURKS AND CAICOS. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DANGEROUS WAVES. ELEVATED WATERS LEVELS WILL CONTINUE TO GRADUALLY SUBSIDE IN PUERTO RICO AND THE VIRGIN ISLANDS.


NEXT ADVISORY
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NEXT COMPLETE ADVISORY...500 PM AST.

$$
FORECASTER AVILA