publie à toutes les trois heures des bulletins sur l'ouragan Irene, dont l'oeil était tout à L'heure situé à 130 km à l'est-sud-est de Nassau (Bahamas).
En traversant aux frontières du Canada la nuit prochaine , l'ouragan Irène aura selon les prévisions rétrogradé en tempête post-tropicale. les précipitations abondantes accompagnant cette tempête qui provoquera des vents de 60 à 90 km/h., provoqueront probalement des inondations localisées.
Au moment d'écrire ces lignes, (08h00 HNE) Voici une analyse et une prévision pour les 48 prochaines heures du NHC (en anglais)
AT 800 AM EDT...1200 UTC...THE CENTER OF HURRICANE IRENE WAS LOCATED
BY AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT AND NOAA DOPPLER
RADAR NEAR LATITUDE 40.3 NORTH...LONGITUDE 74.1 WEST. IRENE IS
MOVING TOWARD THE NORTH-NORTHEAST NEAR 25 MPH...41 KM/H...AND THIS
MOTION WITH A CONTINUED GRADUAL INCREASE IN FORWARD SPEED IS
EXPECTED DURING THE NEXT DAY OR SO. ON THE FORECAST TRACK...THE
CENTER OF IRENE WILL MOVE NEAR NEW YORK CITY THIS MORNING...AND MOVE
INLAND OVER SOUTHERN NEW ENGLAND BY THIS AFTERNOON. IRENE IS
FORECAST TO MOVE INTO EASTERN CANADA TONIGHT.
MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/H...WITH
HIGHER GUSTS. IRENE IS A CATEGORY ONE HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE WIND SCALE. IRENE IS FORECAST TO WEAKEN
AND BECOME A POST-TROPICAL CYCLONE BY TONIGHT OR EARLY MONDAY.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 125 MILES...205 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 320 MILES...520 KM. GROTON CONNECTICUT RECENTLY REPORTED SUSTAINED
WINDS OF 39 MPH...63 KM/H...AND A WIND GUST TO 54 MPH...87 KM/H.
BATTERY PARK NEW YORK CITY HAS RECENTLY REPORTED A TOTAL WATER LEVEL NEAR 8.6 FEET.
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY THE HURRICANE HUNTER AIRCRAFT WAS 963 MB...28.44 INCHES.
HAZARDS AFFECTING LAND
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STORM SURGE...AN EXTREMELY DANGEROUS STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 4 TO 8 FEET ABOVE GROUND LEVEL WITHIN THE HURRICANE WARNING AREA. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE...DESTRUCTIVE...AND LIFE-THREATENING WAVES. HIGHER THAN NORMAL ASTRONOMICAL TIDES ARE OCCURRING THIS WEEKEND. COASTAL AND RIVER FLOODING WILL BE HIGHEST IN AREAS WHERE THE PEAK SURGE OCCURS AROUND THE TIME OF HIGH TIDE. STORM TIDE AND SURGE VALUES ARE VERY LOCATION-SPECIFIC...AND USERS ARE URGED TO CONSULT PRODUCTS ISSUED BY THEIR LOCAL NATIONAL WEATHER SERVICE OFFICES. WATER LEVELS IN THE CHESAPEAKE BAY WILL GRADUALLY SUBSIDE THIS MORNING.
RAINFALL...IRENE IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF 5 TO 10 INCHES...WITH ISOLATED MAXIMUM AMOUNTS OF 15 INCHES...FROM EASTERN PENNSYLVANIA...DELAWARE AND NEW JERSEY INTO EASTERN NEW YORK AND INTERIOR NEW ENGLAND. THESE RAINS...COMBINED WITH HEAVY RAINS OVER THE PAST FEW WEEKS...COULD CAUSE WIDESPREAD FLOODING... LIFE-THREATENING FLASH FLOODS...AND SIGNIFICANT UPROOTING OF TREES DUE TO RAIN-SOFTENED GROUNDS.
WIND...TROPICAL STORM FORCE WINDS AND HURRICANE FORCE WINDS... ESPECIALLY IN GUSTS...WILL CONTINUE TO SPREAD NORTHWARD INTO SOUTHERN NEW ENGLAND THIS MORNING. WINDS AFFECTING THE UPPER FLOORS OF HIGH-RISE BUILDINGS WILL BE SIGNIFICANTLY STRONGER THAN THOSE NEAR GROUND LEVEL.
TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER NORTHERN NEW JERSEY...SOUTHEASTERN NEW YORK...AND EXTREME SOUTHERN NEW ENGLAND THROUGH THIS MORNING.
SURF...LARGE SWELLS GENERATED BY IRENE ARE AFFECTING MUCH OF THE EAST COAST OF THE UNITED STATES. THESE SWELLS WILL CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS.
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