Hurricane Sam Public Advisory Number 39
ActuCyclone
2 octobre 2021
158 WTNT33 KNHC 020842 TCPAT3 BULLETIN Hurricane Sam Advisory Number 39 NWS National Hurricane Center Miami FL AL182021 500 AM AST Sat Oct 02 2021 ...SAM NOW MOVING AWAY FROM BERMUDA... ...TROPICAL STORM WARNING DISCONTINUED FOR THE ISLAND... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...32.8N 60.5W ABOUT 255 MI...405 KM E OF BERMUDA ABOUT 1035 MI...1665 KM SSW OF CAPE RACE NEWFOUNDLAND MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NNE OR 20 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...945 MB...27.91 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Bermuda Weather Service has discontinued the Tropical Storm Warning for Bermuda. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 AM AST (0900 UTC), the eye of Hurricane Sam was located near latitude 32.8 North, longitude 60.5 West. Sam is moving toward the north-northeast near 17 mph (28 km/h), and this motion is expected to continue today. A turn toward the northeast is expected by tonight, with an increase in forward speed forecast through Monday. On the forecast track, Sam will continue to move away from Bermuda. Maximum sustained winds have decreased to near 130 mph (215 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional weakening is forecast during the next few days, but Sam is expected to remain a major hurricane through today or tonight. Sam is likely to become a hurricane-force post-tropical low by Monday night or early Tuesday. Hurricane-force winds extend outward up to 65 miles (100 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). Several automated stations on Bermuda have recently reported wind gusts near 40 mph (65 km/h). The estimated minimum central pressure is 945 mb (27.91 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: A few wind gusts to tropical storm force will still be possible on Bermuda this morning. SURF: Swells generated by Sam will impact the northern Leeward Islands, the Greater Antilles, the Bahamas, and Bermuda during the next couple of days. Swells are expected to reach the United States east coast and Atlantic Canada today. 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 Berg