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#8305 (Received by flhurricane at: 1:45 PM 14.Sep.2004) 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 |