Hurricane Isaac
Public Advisory 10A
170
WTNT34 KNHC 231753
TCPAT4
BULLETIN
TROPICAL STORM ISAAC INTERMEDIATE ADVISORY NUMBER 10A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012
200 PM AST THU AUG 23 2012
...CENTER OF ISAAC NOW MOVING WEST-NORTHWESTWARD SOUTH OF PUERTO
RICO...
SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...16.0N 66.4W
ABOUT 165 MI...255 KM S OF SAN JUAN PUERTO RICO
ABOUT 275 MI...445 KM SE OF SANTO DOMINGO DOMINICAN REPUBLIC
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
NONE.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* SOUTH COAST OF DOMINICAN REPUBLIC FROM ISLA SAONA WESTWARD TO THE
HAITI-DOMINICAN REPUBLIC SOUTHERN BORDER
* HAITI
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* BRITISH VIRGIN ISLANDS
* PUERTO RICO...VIEQUES...CULEBRA...AND THE U.S. VIRGIN ISLANDS
* NORTH COAST OF DOMINICAN REPUBLIC FROM THE HAITI-DOMINICAN
REPUBLIC NORTHERN BORDER EASTWARD TO NORTH OF ISLA SAONA
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* SOUTHEASTERN BAHAMAS INCLUDING THE ACKLINS...CROOKED
ISLAND...LONG CAY...THE INAGUAS...MAYAGUANA...AND THE RAGGED
ISLANDS AND THE TURKS AND CAICOS ISLANDS
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
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 CUBA...JAMAICA...AND ELSEWHERE IN THE BAHAMAS SHOULD
MONITOR THE PROGRESS OF ISAAC.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...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 PM AST...1800 UTC...THE CENTER OF TROPICAL STORM ISAAC WAS
LOCATED NEAR LATITUDE 16.0 NORTH...LONGITUDE 66.4 WEST. ISAAC IS NOW
MOVING TOWARD THE WEST-NORTHWEST NEAR 15 MPH...24 KM/H...AND THIS
GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH SATURDAY. ON THE
FORECAST TRACK...THE CENTER OF ISAAC WILL CONTINUE TO PASS SOUTH OF
PUERTO RICO TODAY...AND BE NEAR THE SOUTH COAST OF THE DOMINICAN
REPUBLIC AND HAITI ON FRIDAY.
MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH...65 KM/H...WITH HIGHER
GUSTS. STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS...AND
ISAAC COULD BECOME A HURRICANE AS IT NEARS THE DOMINICAN REPUBLIC
AND HAITI. AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT IS
CURRENTLY INVESTIGATING ISAAC.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM
FROM THE CENTER. NOAA BUOY 42060 RECENTLY REPORTED 1-MINUTE MEAN
WINDS OF 40 MPH...65 KM/HR...AND A WIND GUST OF 47 MPH...76 KM/HR.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 1003 MB...29.62 INCHES.
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE SUBSIDING OVER THE LEEWARD
ISLANDS. TROPICAL STORM CONDITIONS ARE EXPECTED OVER PORTIONS OF
PUERTO RICO AND THE U.S. AND BRITISH VIRGIN ISLANDS THIS AFTERNOON.
HURRICANE CONDITIONS ARE EXPECTED OVER PORTIONS OF THE DOMINICAN
REPUBLIC BY FRIDAY...AND OVER PORTIONS OF HAITI FRIDAY OR FRIDAY
NIGHT. TROPICAL STORM CONDITIONS ARE POSSIBLE OVER THE
SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS ISLANDS BY LATE
FRIDAY.
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 2 TO 4 INCHES...WITH MAXIMUM
AMOUNTS OF 10 INCHES OVER HIGHER TERRAIN...ARE POSSIBLE OVER PUERTO
RICO AND THE VIRGIN ISLANDS. TOTAL RAIN ACCUMULATIONS OF 4 TO 8
INCHES ARE POSSIBLE OVER THE NORTHERN WINDWARD ISLANDS AND THE
LEEWARD ISLANDS.
STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS
3 TO 5 FEET ABOVE NORMAL TIDE LEVELS IN AREAS OF ONSHORE WINDS ALONG
THE COAST OF HISPANIOLA. A STORM SURGE WILL RAISE WATER LEVELS BY
AS MUCH AS 1 TO 3 FEET ABOVE NORMAL TIDE LEVELS IN THE NORTHERN
LEEWARD ISLANDS...PUERTO RICO...AND THE U.S. AND BRITISH VIRGIN
ISLANDS. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY
DANGEROUS WAVES.
SURF...DANGEROUS SURF AND RIP CURRENT CONDITIONS WILL AFFECT THE
WINDWARD ISLANDS...LEEWARD ISLANDS...VIRGIN ISLANDS...AND PUERTO
RICO DURING THE NEXT COUPLE OF DAYS. PLEASE CONSULT PRODUCTS FROM
YOUR LOCAL WEATHER OFFICE FOR MORE INFORMATION.
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...500 PM AST.
$$
FORECASTER BEVEN
