Compact News: Atlantic Hurricane IGOR Advisory Number 54

Tuesday, September 21, 2010

Atlantic Hurricane IGOR Advisory Number 54

Atlantic Hurricane IGOR Advisory Number 54
Tue, 21 Sep 2010 09:41:31 -0500

000
WTNT31 KNHC 211441
TCPAT1
BULLETIN
HURRICANE IGOR ADVISORY NUMBER 54
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010
1100 AM AST TUE SEP 21 2010

...IGOR PASSING VERY NEAR CAPE RACE NEWFOUNDLAND...ALMOST FULLY
EXTRATROPICAL...

SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...46.2N 52.8W
ABOUT 35 MI...60 KM SSE OF CAPE RACE NEWFOUNDLAND
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/HR
PRESENT MOVEMENT...NE OR 35 DEGREES AT 46 MPH...74 KM/HR
MINIMUM CENTRAL PRESSURE...952 MB...28.11 INCHES

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

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WATCH IS IN EFFECT FOR...
* THE COAST OF NEWFOUNDLAND FROM STONES COVE NORTHWARD AND EASTWARD
TO FOGO ISLAND

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* THE COAST OF NEWFOUNDLAND FROM BURGEO NORTHWARD AND EASTWARD
TO TRITON
* THE ISLANDS OF ST-PIERRE AND MIQUELON

A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA WITHIN...IN THIS CASE WITHIN THE NEXT 6 TO
12 HOURS.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED
STATES...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 1100 AM AST...1500 UTC...THE CENTER OF HURRICANE IGOR WAS LOCATED
NEAR LATITUDE 46.2 NORTH...LONGITUDE 52.8 WEST. IGOR IS MOVING
RAPIDLY TOWARD THE NORTHEAST NEAR 46 MPH...74 KM/HR. A TURN TOWARD
THE NORTH-NORTHEAST AND NORTH WITH A DECREASE IN FORWARD SPEED IS
EXPECTED TONIGHT AND EARLY WEDNESDAY. THE EXTRATROPICAL LOW IS
THEN EXPECTED TO TURN TOWARD THE NORTH-NORTHWEST AND NORTHWEST WITH
AN ADDITIONAL DECREASE IN FORWARD SPEED WEDNESDAY NIGHT AND EARLY
THURSDAY. ON THIS TRACK...THE CENTER OF IGOR WILL CONTINUE MOVING
VERY CLOSE TO THE SOUTHEASTERN TIP OF NEWFOUNDLAND TODAY.

MAXIMUM SUSTAINED WINDS REAMIN NEAR 75 MPH...120 KM/HR...WITH HIGHER
GUSTS. IGOR IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. SOME STRENGTHENING IS FORECAST...AND IGOR IS
LIKELY TO BECOME AN INTENSE EXTRATROPICAL CYCLONE LATER TODAY.

THE WIND FIELD ASSOCIATED WITH IGOR CONTINUES TO EXPAND. HURRICANE
FORCE WINDS EXTEND OUTWARD UP TO 85 MILES...140 KM...FROM THE
CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 460
MILES...740 KM.

ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON LAND AND BUOY
OBSERVATIONS NEAR SOUTHEASTERN NEWFOUNDLAND IS 952 MB...28.11
INCHES.

HAZARDS AFFECTING LAND
----------------------
WIND...WINDS OF TROPICAL-STORM-FORCE/GALE-FORCE ARE EXPECTED WITHIN
THE TROPICAL STORM WARNING AREA TODAY. WINDS OF HURRICANE FORCE
ARE POSSIBLE IN THE HURRICANE WATCH AREA.

RAINFALL...THE HEAVY RAINFALL THREAT ASSOCIATED WITH IGOR WILL BE
COMING TO AN END ACROSS NEWFOUNDLAND THIS AFTERNOON AS THE STORM
MOVES RAPIDLY NORTHEASTWARD. ADDITIONAL RAINFALL ACCUMULATIONS OF
1 TO 3 INCHES ARE POSSIBLE OVER EASTERN NEWFOUNDLAND...WITH STORM
TOTAL ACCUMULATIONS OF 4 TO 8 INCHES POSSIBLE.

SURF...LARGE SWELLS WILL CONTINUE TO AFFECT THE EAST COAST OF THE
UNITED STATES THROUGH TODAY AND THE SOUTH-FACING COASTLINES OF
NOVA SCOTIA AND NEWFOUNDLAND FOR THE NEXT FEW DAYS. SWELLS WILL BE
SLOW TO SUBSIDE IN PUERTO RICO...THE VIRGIN ISLANDS...HISPANIOLA...
AND PORTIONS OF THE BAHAMAS DURING THE NEXT COUPLE OF DAYS. THESE
SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENTS.
PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE FOR
ADDITIONAL INFORMATION.

NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...200 PM AST.
NEXT COMPLETE ADVISORY...500 PM AST.

$$
FORECASTER BERG/STEWART

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