|
Show Selection: |
| #1192751 (Received by flhurricane at: 1:45 AM 08.Aug.2024) TCPAT4 BULLETIN Tropical Storm Debby Intermediate Advisory Number 23A NWS National Hurricane Center Miami FL AL042024 200 AM EDT Thu Aug 08 2024 ...DEBBY MAKES LANDFALL NEAR BULLS BAY SOUTH CAROLINA... ...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF THE CAROLINAS AND WESTERN VIRGINIA... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...33.0N 79.6W ABOUT 20 MI...35 KM NE OF CHARLESTON SOUTH CAROLINA ABOUT 65 MI...100 KM SW OF MYRTLE BEACH SOUTH CAROLINA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. 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. 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 ---------------------- Surface observations, satellite images, and radar data indicate that Debby has made landfall near Bulls Bay, South Carolina. At 200 AM EDT (0600 UTC), the center of Tropical Storm Debby was located on the coast near latitude 33.0 North, longitude 79.6 West. Debby is moving toward the northwest near 5 mph (7 km/h). This general motion is expected to continue through this morning. A faster motion toward the north and north-northeast across the Carolinas and the U.S. Mid-Atlantic states is expected later today and on Friday. Air Force Reserve Hurricane Hunter aircraft data indicate that maximum sustained winds have decreased to near 50 mph (85 km/h) with higher gusts. Additional weakening is forecast today as the center moves farther 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. The estimated minimum central pressure based on surface observations is 995 mb (29.38 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 today. Tropical storm conditions are expected within the tropical storm warning area and possible within the tropical storm watch area in North Carolina through today. 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 today, 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 early this morning. 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 complete advisory at 500 AM EDT. $$ Forecaster Berg |
