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#453432 (Received by flhurricane at: 1:46 AM 26.Aug.2011) TCPAT4 BULLETIN HURRICANE IRENE INTERMEDIATE ADVISORY NUMBER 23A NWS NATIONAL HURRICANE CENTER MIAMI FL AL092011 200 AM EDT FRI AUG 26 2011 ...IRENE MOVING NORTHWARD AWAY FROM THE BAHAMAS TOWARDS THE NORTH CAROLINA COAST... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...28.7N 77.3W ABOUT 460 MI...740 KM SSW OF CAPE HATTERAS NORTH CAROLINA MAXIMUM SUSTAINED WINDS...115 MPH...185 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... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * THE GRAND BAHAMA AND THE ABACO ISLANDS * THE COAST OF NORTH CAROLINA FROM LITTLE RIVER INLET NORTHWARD TO THE VIRGINIA BORDER...INCLUDING THE PAMLICO...ALBEMARLE...AND CURRITUCK SOUNDS A HURRICANE WATCH IS IN EFFECT FOR... * THE VIRGINIA/NORTH CAROLINA BORDER NORTHWARD TO SANDY HOOK NEW JERSEY...INCLUDING DELAWARE BAY...AND CHESAPEAKE BAY SOUTH OF SMITH POINT A TROPICAL STORM WARNING IS IN EFFECT FOR... * NORTH OF EDISTO BEACH SOUTH CAROLINA TO LITTLE RIVER INLET A TROPICAL STORM WATCH IS IN EFFECT FOR... * 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. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. INTERESTS ELSEWHERE IN THE MID-ATLANTIC STATES AND 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 200 AM EDT...0600 UTC...THE CENTER OF HURRICANE IRENE WAS LOCATED NEAR LATITUDE 28.7 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...IRENE WILL CONTINUE TO MOVE AWAY FROM THE NORTHWESTERN BAHAMAS...AND THE CORE OF THE HURRICANE WILL PASS WELL OFFSHORE OF THE EAST COAST OF CENTRAL AND NORTHERN FLORIDA TODAY. THE HURRICANE IS FORECAST TO APPROACH THE COAST OF NORTH CAROLINA ON SATURDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 115 MPH...185 KM/H...WITH HIGHER GUSTS. IRENE IS A CATEGORY THREE HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE. SOME STRENGTHENING IS POSSIBLE TODAY. IRENE IS A LARGE TROPICAL CYCLONE. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 80 MILES...130 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 51 MPH...83 KM/H... AND A WIND GUST OF 67 MPH...108 KM/H. THE MINIMUM CENTRAL PRESSURE ESTIMATED FROM AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT DATA WAS 942 MB...27.82 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...HURRICANE AND 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 BY SATURDAY. STORM SURGE...ALONG THE EASTERN COAST OF THE UNITED STATES...AN EXTREMELY DANGEROUS STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 5 TO 10 FEET ABOVE GROUND LEVEL WITHIN THE HURRICANE WARNING AREA INCLUDING THE ALBEMARLE AND PAMLICO SOUNDS. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE...DESTRUCTIVE...AND LIFE-THREATENING WAVES. IRENE ALSO HAS THE POTENTIAL TO PRODUCE SIGNIFICANT STORM SURGE FLOODING WITHIN THE HURRICANE WATCH AREA INCLUDING PORTIONS OF THE CHESAPEAKE BAY...TRIBUTARIES...AND THE EASTERN SHORE. RAINFALL...IRENE IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF 6 TO 12 INCHES OVER THE NORTHERN BAHAMAS. STORM TOTAL RAINFALL AMOUNTS OF 6 TO 10 INCHES WITH ISOLATED MAXIMUM AMOUNTS OF 15 INCHES ARE EXPECTED OVER PORTIONS OF EASTERN NORTH CAROLINA AND IN THE MID-ATLANTIC STATES ALONG THE PATH OF IRENE. 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 COMPLETE ADVISORY...500 AM EDT. $$ FORECASTER BEVEN |