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Chill falls over the Atlantic as the official season heads towards close
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| #1064317 (Received by flhurricane at: 4:59 AM 03.Oct.2021) TCPAT3 BULLETIN Hurricane Sam Advisory Number 43 NWS National Hurricane Center Miami FL AL182021 500 AM AST Sun Oct 03 2021 ...SAM CONTINUES TO WEAKEN AS IT MOVES NORTHEASTWARD OVER THE OPEN NORTH ATLANTIC... ...EXPECTED TO BECOME A LARGE AND POWERFUL POST-TROPICAL LOW PRESSURE SYSTEM ON MONDAY... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...37.3N 55.9W ABOUT 665 MI...1070 KM SSW OF CAPE RACE NEWFOUNDLAND MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...960 MB...28.35 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 AM AST (0900 UTC), the center of Hurricane Sam was located near latitude 37.3 North, longitude 55.9 West. Sam is moving toward the northeast near 17 mph (28 km/h). This general motion with an increase in forward speed is expected during the next few days. On the forecast track, Sam will move over the far North Atlantic well to southeast and east of Newfoundland. Maximum sustained winds decreased to near 105 mph (165 km/h) with higher gusts. Further weakening is forecast during the next few days, and Sam is expected transition into a powerful post-tropical cyclone on Monday. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 240 miles (390 km). The estimated minimum central pressure is 960 mb (28.35 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. SURF: Swells generated by Sam will impact the northern Leeward Islands, the Greater Antilles, the Bahamas, the eastern United States and Atlantic Canada for the next couple of days. 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 1100 AM AST. $$ Forecaster Stewart |
