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| #1192729 (Received by flhurricane at: 10:36 PM 07.Aug.2024) TCPAT4 BULLETIN Tropical Storm Debby Advisory Number 23 NWS National Hurricane Center Miami FL AL042024 1100 PM EDT Wed Aug 07 2024 ...CENTER OF DEBBY ABOUT TO CROSS THE COAST OF SOUTH CAROLINA... ...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS... SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...32.9N 79.5W ABOUT 25 MI...40 KM ENE OF CHARLESTON SOUTH CAROLINA ABOUT 65 MI...105 KM SSW OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 3 MPH...6 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued south of Edisto Beach, South Carolina. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Edisto Beach, South Carolina to Surf City, North Carolina A Tropical Storm Watch is in effect for... * North of Surf City, North Carolina to Beaufort Inlet, North Carolina A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere along the southeastern coast of the United States 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 OUTLOOK ---------------------- At 1100 PM EDT (0300 UTC), the center of Tropical Storm Debby was located near latitude 32.9 North, longitude 79.5 West. Debby is moving toward the north-northwest near 3 mph (6 km/h). This general motion is expected to continue through Thursday, bringing the center across the South Carolina coast during the next several hours. A faster motion toward the north and north-northeast across the Carolinas and the U.S. Mid-Atlantic states is expected later on Thursday and on Friday. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Weakening is forecast to begin on Thursday after the center moves inland. Debby is expected to merge with a frontal boundary over the U.S. Mid-Atlantic states on Friday or Friday night. Tropical-storm-force winds extend outward up to 185 miles (295 km) mainly to the east of the center. NOAA buoy 41013 near Frying Pan Shoals, North Carolina, recently reported sustained winds of 38 mph (61 km/h) and a wind gust of 45 mph (72 km/h). The estimated minimum central pressure based on surface observations and Air Force Reserve Hurricane Hunter aircraft data is 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Debby can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC. WIND: Tropical storm conditions are expected to continue along the coast of South Carolina within the tropical storm warning area through Thursday. Tropical storm conditions are expected within the tropical storm warning area and possible within the tropical storm watch area in North Carolina tonight through Thursday. STORM SURGE: The combination of storm surge and 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... South Santee River to Ocracoke Inlet including the Neuse and Pamlico Rivers...1 to 3 ft For a complete depiction of areas at risk of storm surge inundation, please see the National Weather Service Peak Storm Surge Graphic, available at hurricanes.gov/graphics_at4.shtml?peakSurge. RAINFALL: Debby is expected to produce an additional 3 to 9 inches of rainfall with locally higher amounts, leading to maximum storm total amounts as high as 25 inches in eastern South Carolina and 15 inches in southeast North Carolina with considerable flooding expected across portions of eastern South Carolina and southeast North Carolina through Friday. An additional 1 to 2 inches of rainfall with locally higher amounts is possible across southeast Georgia through Thursday, bringing overall storm total amounts as high as 15 inches, which may aggravate any ongoing flooding conditions. From the piedmont of South Carolina northward across portions of Virginia, 3 to 7 inches with local amounts to 10 inches, are expected through Friday. This rainfall will likely result in areas of considerable flash and urban flooding, with river flooding possible. From Maryland north through Upstate New York and Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected through Saturday morning. This will likely produce considerable flash and urban flooding as well as river flooding. For Long Island and the remainder of New England, 1 to 2 inches, with local amounts to 4 inches, are expected into Saturday. Scattered instances of flash flooding are possible. For a complete depiction of forecast rainfall and flash flooding associated with Debby, please see the National Weather Service Storm Total Rainfall Graphic, available at hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk graphic at hurricanes.gov/graphics_at4.shtml?ero. For a list of rainfall observations (and wind reports) associated this storm, see the companion storm summary at WBCSCCNS4 with the WMO header ACUS44 KWBC or at the following link: www.wpc.ncep.noaa.gov/discussions/nfdscc4.html. TORNADOES: A few tornadoes may occur over parts of eastern North Carolina overnight. The risk of tornadoes will shift northward on Thursday into central North Carolina and central Virginia. SURF: Large swells will continue to affect the Southeast U.S. coast through the end of the week. These conditions are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 200 AM EDT. Next complete advisory at 500 AM EDT. $$ Forecaster Beven |
