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Hurricane Sam Public Advisory Number 15
2021-09-26 10:47:14| National Hurricane Center (Atlantic)
Issued at 500 AM AST Sun Sep 26 2021 000 WTNT33 KNHC 260847 TCPAT3 BULLETIN Hurricane Sam Advisory Number 15 NWS National Hurricane Center Miami FL AL182021 500 AM AST Sun Sep 26 2021 ...SAM REMAINS A CATEGORY FOUR HURRICANE... ...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...13.8N 49.7W ABOUT 940 MI...1510 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...WNW OR 295 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 500 AM AST (0900 UTC), the center of Hurricane Sam was located near latitude 13.8 North, longitude 49.7 West. Sam is moving toward the west-northwest near 8 mph (13 km/h). 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. 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 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 1100 AM AST. $$ Forecaster Reinhart
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Hurricane Sam Public Advisory Number 14
2021-09-26 04:49:09| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Sat Sep 25 2021 000 WTNT33 KNHC 260249 TCPAT3 BULLETIN Hurricane Sam Advisory Number 14 NWS National Hurricane Center Miami FL AL182021 1100 PM AST Sat Sep 25 2021 ...NOAA HURRICANE HUNTER AIRCRAFT FINDS THAT SAM HAS CONTINUED TO RAPIDLY INTENSIFY... ...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...13.5N 49.0W ABOUT 990 MI...1595 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...WNW OR 295 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 PM AST (0300 UTC), the center of Hurricane Sam was located near latitude 13.5 North, longitude 49.0 West. Sam is moving toward the west-northwest near 8 mph (13 km/h), and this general motion is forecast to continue through Sunday. A turn toward the northwest is expected on Monday. 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. Fluctuations in intensity are likely into early next week. Sam remains 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 based on data from the NOAA reconnaissance aircraft is 943 mb (27.85 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early next 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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Post-Tropical Cyclone Teresa Public Advisory Number 5
2021-09-25 22:41:59| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sat Sep 25 2021 000 WTNT34 KNHC 252041 TCPAT4 BULLETIN Post-Tropical Cyclone Teresa Advisory Number 5 NWS National Hurricane Center Miami FL AL192021 500 PM AST Sat Sep 25 2021 ...TERESA DEGENERATES INTO A REMNANT LOW... ...THIS IS THE FINAL ADVISORY... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...34.4N 64.3W ABOUT 150 MI...240 KM N OF BERMUDA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...E OR 90 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 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 Post-Tropical Cyclone Teresa was located near latitude 34.4 North, longitude 64.3 West. The post-tropical cyclone is moving toward the east near 5 mph (7 km/h). A turn to the northeast is expected this evening. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The remnant low is expected to dissipate Sunday morning. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on Teresa. Additional information on this system can be found in high seas forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1 and WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php $$ Forecaster Hagen/Latto
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Hurricane Sam Public Advisory Number 13
2021-09-25 22:39:06| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sat Sep 25 2021 000 WTNT33 KNHC 252038 TCPAT3 BULLETIN Hurricane Sam Advisory Number 13 NWS National Hurricane Center Miami FL AL182021 500 PM AST Sat Sep 25 2021 ...SAM RAPIDLY INTENSIFIES TO A CATEGORY FOUR HURRICANE... ...SOME ADDITIONAL STRENGTHENING EXPECTED THROUGH TONIGHT... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...13.3N 48.5W ABOUT 1025 MI...1655 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 10 MPH...17 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 500 PM AST (2100 UTC), the center of Hurricane Sam was located near latitude 13.3 North, longitude 48.5 West. Sam is moving toward the west-northwest near 10 mph (17 km/h). A slower motion to the west-northwest is expected over the weekend, followed by a turn to the northwest on Monday. Maximum sustained winds have increased to near near 140 mph (220 km/h) with higher gusts. Sam is now a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is expected through tonight. Some fluctuations in the hurricane's intensity are then possible early next week. Sam remains 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 943 mb (27.85 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Sam are forecast to reach the Lesser Antilles early next 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 Beven
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Subtropical Depression Teresa Public Advisory Number 4
2021-09-25 16:44:28| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Sat Sep 25 2021 547 WTNT34 KNHC 251444 TCPAT4 BULLETIN Subtropical Depression Teresa Advisory Number 4 NWS National Hurricane Center Miami FL AL192021 1100 AM AST Sat Sep 25 2021 ...TERESA WEAKENS TO A SUBTROPICAL DEPRESSION... ...EXPECTED TO BECOME A REMNANT LOW BY TONIGHT... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...34.3N 65.0W ABOUT 140 MI...225 KM N OF BERMUDA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...STATIONARY MINIMUM CENTRAL PRESSURE...1009 MB...29.80 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 Subtropical Depression Teresa was located near latitude 34.3 North, longitude 65.0 West. Teresa is nearly stationary. A motion toward the northeast is expected to begin this afternoon and continue through Sunday morning. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Teresa is expected to become a remnant low by this evening and dissipate on Sunday. The estimated minimum central pressure is 1009 mb (29.80 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Hagen/Beven
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