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Hurricane Florence Public Advisory Number 59A
2018-09-14 07:38:55| National Hurricane Center (Atlantic)
Issued at 200 AM EDT Fri Sep 14 2018 354 WTNT31 KNHC 140538 TCPAT1 BULLETIN Hurricane Florence Intermediate Advisory Number 59A NWS National Hurricane Center Miami FL AL062018 200 AM EDT Fri Sep 14 2018 ...LIFE-THREATENING STORM SURGE AND HURRICANE-FORCE WINDS OCCURRING ALONG THE NORTH CAROLINA COAST... ...CATASTROPHIC FRESHWATER FLOODING EXPECTED OVER PORTIONS OF NORTH AND SOUTH CAROLINA... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...34.1N 77.2W ABOUT 35 MI...55 KM E OF WILMINGTON NORTH CAROLINA ABOUT 50 MI...80 KM SW OF MOREHEAD CITY NORTH CAROLINA MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...954 MB...28.17 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * South Santee River South Carolina to Duck North Carolina * Albemarle and Pamlico Sounds, including the Neuse and Pamlico Rivers A Storm Surge Watch is in effect for... * Edisto Beach South Carolina to South Santee River South Carolina A Hurricane Warning is in effect for... * South Santee River South Carolina to Duck North Carolina * Albemarle and Pamlico Sounds A Hurricane Watch is in effect for... * Edisto Beach South Carolina to South Santee River South Carolina A Tropical Storm Warning is in effect for... * North of Duck North Carolina to Cape Charles Light Virginia * Chesapeake Bay south of New Point Comfort * Edisto Beach South Carolina to South Santee River South Carolina Interests elsewhere in the southeastern and mid-Atlantic states should monitor the progress of Florence. A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within the next 24 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. 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 200 AM EDT (0600 UTC), the center of the eye of Hurricane Florence was located by NOAA Doppler radar near latitude 34.1 North, longitude 77.2 West. Florence is moving toward the west- northwest near 6 mph (9 km/h). A turn toward the west at a slow forward speed is expected today, followed by a slow west-southwestward motion tonight and Saturday. On the forecast track, the center of Florence is expected to move inland across extreme southeastern North Carolina and extreme eastern South Carolina Friday and Saturday. Florence will then move generally northward across the western Carolinas and the central Appalachian Mountains early next week. Data from NOAA Doppler radar indicate the the maximum sustained winds remain near 90 mph (150 km/h) with higher gusts. Little change in strength is expected before Florence moves inland today. Significant weakening is expected over the weekend and into early next week while Florence moves farther inland. Hurricane-force winds extend outward up to 80 miles (130 km) from the center, and tropical-storm-force winds extend outward up to 195 miles (315 km). A Weatherflow station at Fort Macon, North Carolina recently reported a sustained wind of 71 mph (114 km/h) with a gust to 92 mph (148 km/h). A NOAA observing site at Cape Lookout, North Carolina, recently reported a sustained wind of 70 mph (113 km/h) with a gust to 85 mph (137 km/h). A USGS gauge at New Bern, North Carolina, on the Neuse River is currently recording 10.1 feet of inundation. Another USGS gauge in Emerald Isle, North Carolina, recently recorded 5.5 feet of inundation. The estimated minimum central pressure is 954 mb (28.17 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 has the potential to reach the following heights above ground... Cape Fear NC to Cape Lookout NC...7-11 ft, with locally higher amounts in the Neuse, Pamlico, Pungo, and Bay Rivers Cape Lookout NC to Ocracoke Inlet NC...6-9 ft South Santee River SC to Cape Fear NC...4-6 ft Ocracoke Inlet NC to Salvo NC...4-6 ft Salvo NC to Duck NC...2-4 ft Edisto Beach SC to South Santee River SC...2-4 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and destructive waves. Surge-related flooding 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: Florence is expected to produce heavy and excessive rainfall in the following areas... Southeastern coastal North Carolina into far northeastern South Carolina...20 to 30 inches, isolated 40 inches. This rainfall will produce catastrophic flash flooding and prolonged significant river flooding. Remainder of South Carolina and North Carolina into southwest Virginia...6 to 12 inches, isolated 15 inches. This rainfall will produce life-threatening flash flooding. WIND: Hurricane conditions are occuring over portions of the coast of North Carolina and are expected to spread across portions of southeastern North Carolina and eastern South Carolina through today. Tropical storm conditions are expected to spread inland across the remainder of the warning area through Saturday. TORNADOES: A few tornadoes are possible in eastern and southeastern North Carolina through today. SURF: Swells generated by Florence are affecting Bermuda, portions of the U.S. East Coast, and the northwestern and central Bahamas. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 AM EDT. $$ Forecaster Pasch
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