[Tropical] Public Tropical Cyclone Advisory

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WTNT34 KNHC 141739
TCPAT4
BULLETIN
HURRICANE IVAN INTERMEDIATE ADVISORY NUMBER  49A
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1 PM CDT TUE SEP 14 2004

...LARGE AND DANGEROUS HURRICANE IVAN CONTINUES NORTH-NORTHWESTWARD
THROUGH THE GULF OF MEXICO...

AT 1 PM CDT...1800Z...THE GOVERNMENT OF CUBA HAS DOWNGRADED THE
HURRICANE WARNING TO A TROPICAL STORM WARNING FOR THE PROVINCES OF
PINAR DEL RIO...HAVANA...THE CITY OF HAVANA...AND THE ISLE OF
YOUTH.

A TROPICAL STORM WARNING REMAINS IN EFFECT FROM TULUM TO PROGRESO ON
THE YUCATAN PENINSULA.

A TROPICAL STORM WATCH REMAINS IN EFFECT FOR THE FLORIDA KEYS FROM
THE SEVEN MILE BRIDGE WESTWARD...INCLUDING THE DRY TORTUGAS.

A HURRICANE WATCH REMAINS IN EFFECT FOR THE NORTHERN GULF OF MEXICO
COAST FROM MORGAN CITY LOUISIANA EASTWARD TO ST. MARKS FLORIDA...
INCLUDING GREATER NEW ORLEANS LOUISIANA.  A HURRICANE WARNING WILL
LIKELY BE REQUIRED FOR A PORTION OF THE WATCH AREA LATER THIS
AFTERNOON.

AT 1 PM CDT...1800Z...THE CENTER OF HURRICANE IVAN WAS LOCATED NEAR
LATITUDE 23.7 NORTH...LONGITUDE 86.5 WEST OR ABOUT 405 MILES
SOUTH-SOUTHEAST OF THE MOUTH OF THE MISSISSIPPI RIVER.

IVAN IS MOVING TOWARD THE NORTH-NORTHWEST NEAR  9 MPH...AND THIS
MOTION IS EXPECTED TO CONTINUE OVER THE NEXT 24 HOURS.

MAXIMUM SUSTAINED WINDS ARE NEAR 140 MPH...WITH HIGHER GUSTS. IVAN
REMAINS AN EXTREMELY DANGEROUS CATEGORY FOUR HURRICANE ON THE
SAFFIR-SIMPSON HURRICANE SCALE. FLUCTUATIONS IN INTENSITY ARE
COMMON IN MAJOR HURRICANES AND ARE POSSIBLE OVER THE NEXT 24 HOURS.

IVAN IS A LARGE HURRICANE. HURRICANE FORCE WINDS EXTEND OUTWARD UP
TO 100 MILES FROM THE CENTER...AND TROPICAL STORM FORCE WINDS
EXTEND OUTWARD UP TO 260 MILES.

THE MINIMUM CENTRAL PRESSURE MEASURED BY AN AIR FORCE RESERVE UNIT
RECONNAISSANCE AIRCRAFT WAS  931 MB...27.49 INCHES.

RAINS IN CUBA WILL BE DIMINISHING TODAY.

REPEATING THE 1 PM CDT POSITION...23.7 N... 86.5 W.  MOVEMENT
TOWARD...NORTH-NORTHWEST NEAR  9 MPH.  MAXIMUM SUSTAINED
WINDS...140 MPH.  MINIMUM CENTRAL PRESSURE... 931 MB.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.

THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 4 PM CDT.

FORECASTER FRANKLIN


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