041
WTNT31 KNHC 090833
TCPAT1
BULLETIN
HURRICANE IDA ADVISORY NUMBER 22
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112009
300 AM CST MON NOV 09 2009
..IDA WEAKENS SLIGHTLY
A HURRICANE WARNING REMAINS IN EFFECT FOR THE NORTHERN GULF COAST
FROM PASCAGOULA MISSISSIPPI EASTWARD TO INDIAN PASS FLORIDA. A
HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA WITHIN 24 HOURS. PREPARATIONS TO
PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
A TROPICAL STORM WARNING AND A HURRICANE WATCH REMAIN IN EFFECT FOR
THE NORTHERN GULF COAST FROM GRAND ISLE LOUISIANA EASTWARD TO WEST
OF PASCAGOULA MISSISSIPPI...INCLUDING NEW ORLEANS AND LAKE
PONTCHARTRAIN. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM
CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 24
HOURS. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 24 HOURS.
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE NORTHERN GULF
COAST FROM EAST OF INDIAN PASS FLORIDA TO AUCILLA RIVER FLORIDA.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.
AT 300 AM CST...0900 UTC...THE CENTER OF HURRICANE IDA WAS LOCATED
NEAR LATITUDE 25.1 NORTH...LONGITUDE 87.9 WEST OR ABOUT 285 MILES...
460 KM...SOUTH-SOUTHEAST OF THE MOUTH OF THE MISSISSIPPI RIVER AND
ABOUT 375 MILES...605 KM...SOUTH OF PENSACOLA FLORIDA.
IDA IS MOVING TOWARD THE NORTH-NORTHWEST NEAR 16 MPH...26 KM/HR. A
TURN TOWARD THE NORTH AND AN INCREASE IN FORWARD SPEED ARE EXPECTED
DURING THE NEXT 24 HOURS...FOLLOWED BY A TURN TOWARD THE NORTHEAST
ON TUESDAY. ON THE FORECAST TRACK...IDA IS EXPECTED TO MOVE ACROSS
THE GULF OF MEXICO TODAY...AND APPROACH THE NORTHERN GULF COAST
TONIGHT OR EARLY TUESDAY.
DATA FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE
THAT MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 90 MPH...150
KM/HR...WITH HIGHER GUSTS. IDA IS A CATEGORY ONE HURRICANE ON THE
SAFFIR-SIMPSON SCALE. ADDITIONAL WEAKENING IS FORECAST DURING THE
NEXT 24 HOURS. HOWEVER...IDA IS STILL EXPECTED TO BE A HURRICANE
WHEN IT APPROACHES THE GULF COAST TONIGHT OR EARLY TUESDAY.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 35 MILES...55 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 200
MILES...325 KM.
THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON DATA FROM THE
HURRICANE HUNTER AIRCRAFT IS 988 MB...29.18 INCHES.
RAINS WILL BE INCREASING WELL IN ADVANCE OF IDA ACROSS THE CENTRAL
AND EASTERN GULF COAST...BUT WILL BECOME STEADIER AND HEAVIER
LATER TODAY INTO TUESDAY. TOTAL STORM ACCUMULATIONS OF 3 TO 6
INCHES WITH ISOLATED MAXIMUM STORM TOTALS OF 8 INCHES WILL BE
POSSIBLE THROUGH TUESDAY FROM THE CENTRAL AND EASTERN GULF COAST
NORTHWARD INTO THE EASTERN PORTIONS OF THE TENNESSEE VALLEY AND THE
SOUTHERN APPALACHIANS.
A DANGEROUS STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 4 TO 6
FEET ABOVE GROUND LEVEL ALONG THE COAST NEAR AND TO THE EAST OF
WHERE THE CENTER MAKES LANDFALL. NEAR THE COAST...THE SURGE WILL BE
ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES.
..SUMMARY OF 300 AM CST INFORMATION
LOCATION...25.1N 87.9W
MAXIMUM SUSTAINED WINDS...90 MPH
PRESENT MOVEMENT...NORTH-NORTHWEST OR 335 DEGREES AT 16 MPH
MINIMUM CENTRAL PRESSURE...988 MB
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 600 AM CST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 900
AM CST.
FORECASTER BRENNAN/KIMBERLAIN
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