[Tropical] Public Tropical Cyclone Advisory

[EMWIN Server]

WTNT34 KNHC 260858
TCPAT4

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

...IRENE SLIGHTLY WEAKER...WARNINGS AND WATCHES EXTENDED NORTHWARD
ALONG THE U. S. EAST COAST...


SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...29.3N 77.2W
ABOUT 420 MI...675 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...942 MB...27.82 INCHES


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

THE HURRICANE WATCH FROM THE NORTH CAROLINA/VIRGINIA BORDER TO SANDY
HOOK NEW JERSEY...INCLUDING DELAWARE BAY AND CHESAPEAKE BAY SOUTH
OF SMITH POINT IS CHANGED TO A HURRICANE WARNING.

THE TROPICAL STORM WATCH FOR CHESAPEAKE BAY FROM SMITH POINT
NORTHWARD AND THE TIDAL POTOMAC IS CHANGED TO A TROPICAL STORM
WARNING.

A HURRICANE WATCH HAS BEEN ISSUED FROM NORTH OF SANDY HOOK NEW
JERSEY TO THE MOUTH OF THE MERRIMACK RIVER...INCLUDING LONG
ISLAND...LONG ISLAND SOUND...BLOCK ISLAND...MARTHAS VINEYARD AND
NANTUCKET.

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 TO THE MOUTH OF THE MERRIMACK RIVER...
INCLUDING LONG ISLAND...LONG ISLAND SOUND...BLOCK ISLAND...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 500 AM EDT...0900 UTC...THE CENTER OF HURRICANE IRENE WAS LOCATED
NEAR LATITUDE 29.3 NORTH...LONGITUDE 77.2 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.

REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS ARE NOW 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.  NOAA
BUOY 41010 LOCATED ABOUT 140 MILES...220 KM EAST OF CAPE CANAVERAL
FLORIDA RECENTLY REPORTED A SUSTAINED WIND OF 56 MPH...90 KM/H...
AND A WIND GUST OF 74 MPH...119 KM/H.

THE MINIMUM CENTRAL PRESSURE ESTIMATED FROM HURRICANE HUNTER
AIRCRAFT DATA IS 942 MB...27.82 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE SUBSIDING OVER THE NORTHWESTERN
BAHAMAS. 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.

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...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 INTERMEDIATE ADVISORY...800 AM EDT.
NEXT COMPLETE ADVISORY...1100 AM EDT.

$$
FORECASTER BEVEN

WWWW
This weather bulletin was brought to you by:
www.nashvilleweather.net