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Hurricane Sam Forecast Advisory Number 12

2021-09-25 16:40:57| National Hurricane Center (Atlantic)

Issued at 1500 UTC SAT SEP 25 2021 000 WTNT23 KNHC 251440 TCMAT3 HURRICANE SAM FORECAST/ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL182021 1500 UTC SAT SEP 25 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. HURRICANE CENTER LOCATED NEAR 12.9N 47.6W AT 25/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 960 MB MAX SUSTAINED WINDS 105 KT WITH GUSTS TO 130 KT. 64 KT....... 20NE 15SE 10SW 15NW. 50 KT....... 30NE 30SE 20SW 25NW. 34 KT....... 70NE 90SE 40SW 60NW. 12 FT SEAS.. 90NE 90SE 120SW 120NW. 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 12.9N 47.6W AT 25/1500Z AT 25/1200Z CENTER WAS LOCATED NEAR 12.8N 47.2W FORECAST VALID 26/0000Z 13.3N 48.7W MAX WIND 110 KT...GUSTS 135 KT. 64 KT... 20NE 15SE 10SW 15NW. 50 KT... 30NE 30SE 20SW 25NW. 34 KT... 70NE 90SE 40SW 60NW. FORECAST VALID 26/1200Z 13.7N 49.8W MAX WIND 115 KT...GUSTS 140 KT. 64 KT... 25NE 15SE 10SW 20NW. 50 KT... 40NE 30SE 20SW 30NW. 34 KT... 70NE 90SE 40SW 60NW. FORECAST VALID 27/0000Z 14.3N 50.8W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 25NE 15SE 10SW 20NW. 50 KT... 40NE 30SE 20SW 30NW. 34 KT... 80NE 90SE 50SW 70NW. FORECAST VALID 27/1200Z 15.0N 51.9W MAX WIND 120 KT...GUSTS 145 KT. 64 KT... 30NE 25SE 20SW 25NW. 50 KT... 50NE 40SE 30SW 40NW. 34 KT... 90NE 90SE 60SW 80NW. FORECAST VALID 28/0000Z 15.8N 53.0W MAX WIND 115 KT...GUSTS 140 KT. 50 KT... 50NE 40SE 30SW 40NW. 34 KT... 90NE 90SE 60SW 80NW. FORECAST VALID 28/1200Z 16.6N 54.1W MAX WIND 115 KT...GUSTS 140 KT. 50 KT... 50NE 50SE 40SW 40NW. 34 KT...100NE 90SE 70SW 90NW. 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 29/1200Z 18.4N 56.5W MAX WIND 110 KT...GUSTS 135 KT. OUTLOOK VALID 30/1200Z 20.7N 59.8W MAX WIND 110 KT...GUSTS 135 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.9N 47.6W NEXT ADVISORY AT 25/2100Z $$ FORECASTER LATTO

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