000 WTNT33 KNHC 161152 TCPAT3 BULLETIN Post-Tropical Cyclone Lee Intermediate Advisory Number 44A NWS National Hurricane Center Miami FL AL132023 800 AM AST Sat Sep 16 2023 ...LEE EXPECTED TO MAKE LANDFALL LATER TODAY... ...STRONG WINDS, COASTAL FLOODING, AND HEAVY RAINS ALREADY OCCURRING IN PORTIONS OF NEW ENGLAND AND ATLANTIC CANADA... SUMMARY OF 800 AM AST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...42.7N 66.2W ABOUT 160 MI...355 KM SSE OF EASTPORT MAINE ABOUT 185 MI...365 KM SSW OF HALIFAX NOVA SCOTIA MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...N OR 355 DEGREES AT 25 MPH...41 KM/H MINIMUM CENTRAL PRESSURE...965 MB...28.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * New Brunswick from the U.S./Canada border to Point Lepreau, including Grand Manan Island * Nova Scotia from Digby to Ecum Secum A Tropical Storm Warning is in effect for... * Westport Massachusetts northward to the U.S./Canada border * Martha's Vineyard * Nantucket * New Brunswick from the U.S./Canada border to Fort Lawrence, including Grand Manan Island * New Brunswick from Shediac to Tidnish * Nova Scotia from Fort Lawrence to Point Tupper A Tropical Storm Watch is in effect for... * Prince Edward Island * Magdalen Islands * New Brunswick from Belledune to Shediac * Nova Scotia from Tidnish to Aulds Cove * Nova Scotia from Aulds Cove to Meat Cove to Point Tupper A Hurricane Watch means that hurricane conditions are possible within the watch area, in this case later today. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning, in this case today through Sunday. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case through Sunday. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM AST (1200 UTC), the center of Post-Tropical Cyclone Lee was located near latitude 42.7 North, longitude 66.2 West. Lee is moving toward the north near 25 mph (41 km/h). A northward motion but at a slower forward speed is expected later today, and the center of Lee is forecast to reach western Nova Scotia around midday. Lee is then expected to turn toward the north-northeast and northeast and move across Atlantic Canada tonight and Sunday. Maximum sustained winds remain near 80 mph (130 km/h) with higher gusts. Lee is expected to be at or just below hurricane strength when it reaches Nova Scotia later today. Weakening is forecast tonight and Sunday while Lee moves across Atlantic Canada. Hurricane-force winds extend outward up to 140 miles (220 km) from the center and tropical-storm-force winds extend outward up to 390 miles (630 km). A sustained wind of 47 mph (76 km/h) and a gust to 55 mph (89 km/h) in Nantucket, Massachusetts. A wind gust of 77 mph (124 km/h) was recently reported in Grand Manan Island in New Brunswick, Canada. The minimum central pressure is estimated to be 965 mb (28.50 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Lee can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC and on the web at hurricanes.gov/text/MIATCDAT3.shtml WIND: Hurricane conditions are possible in the Hurricane Watch areas in Atlantic Canada later today. Tropical storm conditions are occurring along the coasts of New England and Nova Scotia and will spread northward within the Tropical Storm Warning areas today and tonight. The strong winds are likely to lead to downed trees and potential power outages. SURF: Swells generated by Lee are affecting the U.S. Virgin Islands, Puerto Rico, Hispaniola, the Turks and Caicos Islands, the Bahamas, Bermuda, the east coast of the United States, and Atlantic Canada. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. RAINFALL: Through tonight, Lee is expected to produce rainfall amounts of 1 to 4 inches (25 to 100 millimeters) over far eastern Massachusetts, eastern Maine, western Nova Scotia, and New Brunswick. This may produce localized urban and small stream flooding. 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... Watch Hill, RI to the U.S./Canada border...1-3 ft Cape Cod...1-3 ft Martha's Vineyard and Nantucket...1-3 ft Boston Harbor...1-3 ft The deepest water will occur along the immediate coast where the surge will be accompanied by large and destructive waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. A dangerous storm surge will produce coastal flooding within the wind warning areas in Atlantic Canada in areas of onshore winds. Near the coast, the surge will be accompanied by large and destructive waves. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Cangialosi