Hurricane Irene
Public Advisory 18A
000
WTNT34 KNHC 242354
TCPAT4
BULLETIN
HURRICANE IRENE INTERMEDIATE ADVISORY NUMBER 18A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL092011
800 PM EDT WED AUG 24 2011
...EYE OF DANGEROUS HURRICANE IRENE MOVING BETWEEN RUM CAY AND LONG
ISLAND IN THE BAHAMAS...
SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
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LOCATION...23.5N 75.0W
ABOUT 185 MI...295 KM SE OF NASSAU IN THE BAHAMAS
ABOUT 810 MI...1300 KM S OF CAPE HATTERAS NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...954 MB...28.17 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
THE TROPICAL STORM WARNING FOR THE TURK AND CAICOS ISLANDS HAS BEEN
DISCONTINUED.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A HURRICANE WARNING IS IN EFFECT FOR...
* THE SOUTHEASTERN...CENTRAL...AND NORTHWESTERN BAHAMAS
INTERESTS FROM THE CAROLINAS NORTHWARD THROUGH NEW ENGLAND SHOULD
MONITOR THE PROGRESS OF IRENE.
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
------------------------------
THE EYE OF HURRICANE IRENE IS MOVING BETWEEN LONG ISLAND AND RUM CAY
IN THE BAHAMAS...AND AT 800 PM EDT...0000 UTC...IT WAS LOCATED NEAR
LATITUDE 23.5 NORTH...LONGITUDE 75.0 WEST. IRENE IS MOVING TOWARD
THE NORTHWEST NEAR 12 MPH...19 KM/H...AND THIS GENERAL MOTION IS
EXPECTED TO CONTINUE THROUGH TONIGHT. A TURN TOWARD THE
NORTH-NORTHWEST AND THEN TOWARD THE NORTH ARE EXPECTED THURSDAY AND
THURSDAY NIGHT. ON THE FORECAST TRACK...THE CORE OF IRENE WILL
MOVE ACROSS THE CENTRAL BAHAMAS TONIGHT AND OVER THE NORTHWESTERN
BAHAMAS ON THURSDAY.
MAXIMUM SUSTAINED WINDS ARE NEAR 120 MPH...195 KM/H...WITH HIGHER
GUSTS. IRENE IS A CATEGORY THREE HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. SOME ADDITIONAL STRENGTHENING IS FORECAST
DURING THE NEXT DAY OR SO...AND IRENE COULD BECOME A CATEGORY FOUR
HURRICANE BY THURSDAY. AN AIR FORCE PLANE IS CURRENTLY APPROACHING
IRENE.
IRENE IS A LARGE TROPICAL CYCLONE. HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 60 MILES...95 KM...FROM THE CENTER...AND TROPICAL
STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES...370 KM.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 954 MB...28.17 INCHES. AN
AUTOMATIC WEATHER STATION ON LONG ISLAND IN THE BAHAMAS REPORTED A
MINIMUM PRESSURE OF 969.1 MB...28.62 INCHES AT 700 PM EDT...2300
UTC...AS THE EYE PASSED NEAR THE STATION.
HAZARDS AFFECTING LAND
----------------------
WIND...HURRICANE FORCE WINDS ARE OCCURRING OVER PORTIONS OF THE
SOUTHEASTERN BAHAMAS...AND THESE WINDS WILL SPREAD OVER THE CENTRAL
BAHAMAS LATER TONIGHT. WINDS SHOULD BEGIN TO INCREASE IN THE
NORTHWESTERN BAHAMAS BY LATE TONIGHT...REACHING HURRICANE FORCE BY
THURSDAY.
STORM SURGE...IN AREAS OF ONSHORE WINDS NEAR THE CENTER OF
IRENE...AN EXTREMELY DANGEROUS STORM SURGE WILL RAISE WATER LEVELS
BY AS MUCH AS 7 TO 11 FEET ABOVE NORMAL TIDE LEVELS OVER THE
BAHAMAS. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE
AND DANGEROUS WAVES.
RAINFALL...IRENE IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF 6
TO 12 INCHES OVER THE BAHAMAS DURING THE NEXT 36 HOURS. RAINS WILL
BE DIMINISHING ACROSS THE TURKS AND CAICOS ISLANDS WITH ADDITIONAL
RAINFALL AMOUNTS OF 1 TO 3 INCHES POSSIBLE...BRINGING MAXIMUM STORM
TOTAL TO 6 TO 12 INCHES.
SURF...SWELLS GENERATED BY IRENE WILL BEGIN AFFECTING PORTIONS OF
THE COAST OF THE SOUTHEASTERN UNITED STATES ON THURSDAY. THESE
SWELLS ARE EXPECTED TO CAUSE LIFE-THREATENING SURF AND RIP CURRENT
CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL NATIONAL
WEATHER SERVICE FORECAST OFFICE.
NEXT ADVISORY
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NEXT COMPLETE ADVISORY...1100 PM EDT.
$$
FORECASTER AVILA
