723 WTNT34 KWNH 090242 TCPAT4 BULLETIN Tropical Depression Debby Advisory Number 27 NWS Weather Prediction Center College Park MD AL042024 1100 PM EDT Thu Aug 08 2024 ...MAJOR FLOOD THREAT CONTINUES FOR PORTIONS OF WESTERN VIRGINIA... SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...36.2N 80.2W ABOUT 80 MI...135 KM NNE OF CHARLOTTE NORTH CAROLINA ABOUT 90 MI...140 KM WNW OF RALEIGH NORTH CAROLINA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 26 MPH...43 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- SUMMARY OF WATCHES AND WARNINGS IN EFFECT: Flood Watches and Warnings are in effect for portions of.... * South Carolina * North Carolina * Virginia * Eastern West Virginia * Maryland * Pennsylvania A Flood Watch is in effect for portions of... * Upstate New York * Northern Vermont * Northern New Hampshire A Tornado Watch is in effect for portions of... * Eastern North Carolina * Northern and Eastern Virginia * Maryland * District of Columbia * Eastern West Virginia Coastal Flood Advisories are in effect for portions of... * Eastern North Carolina * Areas surrounding the Chesapeake Bay and Potomac River * Central New Jersey Coast A Gale Watch is in effect the coastal waters of... * Rhode Island * Southeastern Massachusetts up through Cape Cod Wind Advisories are in effect for portions of... * Western Virginia * Eastern Maryland * Delaware * Eastern Pennsylvania * New Jersey * Southern New York * Southern Connecticut DISCUSSION AND OUTLOOK ---------------------- At 1100 PM EDT (0300 UTC), the center of Tropical Depression Debby was located near latitude 36.2 North, longitude 80.2 West. The depression is moving toward the north-northeast near 26 mph (43 km/h) and this motion is expected to slowly increase and shift to the northeast over the next day. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Little change in strength is forecast during the next 48 hours. The estimated minimum central pressure is 1001 mb (29.56 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. RAINFALL: Debby is expected to produce an additional 3 to 6 inches of rainfall with locally higher amounts, across portions of southeastern North Carolina leading to maximum storm total amounts as high as 15 inches. Additional rainfall of 1 to 3 inches over portions of eastern South Carolina will bring maximum storm total amounts as high as 20 to 25 inches. Considerable flooding is expected across portions of eastern South Carolina and southeast North Carolina through Friday. From central North 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 to locally catastrophic flash and urban flooding, especially in the terrain of western Virginia, with river flooding also possible. From portions of Maryland north through Upstate New York and Vermont, 2 to 4 inches, with local amounts to 6 inches, are expected through Friday night. This will likely result in areas of considerable flash and urban flooding as well as river flooding. For the remainder of northern New England, 1 to 3 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 tonight from eastern North Carolina into Virginia and Maryland. The threat for tornadoes will shift northward into parts of New Jersey, eastern Pennsylvania and southeast New York on Friday. SURF: Large swells will continue to affect the Southeast and the Mid Atlantic coast for another day or so. 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 Pereira/Gallina/Chenard
Tropical Depression Debby Public Advisory
08
Aug