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BULLETIN
HURRICANE IRENE INTERMEDIATE ADVISORY NUMBER  24A
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL092011
800 AM EDT FRI AUG 26 2011

...IRENE TAKING AIM AT THE EAST COAST OF THE UNITED STATES...


SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...30.0N 77.3W
ABOUT 375 MI...600 KM SSW OF CAPE HATTERAS NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...945 MB...27.91 INCHES


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

NONE

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* THE GRAND BAHAMA AND THE ABACO ISLANDS
* LITTLE RIVER INLET NORTH CAROLINA NORTHWARD TO SANDY HOOK NEW
JERSEY...INCLUDING THE PAMLICO...ALBEMARLE...AND CURRITUCK
SOUNDS...DELAWARE BAY...AND CHESAPEAKE BAY SOUTH OF SMITH POINT.

A HURRICANE WATCH IS IN EFFECT FOR...
* NORTH OF SANDY HOOK NEW JERSEY TO THE MOUTH OF THE MERRIMACK RIVER
MASSACHUSETTS...INCLUDING NEW YORK CITY...LONG ISLAND...LONG ISLAND
SOUND...BLOCK ISLAND...BOSTON...MARTHAS VINEYARD AND NANTUCKET.

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* NORTH OF EDISTO BEACH SOUTH CAROLINA TO LITTLE RIVER INLET
* CHESAPEAKE BAY FROM SMITH POINT NORTHWARD AND THE TIDAL POTOMAC

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA.  A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF
TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS. 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 HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA.  A WATCH IS TYPICALLY ISSUED 48 HOURS
BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE
WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR
DANGEROUS.

INTERESTS ELSEWHERE IN 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
------------------------------
AT 800 AM EDT...1200 UTC...THE CENTER OF HURRICANE IRENE WAS LOCATED
NEAR LATITUDE 30.0 NORTH...LONGITUDE 77.3 WEST.  IRENE IS MOVING
TOWARD THE NORTH NEAR 14 MPH...22 KM/H...AND THIS MOTION IS
EXPECTED TO CONTINUE DURING THE NEXT 24 HOURS.  A GRADUAL TURN
TOWARD THE NORTH-NORTHEAST SHOULD BEGIN THEREAFTER.  ON THE
FORECAST TRACK...THE CORE OF THE HURRICANE WILL PASS WELL OFF THE
COAST OF NORTHEASTERN FLORIDA TODAY...APPROACH THE COAST OF NORTH
CAROLINA TONIGHT...AND PASS NEAR OR OVER THE NORTH CAROLINA COAST
SATURDAY.  THE HURRICANE IS FORECAST TO MOVE NEAR OR OVER THE
MID-ATLANTIC COAST SATURDAY NIGHT.

MAXIMUM SUSTAINED WINDS ARE NEAR 110 MPH...175 KM/H...WITH
HIGHER GUSTS.  IRENE IS A CATEGORY TWO HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE WIND SCALE.  SOME RE-INTENSIFICATION IS
POSSIBLE TODAY...AND IRENE IS EXPECTED TO BE NEAR THE THRESHOLD
BETWEEN CATEGORY TWO AND THREE AS IT REACHES THE NORTH CAROLINA
COAST.

IRENE IS A LARGE TROPICAL CYCLONE.  HURRICANE FORCE WINDS EXTEND
OUTWARD UP TO 90 MILES...150 KM...FROM THE CENTER...AND TROPICAL
STORM FORCE WINDS EXTEND OUTWARD UP TO 290 MILES...465 KM.

THE MINIMUM CENTRAL PRESSURE ESTIMATED FROM HURRICANE HUNTER
AIRCRAFT DATA IS 945 MB...27.91 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...WINDS WILL SUBSIDE OVER THE NORTHWESTERN BAHAMAS THIS
MORNING. TROPICAL STORM FORCE WINDS ARE EXPECTED WITHIN THE
SOUTHERN PORTION OF THE WARNING AREA ALONG THE UNITED STATES EAST
COAST BY LATE TODAY. HURRICANE FORCE WINDS ARE EXPECTED TO FIRST
REACH THE HURRICANE WARNING AREA TONIGHT OR SATURDAY MORNING...AND
THEN SPREAD NORTHWARD IN THE WARNING AREA THROUGH SATURDAY NIGHT.

STORM SURGE...AN EXTREMELY DANGEROUS STORM SURGE WILL RAISE WATER
LEVELS BY AS MUCH AS 6 TO 11 FEET ABOVE GROUND LEVEL IN THE
HURRICANE WARNING AREA IN NORTH CAROLINA...INCLUDING THE ALBEMARLE
AND PAMLICO SOUNDS. STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH
AS 4 TO 8 FEET ABOVE GROUND LEVEL OVER SOUTHERN POTIONS OF THE
CHESAPEAKE BAY...INCLUDING TRIBUTARIES...AND THE EASTERN SHORE OF
THE DELMARVA PENINSULA.  STORM SURGE WILL RAISE WATER LEVELS BY AS
MUCH AS 3 TO 6 FEET ABOVE GROUND LEVEL ALONG THE JERSEY SHORE.
NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE...
DESTRUCTIVE...AND LIFE-THREATENING WAVES.

RAINFALL...IRENE IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF
6 TO 10 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF 15 INCHES...FROM
EASTERN NORTH CAROLINA INTO SOUTHEASTERN VIRGINA...EASTERN
MARYLAND... DELAWARE...EASTERN PENNSYLVANIA...NEW JERSEY...
SOUTHEASTERN NEW YORK...LONG ISLAND...WESTERN CONNECTICUT...AND
WESTERN MASSACHUSETTS THROUGH MONDAY MORNING. THESE RAINS COULD
CAUSE WIDESPREAD FLOODING AND LIFE-THREATENING FLASH FLOODS.

SURF...LARGE SWELLS GENERATED BY IRENE ARE AFFECTING PORTIONS
OF THE COAST OF THE SOUTHEASTERN UNITED STATES.  THESE SWELLS WILL
CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...1100 AM EDT.

$$
FORECASTER BROWN



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