468 WTNT33 KNHC 011743 TCPAT3 BULLETIN Hurricane Sam Intermediate Advisory Number 36A NWS National Hurricane Center Miami FL AL182021 200 PM AST Fri Oct 01 2021 ...AIR FORCE HURRICANE HUNTERS INDICATE THAT SAM IS MAINTAINING CATEGORY 4 STRENGTH... ...CORE OF THE HURRICANE EXPECTED TO PASS WELL EAST OF BERMUDA TONIGHT... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...29.1N 61.9W ABOUT 280 MI...450 KM SE OF BERMUDA MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...N OR 355 DEGREES AT 21 MPH...33 KM/H MINIMUM CENTRAL PRESSURE...937 MB...27.67 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Bermuda A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the eye of Hurricane Sam was located near latitude 29.1 North, longitude 61.9 West. Sam is moving toward the north near 21 mph (33 km/h). A turn toward the north-northeast, at a slightly slower forward speed, is expected by tonight, followed by a northeastward motion Saturday night through Monday. On the forecast track, the center of Sam will pass well to the east of Bermuda tonight. Data from the Air Force Hurricane Hunters indicate that maximum sustained winds remain near 150 mph (240 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Although fluctuations in intensity are still possible today, weakening is forecast during the next couple of days. However, Sam is expected to remain a major hurricane through at least Saturday night. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). The minimum central pressure based on data from the Air Force Hurricane Hunters is 937 mb (27.67 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Sam can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC, and on the web at hurricanes.gov/graphics_at3.shtml?key_messages. WIND: Tropical storm conditions are possible on Bermuda beginning tonight or early Saturday. SURF: Swells generated by Sam will impact the northern Leeward Islands and the Greater Antilles, including Puerto Rico, during the next couple of days. Swells are expected to reach Bermuda and the Bahamas this afternoon, and then spread to the United States east coast and Atlantic Canada on Saturday. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Cangialosi/Nepaul