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Tropical Storm Florence Public Advisory Number 62A

2018-09-15 01:39:30| National Hurricane Center (Atlantic)

Issued at 800 PM EDT Fri Sep 14 2018 140 WTNT31 KNHC 142339 TCPAT1 BULLETIN Tropical Storm Florence Intermediate Advisory Number 62A NWS National Hurricane Center Miami FL AL062018 800 PM EDT Fri Sep 14 2018 ...FLORENCE'S CENTER MOVES INTO EXTREME EASTERN SOUTH CAROLINA... ...LIFE-THREATENING STORM SURGES AND STRONG WINDS TO CONTINUE TONIGHT... ...CATASTROPHIC FRESHWATER FLOODING EXPECTED OVER PORTIONS OF NORTH AND SOUTH CAROLINA... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...33.9N 78.8W ABOUT 15 MI...25 KM NNE OF MYRTLE BEACH SOUTH CAROLINA ABOUT 55 MI...90 KM ESE OF FLORENCE SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...975 MB...28.79 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Myrtle Beach South Carolina to Salvo North Carolina * Pamlico Sound, including the Neuse and Pamlico Rivers A Tropical Storm Warning is in effect for... * Edisto Beach South Carolina to Cape Hatteras North Carolina * Pamlico Sound Interests elsewhere in the southeastern and mid-Atlantic states should monitor the progress of Florence. 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 800 PM EDT (0000 UTC), the center of Tropical Storm Florence was located by NOAA Doppler radar near latitude 33.9 North, longitude 78.8 West. Florence is moving toward the west near 3 mph (6 km/h). A slow westward to west-southwestward motion is expected through Saturday. On the forecast track, the center of Florence will move farther inland across extreme eastern South Carolina tonight and Saturday. Florence will then move generally northward across the western Carolinas and the central Appalachian Mountains early next week. Maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Gradual weakening is expected tonight. Significant weakening is forecast over the weekend and into early next week while Florence moves farther inland. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. Within the past hour or two, a sustained wind of 55 mph (89 km/h) and a gust to 68 mph (109 km/h) were reported at the National Ocean Service station at Johnny Mercer Pier in Wrightsville Beach, North Carolina. The estimated minimum central pressure based on nearby surface observations is 975 mb (28.79 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... The Neuse, Pamlico, Pungo, and Bay Rivers...8-12 ft Cape Fear NC to Salvo NC...3-5 ft Myrtle Beach SC to Cape Fear NC...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...an additional 20 to 25 inches, with isolated storm totals of 30 to 40 inches. This rainfall will produce catastrophic flash flooding and prolonged significant river flooding. Remainder of South Carolina and North Carolina into southwest Virginia...5 to 10 inches, isolated 15 inches. This rainfall will produce life-threatening flash flooding. Rainfall totals exceeding 16 inches thus far have been reported at several locations across southeastern North Carolina. WIND: Tropical storm conditions will continue through Saturday morning in portions of the warning area along the coast and also over large portions of eastern North Carolina and extreme eastern South Carolina, with tropical storm force wind gusts spreading well inland. TORNADOES: A few tornadoes are possible in eastern North Carolina through tonight, mainly near southeast coastal areas after dark. 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 1100 PM EDT. $$ Forecaster Berg

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