000 WTNT34 KWNH 092037 TCPAT4 BULLETIN Post-Tropical Cyclone Debby Advisory Number 30 NWS Weather Prediction Center College Park MD AL042024 500 PM EDT Fri Aug 09 2024 ...HEAVY RAINFALL AND A SIGNIFICANT FLOOD THREAT LINGERING ACROSS PORTIONS OF THE NORTHEAST... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...44.0N 74.9W ABOUT 135 MI...220 KM NNE OF BINGHAMTON NEW YORK ABOUT 90 MI...145 KM WSW OF BURLINGTON VERMONT MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 38 MPH...61 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 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 * Maryland * Eastern West Virginia * Pennsylvania * New York * New Jersey A Flood Watch is in effect for portions of... * Delaware * Northern Vermont * Northern New Hampshire A Tornado Watch is in effect for portions of... * Eastern Pennsylvania * Upstate New York Coastal Flood Advisories and Warnings are in effect for portions of... * Coastal Mid-Atlantic A Gale Warning is in effect for the coastal waters of... * Mid-Atlantic * Southern New England Wind Advisories are in effect for portions of... * Delaware * Eastern Pennsylvania * New Jersey * New York * Connecticut * Eastern Massachusetts * Vermont DISCUSSION AND OUTLOOK ---------------------- At 500 PM EDT (2100 UTC), the center of Post-Tropical Cyclone Debby was located near latitude 44.0 North, longitude 74.9 West. The post-tropical cyclone is moving toward the northeast near 38 mph (61 km/h) and this motion is expected to continue. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Little change in strength is forecast during the next 48 hours. The estimated minimum central pressure is 999 mb (29.50 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 1 to 3 inches of rainfall with locally higher amounts, across coastal portions of North Carolina today, with locally considerable flooding expected. Across eastern Pennsylvania into Upstate New York, an additional 1 to 3 inches of rainfall with locally higher amounts are expected through Friday night. This will likely result in areas of considerable flash and urban flooding, as well as river flooding. For portions of Northern New England, 1 to 3 inches of rain with locally higher amounts are expected through Friday night. This will result in isolated to scattered instances of flash flooding. 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 tornado or two may occur through this evening across portions of New Jersey, New York, and western New England. WIND: Wind gusts of 30-50 MPH will be possible into tonight across portions of Delaware, eastern Pennsylvania, New Jersey, New York, and western New England. Given saturated ground conditions these winds may bring down trees and result in isolated to scattered power outages. SURF: Large swells will continue to affect the Southeast, Mid-Atlantic and Southern New England coast. 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 1100 PM EDT. $$ Forecaster Pereira/Taylor
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