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Hurricane Dorian Public Advisory Number 46
2019-09-04 22:56:10| National Hurricane Center (Atlantic)
Issued at 500 PM EDT Wed Sep 04 2019 000 WTNT35 KNHC 042056 TCPAT5 BULLETIN Hurricane Dorian Advisory Number 46 NWS National Hurricane Center Miami FL AL052019 500 PM EDT Wed Sep 04 2019 ...AIR FORCE HURRICANE HUNTER REPORTS THAT DORIAN HAS STRENGTHENED A LITTLE... ...EYE NOW EAST OF THE COAST OF SOUTHEASTERN GEORGIA... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...30.6N 79.8W ABOUT 150 MI...245 KM S OF CHARLESTON SOUTH CAROLINA ABOUT 275 MI...440 KM SSW OF WILMINGTON NORTH CAROLINA MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...961 MB...28.38 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Storm Surge Warning has been extended northward to Poquoson, Virginia, including Hampton Roads. A Tropical Storm Warning has been issued from the North Carolina/Virginia border to Chincoteague, Virginia, and for the Chesapeake Bay from Smith Point southward. A Tropical Storm Watch has been issued from north of Chincoteague, Virginia, to Fenwick Island, Delaware, for the Chesapeake Bay from Smith Point to Drum Point, and for the Tidal Potomac River south of Cobb Island. The Storm Surge Warning and Tropical Storm Warning have been discontinued south of the Flagler/Volusia County line. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Flagler/Volusia County line FL to Poquoson VA * Pamlico and Albemarle Sounds * Neuse and Pamlico Rivers * Hampton Roads A Hurricane Warning is in effect for... * North of Savannah River to the North Carolina/Virginia border * Pamlico and Albemarle Sounds A Hurricane Watch is in effect for... * North of Ponte Vedra Beach FL to Savannah River A Tropical Storm Warning is in effect for... * Flagler/Volusia County FL line to Savannah River * North Carolina/Virginia border to Chincoteague VA * Chesapeake Bay from Smith Point southward A Tropical Storm Watch is in effect for... * North of Chincoteague VA to Fenwick Island DE * Chesapeake Bay from Smith Point to Drum Point * Tidal Potomac south of Cobb Island A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours 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 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 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 Warning means that tropical storm conditions are expected within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere along the Mid-Atlantic coast of the United States should continue to monitor the progress of Dorian, as additional watches or warnings may be required later today. Interests in southeastern New England should also monitor the progress of the hurricane. 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 500 PM EDT (2100 UTC), the center of Hurricane Dorian was located near latitude 30.6 North, longitude 79.8 West. Dorian is moving toward the north-northwest near 8 mph (13 km/h). A turn to the north is expected tonight, followed by a turn to the north- northeast on Thursday and a turn toward the northeast on Thursday night. A northeastward motion at a faster forward speed is forecast on Friday. On the forecast track, the center of Dorian will approach the coast of South Carolina tonight, move near or over the coast of South Carolina on Thursday, and move near or over the coast of North Carolina Thursday night and Friday. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 110 mph (175 km/h) with higher gusts. Some fluctuations in strength are possible tonight, followed by slow weakening Thursday through Friday. Hurricane-force winds extend outward up to 70 miles (110 km) from the center and tropical-storm-force winds extend outward up to 195 miles (315 km). NOAA buoy 41008 near the Georgia coast recently reported sustained winds of 54 mph (86 km/h) and a wind gust of 60 mph (97 km/h). The minimum central pressure reported by the Hurricane Hunter is 961 mb (28.38 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are currently affecting portions of the Georgia and southern South Carolina coasts, and should begin along other portions of the South Carolina coast during the next several hours. Tropical storm conditions will begin elsewhere within the Hurricane Warning area in the Carolinas later today, with hurricane conditions beginning by late tonight and Thursday. Tropical storm conditions are expected in the Tropical Storm Warning area in the Mid-Atlantic states by Friday, with tropical storm conditions possible in the Tropical Storm Watch area Friday or Friday night. Tropical storm conditions along the northeastern Florida coast should subside tonight. 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... Isle of Palms to Myrtle Beach SC...5 to 8 ft Savannah River to Isle of Palms SC...4 to 7 ft Myrtle Beach SC to Cape Lookout NC...4 to 7 ft Cape Lookout NC to Duck NC, including Pamlico and Albemarle Sounds and the Neuse and Pamlico Rivers...4 to 6 ft Flagler/Volusia County Line FL to Savannah River...3 to 5 ft Duck NC to Poquoson VA, including Hampton Roads...2 to 4 ft Water levels could begin to rise well in advance of the arrival of strong winds. The surge will be accompanied by large and destructive waves. Surge-related flooding depends on the how close the center of Dorian comes to the coast, 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: Dorian is expected to produce the following rainfall totals through Friday: Coastal Carolinas...6 to 12 inches, isolated 15 inches. Far southeast Virginia...3 to 6 inches. Atlantic Coast from Daytona Beach, Florida to the Georgia-South Carolina border...2 to 4 inches, isolated 6 inches. This rainfall may cause life-threatening flash floods. SURF: Large swells will affect the northwestern Bahamas, and the entire southeastern United States coast from Florida through North Carolina during the next several days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. TORNADOES: A tornado or two are possible along the immediate coast of Georgia this afternoon. Isolated tornadoes are possible from this evening through Thursday across the coastal Carolinas. NEXT ADVISORY ------------- Next intermediate advisory at 800 PM EDT. Next complete advisory at 1100 PM EDT. $$ Forecaster Beven
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