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Hurricane Sam Public Advisory Number 33
2021-09-30 22:55:37| National Hurricane Center (Atlantic)
Issued at 500 PM AST Thu Sep 30 2021 000 WTNT33 KNHC 302055 TCPAT3 BULLETIN Hurricane Sam Advisory Number 33 NWS National Hurricane Center Miami FL AL182021 500 PM AST Thu Sep 30 2021 ...INTENSE HURRICANE SAM EXPECTED TO BRING LARGE SWELLS AND DANGEROUS HIGH SURF TO A LARGE PORTION OF THE WESTERN ATLANTIC SHORELINE... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...23.6N 60.9W ABOUT 645 MI...1040 KM SSE OF BERMUDA MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...938 MB...27.70 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Bermuda Weather Service has issued a Tropical Storm Warning for Bermuda. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Bermuda A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the eye of Hurricane Sam was located by an Air Force Hurricane Hunter aircraft near latitude 23.6 North, longitude 60.9 West. Sam is moving toward the northwest near 14 mph (22 km/h), and a turn toward the north-northwest with an additional increase in forward speed is expected tonight. A turn toward the north is anticipated on Friday, and a northeastward motion is forecast to begin on Saturday. On the forecast track, the core of Sam will pass to the east of Bermuda early Saturday. 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 couple of days, but Sam is forecast to remain a major hurricane into Saturday, with more significant weakening anticipated later in the weekend. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The minimum central pressure reported by the Hurricane Hunters is 938 mb (27.70 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: Tropical storm conditions are expected on Bermuda beginning Friday night or early Saturday. SURF: Swells generated by Sam will impact the northern Leeward Islands and the Greater Antilles, including Puerto Rico, during the next few days. Swells are expected to reach Bermuda and the Bahamas by Friday, 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 intermediate advisory at 800 PM AST. Next complete advisory at 1100 PM AST. $$ Forecaster Pasch
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Hurricane Sam Forecast Advisory Number 33
2021-09-30 22:54:38| National Hurricane Center (Atlantic)
Issued at 2100 UTC THU SEP 30 2021 000 WTNT23 KNHC 302054 TCMAT3 HURRICANE SAM FORECAST/ADVISORY NUMBER 33 NWS NATIONAL HURRICANE CENTER MIAMI FL AL182021 2100 UTC THU SEP 30 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE BERMUDA WEATHER SERVICE HAS ISSUED A TROPICAL STORM WARNING FOR BERMUDA. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * BERMUDA A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. HURRICANE CENTER LOCATED NEAR 23.6N 60.9W AT 30/2100Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 320 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 938 MB MAX SUSTAINED WINDS 125 KT WITH GUSTS TO 150 KT. 64 KT....... 50NE 40SE 35SW 40NW. 50 KT....... 80NE 70SE 50SW 60NW. 34 KT.......130NE 120SE 90SW 110NW. 12 FT SEAS..210NE 150SE 180SW 210NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 23.6N 60.9W AT 30/2100Z AT 30/1800Z CENTER WAS LOCATED NEAR 23.0N 60.4W FORECAST VALID 01/0600Z 25.6N 61.5W MAX WIND 130 KT...GUSTS 160 KT. 64 KT... 50NE 45SE 35SW 45NW. 50 KT... 90NE 70SE 60SW 70NW. 34 KT...130NE 130SE 90SW 110NW. FORECAST VALID 01/1800Z 28.5N 61.9W MAX WIND 125 KT...GUSTS 150 KT. 64 KT... 50NE 45SE 35SW 45NW. 50 KT... 90NE 70SE 60SW 70NW. 34 KT...150NE 150SE 100SW 110NW. FORECAST VALID 02/0600Z 31.3N 61.4W MAX WIND 110 KT...GUSTS 135 KT. 64 KT... 50NE 45SE 40SW 45NW. 50 KT... 90NE 70SE 60SW 70NW. 34 KT...150NE 150SE 120SW 130NW. FORECAST VALID 02/1800Z 33.8N 60.1W MAX WIND 100 KT...GUSTS 120 KT. 64 KT... 50NE 50SE 40SW 40NW. 50 KT... 90NE 90SE 60SW 70NW. 34 KT...160NE 170SE 130SW 150NW. FORECAST VALID 03/0600Z 35.8N 58.3W MAX WIND 90 KT...GUSTS 110 KT. 50 KT... 90NE 90SE 70SW 70NW. 34 KT...170NE 180SE 150SW 160NW. FORECAST VALID 03/1800Z 37.4N 56.2W MAX WIND 85 KT...GUSTS 105 KT. 50 KT... 90NE 90SE 70SW 80NW. 34 KT...180NE 180SE 170SW 160NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 04/1800Z 42.5N 50.0W MAX WIND 75 KT...GUSTS 90 KT. OUTLOOK VALID 05/1800Z 47.5N 46.0W...POST-TROP/EXTRATROP MAX WIND 65 KT...GUSTS 80 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.6N 60.9W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 01/0000Z NEXT ADVISORY AT 01/0300Z $$ FORECASTER PASCH
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Tropical Storm Victor Public Advisory Number 6
2021-09-30 22:37:06| National Hurricane Center (Atlantic)
Issued at 500 PM AST Thu Sep 30 2021 000 WTNT35 KNHC 302036 TCPAT5 BULLETIN Tropical Storm Victor Advisory Number 6 NWS National Hurricane Center Miami FL AL202021 500 PM AST Thu Sep 30 2021 ...VICTOR HOLDING STEADY IN STRENGTH OVER THE TROPICAL EAST ATLANTIC... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...9.9N 30.0W ABOUT 585 MI...940 KM SW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 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 Tropical Storm Victor was located near latitude 9.9 North, longitude 30.0 West. Victor is moving toward the west-northwest near 14 mph (22 km/h). A west-northwest to northwest motion over the eastern tropical Atlantic is expected through the weekend. Maximum sustained winds remain near 45 mph (75 km/h) with higher gusts. Gradual strengthening is forecast during the next day or so. However, a weakening trend is expected to begin over the weekend. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Cangialosi
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Tropical Storm Victor Forecast Advisory Number 6
2021-09-30 22:36:08| National Hurricane Center (Atlantic)
Issued at 2100 UTC THU SEP 30 2021 000 WTNT25 KNHC 302036 TCMAT5 TROPICAL STORM VICTOR FORECAST/ADVISORY NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL AL202021 2100 UTC THU SEP 30 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 9.9N 30.0W AT 30/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT....... 90NE 0SE 0SW 90NW. 12 FT SEAS..150NE 105SE 45SW 90NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 9.9N 30.0W AT 30/2100Z AT 30/1800Z CENTER WAS LOCATED NEAR 9.7N 29.5W FORECAST VALID 01/0600Z 10.6N 31.4W MAX WIND 45 KT...GUSTS 55 KT. 34 KT...110NE 60SE 30SW 100NW. FORECAST VALID 01/1800Z 11.6N 33.1W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 0SE 0SW 30NW. 34 KT...110NE 70SE 50SW 100NW. FORECAST VALID 02/0600Z 12.9N 34.6W MAX WIND 50 KT...GUSTS 60 KT. 34 KT...110NE 70SE 50SW 80NW. FORECAST VALID 02/1800Z 14.5N 36.2W MAX WIND 45 KT...GUSTS 55 KT. 34 KT...100NE 60SE 40SW 70NW. FORECAST VALID 03/0600Z 16.4N 38.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 80NE 70SE 30SW 60NW. FORECAST VALID 03/1800Z 18.9N 40.0W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 70SE 30SW 50NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 04/1800Z 23.6N 42.7W MAX WIND 30 KT...GUSTS 40 KT. OUTLOOK VALID 05/1800Z 28.0N 42.9W MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 9.9N 30.0W NEXT ADVISORY AT 01/0300Z $$ FORECASTER CANGIALOSI
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Hurricane Sam Public Advisory Number 32A
2021-09-30 19:54:08| National Hurricane Center (Atlantic)
Issued at 200 PM AST Thu Sep 30 2021 000 WTNT33 KNHC 301753 TCPAT3 BULLETIN Hurricane Sam Intermediate Advisory Number 32A NWS National Hurricane Center Miami FL AL182021 200 PM AST Thu Sep 30 2021 ...SAM MAINTAINING CATEGORY 4 INTENSITY... ...EXPECTED TO BRING DANGEROUS HIGH SURF TO A LARGE PORTION OF THE WESTERN ATLANTIC SHORELINE... SUMMARY OF 200 PM AST...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...23.1N 60.5W ABOUT 685 MI...1105 KM SSE OF BERMUDA MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...941 MB...27.79 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Bermuda A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 PM AST (1800 UTC), the eye of Hurricane Sam was located by an Air Force Hurricane Hunter aircraft near latitude 23.1 North, longitude 60.5 West. Sam is moving toward the northwest near 13 mph (20 km/h), and a turn toward the north-northwest with an increase in forward speed is expected tonight. A turn toward the north is anticipated by late Friday, and a northeastward motion is forecast to begin on Saturday. On the forecast track, the core of Sam will pass to the east of Bermuda early Saturday. 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 couple of days, but Sam is forecast to remain a major hurricane through Saturday, with more significant weakening anticipated later in the weekend. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The minimum central pressure measured by the Air Force Hurricane Hunters is 941 mb (27.79 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: Tropical storm conditions are possible on Bermuda beginning Friday night or early Saturday. SURF: Swells generated by Sam will impact the northern Leeward Islands and the Greater Antilles, including Puerto Rico, during the next few days. Swells are expected to reach Bermuda and the Bahamas by Friday, 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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