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Hurricane Sam Public Advisory Number 19
2021-09-27 10:45:35| National Hurricane Center (Atlantic)
Issued at 500 AM AST Mon Sep 27 2021 000 WTNT33 KNHC 270845 TCPAT3 BULLETIN Hurricane Sam Advisory Number 19 NWS National Hurricane Center Miami FL AL182021 500 AM AST Mon Sep 27 2021 ...SAM EXPECTED TO REMAIN A MAJOR HURRICANE FOR SEVERAL DAYS... ...HURRICANE HUNTER AIRCRAFT TO INVESTIGATE SAM LATER TODAY... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...15.2N 51.4W ABOUT 800 MI...1290 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...952 MB...28.12 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 15.2 North, longitude 51.4 West. Sam is moving toward the northwest near 8 mph (13 km/h). This general motion is expected to continue for the next several days, with an increase in forward speed beginning on Thursday. Maximum sustained winds are near 130 mph (215 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Little change in strength is expected during the next day or so. Thereafter, some slow weakening is forecast through midweek, although Sam should remain a major hurricane. Sam is a small hurricane. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km). The estimated minimum central pressure is 952 mb (28.12 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam will reach the Lesser Antilles today and impact these islands for the next several 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 Reinhart
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Hurricane Sam Public Advisory Number 18
2021-09-27 04:49:03| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Sun Sep 26 2021 000 WTNT33 KNHC 270248 TCPAT3 BULLETIN Hurricane Sam Advisory Number 18 NWS National Hurricane Center Miami FL AL182021 1100 PM AST Sun Sep 26 2021 ...HURRICANE HUNTER AIRCRAFT FINDS SAM HAS PEAKED IN INTENSITY... ...EXPECTED TO REMAIN A MAJOR HURRICANE FOR SEVERAL DAYS... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.7N 50.8W ABOUT 850 MI...1365 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Hurricane Sam was located by a NOAA Hurricane Hunter aircraft near latitude 14.7 North, longitude 50.8 West. Sam is moving toward the northwest near 7 mph (11 km/h), and this motion is expected to continue for the next few days, along with a gradual increase in forward speed beginning around midweek. Data from the reconnaissance aircraft indicate that maximum sustained winds are near 145 mph (230 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are expected during the next day or so. Thereafter, slow weakening is forecast. However, Sam is still expected to remain a major hurricane through midweek. Sam remains a small tropical cyclone. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure based on recent reports from the aircraft is 943 mb (27.85 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early this week. 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 AM AST. $$ Forecaster Stewart
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Hurricane Sam Public Advisory Number 17
2021-09-26 23:34:58| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sun Sep 26 2021 000 WTNT33 KNHC 262134 TCPAT3 BULLETIN Hurricane Sam Advisory Number 17 NWS National Hurricane Center Miami FL AL182021 500 PM AST Sun Sep 26 2021 ...SMALL BUT FEROCIOUS SAM STRENGTHENS SOME MORE... ...EXPECTED TO REMAIN A MAJOR HURRICANE FOR SEVERAL DAYS... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.2N 50.5W ABOUT 880 MI...1415 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Hurricane Sam was located near latitude 14.2 North, longitude 50.5 West. Sam is moving toward the northwest near 7 mph (11 km/h) and this motion is expected to continue for the next few days, along with a gradual increase in forward speed commencing by midweek. Maximum sustained winds have increased to near 150 mph (240 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are expected during the next couple of days. Thereafter, some slow weakening is forecast. Sam is a small tropical cyclone. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 938 mb (27.70 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early this week. 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 PM AST. $$ Forecaster Latto
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Hurricane Sam Public Advisory Number 17
2021-09-26 22:34:55| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sun Sep 26 2021 000 WTNT33 KNHC 262034 TCPAT3 BULLETIN Hurricane Sam Advisory Number 17 NWS National Hurricane Center Miami FL AL182021 500 PM AST Sun Sep 26 2021 ...SMALL BUT FEROCIOUS SAM STRENGTHENS SOME MORE... ...EXPECTED TO REMAIN A MAJOR HURRICANE FOR SEVERAL DAYS SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.2N 50.5W ABOUT 880 MI...1415 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Hurricane Sam was located near latitude 14.2 North, longitude 50.5 West. Sam is moving toward the northwest near 7 mph (11 km/h) and this motion is expected to continue for the next few days, along with a gradual increase in forward speed commencing by midweek. Maximum sustained winds have increased to near 150 mph (240 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are expected during the next couple of days. Thereafter, some slow weakening is forecast. Sam is a small tropical cyclone. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 938 mb (27.70 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early this week. 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 PM AST. $$ Forecaster Latto
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Hurricane Sam Public Advisory Number 16
2021-09-26 16:42:55| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Sun Sep 26 2021 000 WTNT33 KNHC 261442 TCPAT3 BULLETIN Hurricane Sam Advisory Number 16 NWS National Hurricane Center Miami FL AL182021 1100 AM AST Sun Sep 26 2021 ...SAM CONTINUES MOVING SLOWLY WEST-NORTHWESTWARD AS A CATEGORY 4 HURRICANE... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...13.9N 50.2W ABOUT 905 MI...1455 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Hurricane Sam was located near latitude 13.9 North, longitude 50.2 West. Sam is moving toward the west-northwest near 8 mph. This general motion is expected to continue today, followed by a turn toward the northwest on Monday. Then, a northwestward motion is forecast to continue through midweek. Maximum sustained winds are near 145 mph (230 km/h) with higher gusts. Sam is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are expected during the next day or so. Thereafter, some slow weakening is forecast. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 943 mb (27.85 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early this week. 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 Hagen/Pasch
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