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Hurricane Sam Public Advisory Number 12

2021-09-25 16:40:51| National Hurricane Center (Atlantic)

Issued at 1100 AM AST Sat Sep 25 2021 000 WTNT33 KNHC 251440 TCPAT3 BULLETIN Hurricane Sam Advisory Number 12 NWS National Hurricane Center Miami FL AL182021 1100 AM AST Sat Sep 25 2021 ...SMALL BUT DANGEROUS SAM NOW A MAJOR HURRICANE... ...SOME ADDITIONAL STRENGTHENING EXPECTED THIS WEEKEND... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...12.9N 47.6W ABOUT 1095 MI...1760 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 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 1100 AM AST (1500 UTC), the center of Hurricane Sam was located near latitude 12.9 North, longitude 47.6 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 120 mph (195 km/h) with higher gusts. Sam is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is expected over the next day or so, and Sam is forecast to become a category 4 hurricane by Sunday. Some fluctuations in the hurricane's intensity are possible early next week. Sam is a small hurricane. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km). The estimated minimum central pressure is 960 mb (28.35 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 PM AST. $$ Forecaster Latto

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Subtropical Storm Teresa Public Advisory Number 3

2021-09-25 10:35:55| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sat Sep 25 2021 000 WTNT34 KNHC 250835 TCPAT4 BULLETIN Subtropical Storm Teresa Advisory Number 3 NWS National Hurricane Center Miami FL AL192021 500 AM AST Sat Sep 25 2021 ...TERESA REMAINS POORLY ORGANIZED... ...EXPECTED TO BECOME A REMNANT LOW BY TONIGHT... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...34.5N 65.5W ABOUT 155 MI...255 KM NNW OF BERMUDA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1009 MB...29.80 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 Subtropical Storm Teresa was located near latitude 34.5 North, longitude 65.5 West. The storm is moving toward the west-northwest near 6 mph (9 km/h). A turn to the north is expected later today, followed by a northeastward motion after that. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Teresa is expected to become a remnant by tonight and dissipate on Sunday. Winds of 40 mph extend outward up to 140 miles (220 km) from the center. The estimated minimum central pressure is 1009 mb (29.80 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Cangialosi

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Hurricane Sam Public Advisory Number 11

2021-09-25 10:32:54| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sat Sep 25 2021 090 WTNT33 KNHC 250832 TCPAT3 BULLETIN Hurricane Sam Advisory Number 11 NWS National Hurricane Center Miami FL AL182021 500 AM AST Sat Sep 25 2021 ...SAM ALMOST A MAJOR HURRICANE... ...ADDITIONAL STRENGTHENING EXPECTED... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...12.8N 46.7W ABOUT 1150 MI...1855 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...973 MB...28.74 INCHES WATCHES AND WARNINGS -------------------- 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 12.8 North, longitude 46.7 West. Sam is moving toward the west-northwest near 13 mph (20 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 110 mph (175 km/h) with higher gusts. Additional strengthening is forecast, and Sam is expected to become a major hurricane later today. Sam is a small hurricane. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 60 miles (95 km). The estimated minimum central pressure is 973 mb (28.74 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Cangialosi

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Subtropical Storm Teresa Public Advisory Number 2

2021-09-25 04:41:52| National Hurricane Center (Atlantic)

Issued at 1100 PM AST Fri Sep 24 2021 000 WTNT34 KNHC 250241 TCPAT4 BULLETIN Subtropical Storm Teresa Advisory Number 2 NWS National Hurricane Center Miami FL AL192021 1100 PM AST Fri Sep 24 2021 ...TERESA LIKELY TO BE SHORT-LIVED... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...34.3N 65.4W ABOUT 140 MI...230 KM NNW OF BERMUDA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 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 Subtropical Storm Teresa was located near latitude 34.3 North, longitude 65.4 West. The storm is moving toward the west-northwest near 10 mph (17 km/h), and a turn toward the north and northeast is expected during the next day or two. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Little change in strength is forecast during the next 36 hours. Teresa should dissipate in about two days. Winds of 40 mph extend outward up to 115 miles (185 km) from the center. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Pasch

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Hurricane Sam Public Advisory Number 9

2021-09-24 22:52:14| National Hurricane Center (Atlantic)

Issued at 500 PM AST Fri Sep 24 2021 000 WTNT33 KNHC 242052 TCPAT3 BULLETIN Hurricane Sam Advisory Number 9 NWS National Hurricane Center Miami FL AL182021 500 PM AST Fri Sep 24 2021 ...SAM'S INTENSIFICATION RESUMES AS THE HURRICANE SLOWS ITS FORWARD MOTION... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...12.1N 44.8W ABOUT 1290 MI...2075 KM ESE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...986 MB...29.12 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 12.1 North, longitude 44.8 West. Sam is moving toward the west near 12 mph (19 km/h) and this motion is expected to continue with a gradual decrease in forward speed and turn toward the west-northwest over the weekend. Maximum sustained winds have increased to near 85 mph (140 km/h) with higher gusts. Rapid intensification is forecast over the next several days, and Sam is expected to become a major hurricane on Saturday. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 60 miles (95 km). The estimated minimum central pressure is 986 mb (29.12 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Papin

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