Hurricane IVAN

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HURRICANE IVAN ADVISORY NUMBER  56
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
4 AM CDT THU SEP 16 2004
 
...IVAN SPREADING HURRICANE FORCE WINDS INLAND AFTER MAKING LANDFALL
NEAR GULF SHORES ALABAMA...

AT 4 AM CDT...0900Z...THE HURRICANE WARNING FOR THE CITY OF NEW
ORLEANS AND LAKE PONTCHARTRAIN...AND ALL WATCHES AND WARNINGS FROM
WEST OF GRAND ISLE TO MORGAN CITY...HAVE BEEN DISCONTINUED.
ALSO...THE HURRICANE WARNING FROM THE MOUTH OF THE PEARL RIVER TO
GRAND ISLE HAS BEEN DOWNGRADED TO A TROPICAL STORM WARNING.
 
A HURRICANE WARNING REMAINS IN EFFECT FROM THE MOUTH OF THE PEARL
RIVER TO APALACHICOLA FLORIDA.
 
A TROPICAL STORM WARNING REMAINS IN EFFECT FROM EAST OF APALACHICOLA
TO YANKEETOWN FLORIDA AND FOR THE MOUTH OF THE PEARL RIVER TO GRAND
ISLE.
 
AT 4 AM CDT...0900Z...THE EYE OF HURRICANE IVAN WAS LOCATED INLAND
NEAR LATITUDE 30.9 NORTH...LONGITUDE  87.7 WEST OR ABOUT 40 MILES
NORTHWEST OF PENSACOLA FLORIDA.
 
IVAN IS MOVING SLIGHTLY EAST OF DUE NORTH NEAR 14 MPH AND THIS
MOTION IS EXPECTED TO CONTINUE DURING THE NEXT 24 HOURS.
 
MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 115 MPH WITH HIGHER
GUSTS.  A GRADUAL WEAKENING SHOULD CONTINUE AS THE HURRICANE MOVES
INLAND. OCCUPANTS OF HIGH-RISE BUILDINGS WITHIN THE HURRICANE
WARNING AREA CAN EXPECT HIGHER WINDS THAN THOSE EXPERIENCED AT THE
SURFACE...ABOUT ONE SAFFIR-SIMPSON CATEGORY HIGHER AT THE TOP OF A
30-STORY BUILDING.  HURRICANE FORCE WINDS COULD SPREAD INLAND UP TO
ABOUT 150 MILES NEAR THE PATH OF THE CENTER. 

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 105 MILES FROM THE
CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 290
MILES.
 
THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY A RECONNAISSANCE
PLANE WAS 947 MB...27.96 INCHES.

COASTAL STORM SURGE FLOODING OF 10 TO 16 FEET ABOVE NORMAL TIDE
LEVELS...ALONG WITH LARGE AND DANGEROUS BATTERING WAVES...ARE 
STILL OCCURRING NEAR TO THE EAST AND SOUTH OF WHERE THE CENTER MADE
LANDFALL.  
 
DANGEROUS SURF CONDITIONS...INCLUDING RIP CURRENTS...ARE LIKELY
ELSEWHERE ALONG THE FLORIDA GULF COAST.
 
RAINFALL ACCUMULATIONS OF 10 TO 15 INCHES...WITH ISOLATED HIGHER
AMOUNTS...CAN BE EXPECTED IN ASSOCIATION WITH IVAN.
 
TORNADOES ARE POSSIBLE OVER THE NEXT 24 HOURS IN SOUTHERN ALABAMA...
THE FLORIDA PANHANDLE AND BIG BEND AREA...AND SOUTHWESTERN GEORGIA.
 
REPEATING THE 4 AM CDT POSITION...30.9 N... 87.7 W.  MOVEMENT
TOWARD...NORTH NEAR 14 MPH.  MAXIMUM SUSTAINED WINDS...115 MPH. 
MINIMUM CENTRAL PRESSURE... 947 MB.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.
 
AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 7 AM CDT FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 10 AM
CDT.
 
FORECASTER AVILA
 
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