Nouvelles des Navigateurs

Ce blogue a été conçu par Nycole - VE2KOU et se veut un point de rencontre
entre les navigateurs, familles et amis du Réseau du Capitaine et de la CONAM.

samedi 27 octobre 2012

SANDY - MISE À JOUR 17 HRES

HURRICANE SANDY ADVISORY NUMBER 22


NWS NATIONAL HURRICANE CENTER MIAMI FL AL182012

500 PM EDT SAT OCT 27 2012



...HIGH WIND WATCHES AND WARNINGS ARE IN EFFECT FOR THE MID-ATLANTIC STATES AND SOUTHERN NEW ENGLAND... SIGNIFICANT STORM SURGE IS ALSO EXPECTED...


SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION

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LOCATION...30.2N 75.2W

ABOUT 335 MI...540 KM ESE OF CHARLESTON SOUTH CAROLINA

ABOUT 345 MI...555 KM S OF CAPE HATTERAS NORTH CAROLINA

MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H

PRESENT MOVEMENT...NE OR 35 DEGREES AT 13 MPH...20 KM/H

MINIMUM CENTRAL PRESSURE...961 MB...28.38 INCHES


WATCHES AND WARNINGS

--------------------

CHANGES WITH THIS ADVISORY...



THE BERMUDA WEATHER SERVICE HAS REPLACED THE TROPICAL STORM

WATCH WITH A TROPICAL STORM WARNING FOR BERMUDA.

THE GOVERNMENT OF THE BAHAMAS HAS DISCONTINUED ALL TROPICAL

STORM WARNINGS.



SUMMARY OF WATCHES AND WARNINGS IN EFFECT...


A TROPICAL STORM WARNING IS IN EFFECT FOR...

* SOUTH SANTEE RIVER SOUTH CAROLINA TO DUCK NORTH CAROLINA

* PAMLICO AND ALBEMARLE SOUNDS

* BERMUDA



A TROPICAL STORM WATCH IS IN EFFECT FOR...

* SAVANNAH RIVER TO SOUTH SANTEE RIVER



IN ADDITION...HIGH WIND WARNINGS ARE IN EFFECT FOR PORTIONS OF

SOUTHEASTERN VIRGINIA. HIGH WIND WATCHES ARE IN EFFECT FOR MUCH

OF THE MID-ATLANTIC STATES AND SOUTHERN NEW ENGLAND. SEE STATEMENTS

FROM LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICES.


DISCUSSION AND 48-HOUR OUTLOOK

------------------------------

AT 500 PM EDT...2100 UTC...THE CENTER OF HURRICANE SANDY WAS LOCATED

NEAR LATITUDE 30.2 NORTH...LONGITUDE 75.2 WEST. SANDY IS MOVING

TOWARD THE NORTHEAST NEAR 13 MPH...20 KM/H...AND THIS GENERAL MOTION

IS FORECAST TO CONTINUE THROUGH SUNDAY.

A TURN TOWARD THE NORTH IS FORECAST SUNDAY NIGHT...FOLLOWED BY A TURN TOWARD THE NORTH-NORTHWEST ON MONDAY. ON THE FORECAST TRACK THE CENTER OF SANDYWILL MOVE PARALLEL TO THE SOUTHEAST COAST OF THE UNITED STATES THROUGH THE WEEKEND...AND APPROACH THE COAST OF THE MID-ATLANTIC
STATES LATE MONDAY.



MAXIMUM SUSTAINED WINDS REMAIN NEAR 75 MPH...120 KM/H...WITH HIGHER

GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT COUPLE

OF DAYS.



HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 105 MILES...165 KM...FROM

THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 520

MILES...835 KM. NOAA BUOY 41013...LOCATED ABOUT 35 MILES...

SOUTH-SOUTHEAST OF CAPE LOOKOUT NORTH CAROLINA RECENTLY REPORTED A

SUSTAINED WIND OF 47 MPH...76 KM/H...AND A WIND GUST OF 58 MPH...

94 KM/H.



THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 961 MB...28.38 INCHES.





HAZARDS AFFECTING LAND

----------------------

WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO

REACH THE TROPICAL STORM WARNING AREA IN THE CAROLINAS WITHIN THE

NEXT FEW HOURS...AND SPREAD NORTHWARD TONIGHT AND SUNDAY. TROPICAL

STORM CONDITIONS ARE POSSIBLE IN THE WATCH AREAS THROUGH TONIGHT.

GALE FORCE WINDS ARE EXPECTED TO ARRIVE ALONG PORTIONS OF THE

MID-ATLANTIC COAST BY LATE SUNDAY OR SUNDAY NIGHT AND REACH LONG

ISLAND AND SOUTHERN NEW ENGLAND BY MONDAY MORNING. WINDS TO NEAR

HURRICANE FORCE COULD REACH THE MID-ATLANTIC STATES...INCLUDING

LONG ISLAND...BY LATE MONDAY.



STORM SURGE...THE COMBINATION OF A DANGEROUS STORM SURGE AND THE

TIDE WILL CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY

RISING WATERS. THE WATER COULD REACH THE FOLLOWING DEPTHS ABOVE

GROUND IF THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE...



FL EAST COAST NORTH OF CAPE CANAVERAL...1 TO 2 FT

NC SOUTH OF SURF CITY...1 TO 3 FT

NC NORTH OF SURF CITY INCLUDING PAMLICO/ALBERMARLE SNDS...3 TO 5 FT

SE VA AND DELMARVA INCLUDING LOWER CHESAPEAKE BAY...2 TO 4 FT

UPPER AND MIDDLE CHESAPEAKE BAY...1 TO 2 FT

OCEAN CITY MD TO THE CT/RI BORDER...4 TO 8 FT

LONG ISLAND SOUND...RARITAN BAY...AND DELAWARE BAY...4 TO 8 FT



SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE TIMING OF THE SURGE

AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT DISTANCES.

GIVEN THE LARGE WIND FIELD ASSOCIATED WITH SANDY...ELEVATED WATER

LEVELS COULD SPAN MULTIPLE TIDE CYCLES RESULTING IN REPEATED AND

EXTENDED PERIODS OF COASTAL AND BAYSIDE FLOODING. IN ADDITION...

ELEVATED WATERS COULD OCCUR FAR REMOVED FROM THE CENTER OF SANDY.

FURTHERMORE...THESE CONDITIONS WILL OCCUR REGARDLESS OF WHETHER

SANDY IS A TROPICAL OR POST-TROPICAL CYCLONE. FOR INFORMATION

SPECIFIC TO YOUR AREA...PLEASE SEE PRODUCTS ISSUED BY YOUR LOCAL

NATIONAL WEATHER SERVICE OFFICE.



RAINFALL...RAINFALL TOTALS OF 3 TO 6 INCHES ARE EXPECTED OVER FAR

EASTERN NORTH CAROLINA...WITH ISOLATED MAXIMUM TOTALS OF 8 INCHES

POSSIBLE. RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE EXPECTED OVER

PORTIONS OF THE MID-ATLANTIC STATES...INCLUDING THE DELMARVA

PENINSULA...WITH ISOLATED MAXIMUM AMOUNTS OF 12 INCHES POSSIBLE.

RAINFALL AMOUNTS OF 1 TO 3 INCHES WITH ISOLATED MAXIMUM AMOUNTS OF

5 INCHES ARE POSSIBLE ACROSS PARTS OF SOUTHERN NEW YORK INTO NEW

ENGLAND.



SURF...DANGEROUS SURF CONDITIONS WILL CONTINUE FROM FLORIDA THROUGH

THE CAROLINAS FOR THE NEXT COUPLE OF DAYS AND SPREAD INTO THE MID-

ATLANTIC AND NORTHEASTERN STATES BY SUNDAY.





NEXT ADVISORY

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NEXT INTERMEDIATE ADVISORY...800 PM EDT.

NEXT COMPLETE ADVISORY...1100 PM E

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