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Hurricane Sam Public Advisory Number 30

2021-09-30 04:52:50| National Hurricane Center (Atlantic)

Issued at 1100 PM AST Wed Sep 29 2021 760 WTNT33 KNHC 300252 TCPAT3 BULLETIN Hurricane Sam Advisory Number 30 NWS National Hurricane Center Miami FL AL182021 1100 PM AST Wed Sep 29 2021 ...SAM GAINING STRENGTH AND SIZE OVER THE WESTERN ATLANTIC... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...20.6N 58.4W ABOUT 350 MI...560 KM ENE OF THE NORTHERN LEEWARD ISLANDS ABOUT 900 MI...1445 KM SSE OF BERMUDA MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in Bermuda should monitor the progress of Sam. A Tropical Storm Watch could be required for the island on Thursday. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Hurricane Sam was located near latitude 20.6 North, longitude 58.4 West. Sam is moving toward the northwest near 12 mph (19 km/h), and this general motion with an increase in forward speed is expected during the next couple of days. A turn toward the north and northeast is anticipated by Friday night. On the forecast track, Sam will continue to pass well to the east-northeast of the northern Leeward Islands through tonight, and pass to the east of Bermuda early Saturday. Data from a NOAA Hurricane Hunter aircraft indicate that maximum sustained winds have increased to 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 couple of days, but Sam is forecast to remain a major hurricane through late this week, with more significant weakening anticipated over the weekend. Hurricane-force winds extend outward up to 65 miles (100 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure based on NOAA Hurricane Hunter data is 940 mb (27.76 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. SURF: Swells generated by Sam will impact the Lesser Antilles during the next several days. Swells are expected to reach Bermuda and the Bahamas in a day or so, and then spread to the United States east coast by this weekend. 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 Blake

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Tropical Storm Victor Public Advisory Number 3

2021-09-30 04:46:53| National Hurricane Center (Atlantic)

Issued at 200 AM CVT Thu Sep 30 2021 217 WTNT35 KNHC 300246 TCPAT5 BULLETIN Tropical Storm Victor Advisory Number 3 NWS National Hurricane Center Miami FL AL202021 200 AM CVT Thu Sep 30 2021 ...VICTOR MOVING GENERALLY WEST-NORTHWESTWARD ACROSS THE FAR EASTERN ATLANTIC... SUMMARY OF 200 AM CVT...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...8.4N 26.7W ABOUT 555 MI...895 KM SSW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM CVT (0300 UTC), the center of Tropical Storm Victor was located near latitude 8.4 North, longitude 26.7 West. Victor is moving toward the west-northwest near 13 mph (20 km/h) and this general motion is expected to continue through Friday, followed by a turn toward the northwest late Friday or Friday night. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Steady strengthening is forecast, and Victor is expected to become a hurricane in a day or two. Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 800 AM CVT. $$ Forecaster Beven

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Hurricane Sam Public Advisory Number 29

2021-09-29 22:50:19| National Hurricane Center (Atlantic)

Issued at 500 PM AST Wed Sep 29 2021 000 WTNT33 KNHC 292050 TCPAT3 BULLETIN Hurricane Sam Advisory Number 29 NWS National Hurricane Center Miami FL AL182021 500 PM AST Wed Sep 29 2021 ...CATEGORY 4 HURRICANE SAM PASSING WELL TO THE EAST-NORTHEAST OF THE NORTHERN LEEWARD ISLANDS... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...20.2N 57.6W ABOUT 385 MI...620 KM ENE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...945 MB...27.91 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 20.2 North, longitude 57.6 West. Sam is moving toward the northwest near 9 mph (15 km/h), and this general motion with an increase in forward speed is expected during the next couple of days. A turn toward the north is forecast by Friday. On the forecast track, Sam will continue to pass well to the east-northeast of the northern Leeward Islands through tonight. 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. Some fluctuations in intensity are expected during the next couple of days, but Sam is forecast to remain a major hurricane through late this week. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). An Air Force Reserve Unit Hurricane Hunter aircraft reported a minimum central pressure of 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. SURF: Swells generated by Sam will impact the Lesser Antilles during the next several days. Swells are expected to reach Bermuda and the Bahamas in a day or so, and then spread to the United States east coast by this weekend. 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 Pasch

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Tropical Storm Victor Public Advisory Number 2

2021-09-29 22:43:16| National Hurricane Center (Atlantic)

Issued at 800 PM CVT Wed Sep 29 2021 000 WTNT35 KNHC 292043 TCPAT5 BULLETIN Tropical Storm Victor Advisory Number 2 NWS National Hurricane Center Miami FL AL202021 800 PM CVT Wed Sep 29 2021 ...VICTOR FORMS OVER THE EASTERN TROPICAL ATLANTIC... SUMMARY OF 800 PM CVT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...8.3N 25.5W ABOUT 540 MI...870 KM S OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 PM CVT (2100 UTC), the center of Tropical Storm Victor was located near latitude 8.3 North, longitude 25.5 West. Victor is moving toward the west-northwest near 13 mph (20 km/h) and this motion is expected to continue during the next couple of days, followed by a turn to the northwest. Maximum sustained winds have increased to near 40 mph (65 km/h) with higher gusts. Steady strengthening is forecast, and Victor is expected to become a hurricane in a day or two. Tropical-storm-force winds extend outward up to 60 miles (95 km) north of the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 200 AM CVT. $$ Forecaster Cangialosi

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Hurricane Sam Public Advisory Number 28

2021-09-29 16:41:52| National Hurricane Center (Atlantic)

Issued at 1100 AM AST Wed Sep 29 2021 000 WTNT33 KNHC 291441 TCPAT3 BULLETIN Hurricane Sam Advisory Number 28 NWS National Hurricane Center Miami FL AL182021 1100 AM AST Wed Sep 29 2021 ...POWERFUL SAM CONTINUES MOVING SLOWLY NORTHWESTWARD... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...19.4N 57.0W ABOUT 405 MI...655 KM ENE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...949 MB...28.03 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 19.4 North, longitude 57.0 West. Sam is moving toward the northwest near 9 mph (15 km/h), and this general motion with an increase in forward speed is expected during the next couple of days. A turn toward the north is forecast by Friday. On the forecast track, Sam will pass well to the east-northeast of the northern Leeward Islands through tonight. 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. Some fluctuations in intensity are expected during the next couple of days, but Sam is forecast to remain a major hurricane through late this week. Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 125 miles (205 km). The minimum central pressure estimated from NOAA Hurricane Hunter aircraft observations is 949 mb (28.03 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. SURF: Swells generated by Sam will impact the Lesser Antilles during the next several days. Swells are expected to reach Bermuda and the Bahamas in a day or so, and then spread to the United States east coast by this weekend. 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 Pasch

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