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Tropical Depression NINE Public Advisory Number 10A
2016-08-31 07:51:54| National Hurricane Center (Atlantic)
Issued at 100 AM CDT WED AUG 31 2016 000 WTNT34 KNHC 310551 TCPAT4 BULLETIN TROPICAL DEPRESSION NINE INTERMEDIATE ADVISORY NUMBER 10A NWS NATIONAL HURRICANE CENTER MIAMI FL AL092016 100 AM CDT WED AUG 31 2016 ...DEPRESSION MEANDERING OVER THE SOUTH-CENTRAL GULF OF MEXICO... SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...24.3N 88.1W ABOUT 420 MI...675 KM SSW OF APALACHICOLA FLORIDA ABOUT 430 MI...695 KM SW OF TAMPA FLORIDA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 1 MPH...2 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Anclote River to Indian Pass A Tropical Storm Watch is in effect for... * West of Indian Pass to the Walton/Bay County line A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests along the United States east coast from northern Florida through the Carolinas should monitor the progress of this system. 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 48-HOUR OUTLOOK ------------------------------ At 100 AM CDT (0600 UTC), the center of Tropical Depression Nine was located near latitude 24.3 North, longitude 88.1 West. The depression has been drifting westward during the past few hours, but a slow northward motion is expected later today. A faster north-northeast motion is forecast to begin this afternoon or evening. On the forecast track, the center of the tropical cyclone will approach the northwest Florida coast in the watch area on Thursday. Recent satellite wind data indicate that the maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Strengthening is forecast during the next 48 hours, and the depression is expected to become a tropical storm later today, and be near hurricane strength by the time landfall occurs on Thursday. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Hurricane conditions are possible over portions of the Hurricane Watch area by Thursday afternoon. Tropical storm conditions are possible over portions of the Tropical Storm Watch area by Thursday afternoon. 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. There is a possibility of life-threatening inundation within the next 48 hours along the Gulf coast of Florida from Aripeka to Indian Pass. For a depiction of areas at risk, please see the Prototype National Weather Service Storm Surge Watch/Warning Graphic. Persons located within these areas should be prepared to take all necessary actions to protect life and property from rising water. Promptly follow any instructions from local officials. The water could reach the following heights above ground if the peak surge occurs at the time of high tide... Indian Pass to Aripeka...2 to 4 feet Aripeka to Bonita Beach...including Tampa Bay...1 to 2 feet The Prototype National Weather Service Storm Surge Watch/Warning Graphic is a depiction of areas that would qualify for inclusion under a storm surge watch or warning currently under development by the National Weather Service and planned for operational use in 2017. This prototype graphic is available at www.hurricanes.gov/graphics_at4.shtml?wsurge RAINFALL: The depression is expected to produce additional rain accumulations of 3 to 5 inches over western Cuba through Wednesday, with maximum storm total amounts up to 20 inches. These rains could cause life-threatening flash floods and mud slides. Storm total rainfall amounts of 5 to 10 inches are possible over much of the Florida peninsula through Friday, with isolated maximum amounts of 15 inches possible. This rainfall may cause flooding and flash flooding. NEXT ADVISORY ------------- Next complete advisory at 400 AM CDT. $$ Forecaster Brown
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