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| #1192536 (Received by flhurricane at: 10:39 PM 06.Aug.2024) TCPAT4 BULLETIN Tropical Storm Debby Advisory Number 19 NWS National Hurricane Center Miami FL AL042024 1100 PM EDT Tue Aug 06 2024 ...DEBBY MOVING SLOWLY EASTWARD OFFSHORE OF THE COASTS OF GEORGIA AND SOUTH CAROLINA... ...MAJOR FLOOD THREAT FOR PORTIONS OF THE SOUTHEASTERN UNITED STATES THIS WEEK... SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...31.8N 80.2W ABOUT 50 MI...80 KM ESE OF SAVANNAH GEORGIA ABOUT 70 MI...115 KM SSW OF CHARLESTON SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...E OR 90 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued for the coast of Georgia from the mouth of the Savannah River southward. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Watch is in effect for... * North of South Santee River, South Carolina to Cape Fear, North Carolina A Tropical Storm Warning is in effect for... * North of the mouth of thee Savannah River 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 Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. 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, generally within 48 hours. Interests elsewhere along the southeastern coast of the United States should monitor the progress of this system. Additional watches or warnings may be required on Wednesday. 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 31.8 North, longitude 80.2 West. Debby is moving toward the east near 5 mph (7 km/h). A slow motion toward the east and then north is expected through Thursday night. On the forecast track, the center of Debby is expected to slowly move away from the coast of Georgia and South Carolina tonight, continue to drift offshore through early Thursday, and then move inland over South Carolina on Thursday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Some strengthening is forecast while the center of Debby remains offshore. Weakening is expected Thursday night and Friday after landfall. Tropical-storm-force winds extend outward up to 205 miles (335 km) from the center. The estimated minimum central pressure based on surface observations is 996 mb (29.42 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 night. Tropical storm conditions are expected within the tropical storm warning area in North Carolina beginning early Wednesday. Tropical Storm conditions are possible within the Tropical Storm Watch area in North Carolina beginning Wednesday. 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, SC to Cape Fear, NC...2-4 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 potentially historic storm total rainfall of 10 to 20 inches, with maximum amounts of 25 inches, bringing areas of catastrophic flooding across portions of eastern South Carolina and southeast North Carolina through Friday. From central South Carolina to the Upstate of South Carolina, northward into Southwest Virginia, portions of the Mid-Atlantic States, western and northern New York State into Northern New England, 3 to 6 inches with local amounts to 8 inches, are expected through Saturday. This rainfall will likely result in areas of considerable flash and urban flooding, with river flooding possible. An additional scattered 1 to 3 inches of rainfall is possible across southeast Georgia through tonight, which may aggravate any ongoing flooding conditions across that vicinity. 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 are possible over portions of coastal South Carolina and North Carolina through Wednesday morning. 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 |
