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Tropical Storm Gordon Public Advisory Number 10A
2018-09-05 01:55:05| National Hurricane Center (Atlantic)
Issued at 700 PM CDT Tue Sep 04 2018 924 WTNT32 KNHC 042355 TCPAT2 BULLETIN Tropical Storm Gordon Intermediate Advisory Number 10A NWS National Hurricane Center Miami FL AL072018 700 PM CDT Tue Sep 04 2018 ...TROPICAL-STORM-FORCE WINDS SPREADING ONSHORE ALONG THE ALABAMA AND WESTERN FLORIDA PANHANDLE COASTLINES... SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...29.7N 87.9W ABOUT 75 MI...125 KM SE OF BILOXI MISSISSIPPI ABOUT 70 MI...115 KM S OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Shell Beach to Dauphin Island A Storm Surge Watch is in effect for... * West of Shell Beach to the Mouth of the Mississippi River * East of Dauphin Island to Navarre A Hurricane Warning is in effect for... * Mouth of the Pearl River to the Alabama-Florida Border A Tropical Storm Warning is in effect for... * West of the Mouth of the Pearl River to the Mouth of the Mississippi River, including Lake Pontchartrain * Alabama-Florida Border to Okaloosa-Walton County Line A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning areas. 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. DISCUSSION AND OUTLOOK ---------------------- At 700 PM CDT (0000 UTC), the center of Tropical Storm Gordon was located by NOAA Doppler weather radars and a NOAA Hurricane Hunter aircraft near latitude 29.7 North, longitude 87.9 West. Gordon is moving toward the northwest near 14 mph (22 km/h). A northwestward motion with some decrease in forward speed is expected over the next couple of days. On the forecast track, the center of Gordon will make landfall along the north-central Gulf Coast within the hurricane warning area this evening or tonight, and then move inland over the lower Mississippi Valley through Wednesday. A gradual turn toward the north-northwest and north is forecast to occur on Friday. Maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Gordon could still become a hurricane before landfall occurs along the north-central Gulf Coast. Rapid weakening is forecast after Gordon moves inland. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. A NOAA buoy located about 10 miles south of Orange Beach, Alabama has recently reported sustained winds of 54 mph (86 km/h) with a gust to 60 mph (97 km/h). A NOAA Coastal Marine Observing site on Dauphin Island, Alabama has measured a sustained wind of 45 mph (72 km/h) with a gust to 54 mph (87 km/h). A wind gust to 39 mph (63 km/h) was recently reported at Gulf Shores, Alabama. The latest minimum central pressure estimated from NOAA reconnaissance aircraft data is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Mouth of the Pearl River to Dauphin Island...3 to 5 ft. Navarre Florida to Dauphin Island, including Mobile Bay...2 to 4 ft. Mouth of the Pearl River to the Mouth of Mississippi River...2 to 4 ft. The deepest water will occur along the immediate coast near and to the east of the landfall location, where the surge will be accompanied by large waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Gordon is expected to produce total rain accumulations of 4 to 8 inches over the western Florida Panhandle, southwest Alabama, southern and central Mississippi, northeastern Louisiana, and southern Arkansas, with isolated maximum amounts of 12 inches through late Thursday. This rainfall will cause flash flooding across portions of these areas. WIND: Tropical storm conditions will continue to spread onshore during the next several hours within portions of the warning area, with hurricane conditions forecast by this evening in the hurricane warning area. TORNADOES: A couple of tornadoes are possible through tonight near the coasts of Mississippi, Alabama, and the Florida Panhandle. NEXT ADVISORY ------------- Next complete advisory at 1000 PM CDT. $$ Forecaster Brown
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