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| #940411 (Received by flhurricane at: 1:54 PM 15.Sep.2018) TCPAT1 BULLETIN Tropical Storm Florence Intermediate Advisory Number 65A NWS National Hurricane Center Miami FL AL062018 200 PM EDT Sat Sep 15 2018 ...CENTER OF FLORENCE MOVING SLOWLY WESTWARD ACROSS EASTERN SOUTH CAROLINA... ...HEAVY RAINS AND CATASTROPHIC FLOODING CONTINUE ACROSS PORTIONS OF NORTH CAROLINA AND SOUTH CAROLINA... SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...33.6N 79.8W ABOUT 40 MI...65 KM S OF FLORENCE SOUTH CAROLINA ABOUT 50 MI...85 KM W OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 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 Ocracoke Inlet North Carolina * Pamlico Sound, including the Neuse and Pamlico Rivers A Tropical Storm Warning is in effect for... * South Santee River South Carolina to Cape Lookout 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 200 PM EDT (1800 UTC), the center of Tropical Storm Florence was located near latitude 33.6 North, longitude 79.8 West. Florence is moving slowly toward the west near 3 mph (6 km/h) and a slow westward motion is expected to continue through today. A turn toward the west-northwest and northwest is expected on Sunday. Florence is forecast to turn northward through the Ohio Valley by Monday. Radar data and surface observations indicate that maximum sustained winds are near 45 mph (75 km/h) with higher gusts, mainly to the east of the center in heavy rainbands over water. Gradual weakening is forecast while Florence moves farther inland during the next couple of days, and it is expected to weaken to a tropical depression by tonight. Tropical-storm-force winds extend outward up to 150 miles (240 km) from the center. A sustained wind of 40 mph (65 km/h) with a gust to 49 mph (79 km/h) was recently reported at the Johnny Mercer Pier in Wrightsville Beach, North Carolina. The estimated minimum central pressure based on nearby surface observations is 997 mb (29.44 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...3-5 ft Cape Lookout NC to Cape Fear NC...3-5 ft Ocracoke Inlet NC to Cape Lookout NC...2-4 ft Cape Fear NC to Myrtle Beach 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... Southern and central portions of North Carolina into far northeast South Carolina...an additional 15 to 20 inches, with storm totals between 30 and 40 inches along the North Carolina coastal areas south of Cape Hatteras. This rainfall will continue to produce catastrophic flash flooding and prolonged significant river flooding. Remainder of northern South Carolina into western North Carolina and southwest Virginia...5 to 10 inches, isolated 15 inches. West-central Virginia into far eastern West Virginia, north of Roanoke and west of Charlottesville, 3 to 6 inches, isolated 8 inches. These rainfall amounts will result in life-threatening flash flooding and river flooding, along with an elevated risk for landslides. A preliminary report from a cooperative observer near Swansboro, North Carolina, indicates that more than 30 inches of rain has fallen so far. That rainfall total breaks the tropical cyclone rainfall record of 24.06 inches for North Carolina set during Hurricane Floyd in 1999. WIND: Tropical storm conditions will continue today 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 southeastern North Carolina northeastern South Carolina today through tonight. 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 PM EDT. $$ Forecaster Stewart |
