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#31686 (Received by flhurricane at: 3:14 AM 10.Jul.2005) TCPAT4 BULLETIN HURRICANE DENNIS INTERMEDIATE ADVISORY NUMBER 23B NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2 AM CDT SUN JUL 10 2005 ...EXTREMELY DANGEROUS HURRICANE DENNIS WITH 145 MPH WINDS... A HURRICANE WARNING REMAINS IN EFFECT FOR PORTIONS OF THE NORTHERN AND NORTHEASTERN GULF COAST FROM THE STEINHATCHEE RIVER WESTWARD TO THE MOUTH OF THE PEARL RIVER. A TROPICAL STORM WARNING REMAINS IN EFFECT ALONG THE FLORIDA WEST COAST FROM EAST OF THE STEINHATCHEE RIVER SOUTHWARD TO BONITA BEACH...AND FOR THE LOWER FLORIDA KEYS WEST OF SEVEN MILE BRIDGE. A TROPICAL STORM WARNING IS ALSO IN EFFECT FOR THE SOUTHEASTERN LOUISIANA COAST WEST OF THE MOUTH OF THE PEARL RIVER TO GRAND ISLE...INCLUDING METROPOLITAN NEW ORLEANS AND LAKE PONCHARTRAIN. A HURRICANE OR TROPICAL STORM WARNING MEANS THAT HURRICANE OR TROPICAL STORM CONDITIONS...RESPECTIVELY...ARE EXPECTED WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION IN THE HURRICANE WARNING AREA. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE. AT 2 AM CDT...0700Z...THE CENTER OF HURRICANE DENNIS WAS LOCATED NEAR LATITUDE 27.4 NORTH...LONGITUDE 85.9 WEST OR ABOUT 195 MILES SOUTH OF PANAMA CITY FLORIDA AND ABOUT 275 MILES SOUTHEAST OF BILOXI MISSISSIPPI. DENNIS IS MOVING TOWARD THE NORTHWEST NEAR 14 MPH. A GRADUAL TURN TOWARD THE NORTH-NORTHWEST IS EXPECTED TODAY. THIS MOTION WILL BRING THE CENTER OF DENNIS ACROSS THE NORTHERN GULF COAST LATER TODAY. REPORTS FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INDICATE THAT MAXIMUM SUSTAINED WINDS ARE NOW NEAR 145 MPH...WITH HIGHER GUSTS. DENNIS IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON SCALE. SOME FLUCTUATIONS IN STRENGTH ARE LIKELY BEFORE LANDFALL. HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 40 MILES FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 230 MILES. HURRICANE FORCE WINDS ASSOCIATED WITH DENNIS MAY OCCUR AS FAR AS 150 TO 175 MILES INLAND ALONG THE TRACK OF THE HURRICANE. AN AIR FORCE HURRICANE HUNTER PLANE RECENTLY REPORTED A MINIMUM CENTRAL PRESSURE OF 934 MB...27.58 INCHES. STORM SURGE FLOODING OF 14 TO 17 FEET ABOVE NORMAL TIDE LEVELS... ACCOMPANIED BY LARGE AND DANGEROUS BATTERING WAVES...IS POSSIBLE NEAR AND TO THE EAST OF WHERE THE CENTER OF DENNIS CROSSES THE NORTHERN GULF COAST ON SUNDAY. A STORM SURGE OF 2 TO 4 FEET IS POSSIBLE ALONG THE SOUTHWESTERN COAST OF FLORIDA THIS MORNING. DENNIS IS EXPECTED TO PRODUCE TOTAL RAINFALL ACCUMULATIONS OF 5 TO 8 INCHES FROM THE FLORIDA PANHANDLE...SOUTHERN ALABAMA...AND SOUTHERN MISSISSIPPI NORTHWESTWARD INTO NORTHERN MISSISSIPPI...WITH ISOLATED MAXIMUM AMOUNTS OF 12 INCHES POSSIBLE NEAR WHERE DENNIS MAKES LANDFALL ON THE GULF COAST. ADDITIONAL RAINFALL ACCUMULATIONS OF 2 TO 4 INCHES ARE POSSIBLE OVER THE FLORIDA WEST COAST...WITH 1 TO 3 INCHES POSSIBLE OVER THE REMAINDER OF THE FLORIDA PENINSULA. ISOLATED TORNADOES WILL BE POSSIBLE THIS MORNING OVER PORTIONS OF NORTH-CENTRAL AND NORTHERN FLORIDA...AND THE FLORIDA PANHANDLE. REPEATING THE 2 AM CDT POSITION...27.4 N... 85.9 W. MOVEMENT TOWARD...NORTHWEST NEAR 14 MPH. MAXIMUM SUSTAINED WINDS...140 MPH. MINIMUM CENTRAL PRESSURE... 934 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 4 AM CDT. FORECASTER PASCH |