698 WTNT23 KNHC 121432 TCMAT3 HURRICANE HELENE FORECAST/ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 1500 UTC WED SEP 12 2018 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. INTERESTS IN THE AZORES SHOULD MONITOR THE PROGRESS OF HELENE. HURRICANE CENTER LOCATED NEAR 20.3N 36.5W AT 12/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 977 MB EYE DIAMETER 20 NM MAX SUSTAINED WINDS 80 KT WITH GUSTS TO 100 KT. 64 KT....... 40NE 30SE 30SW 40NW. 50 KT....... 70NE 60SE 60SW 90NW. 34 KT.......150NE 110SE 90SW 140NW. 12 FT SEAS..240NE 240SE 300SW 300NW. 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 20.3N 36.5W AT 12/1500Z AT 12/1200Z CENTER WAS LOCATED NEAR 19.8N 36.3W FORECAST VALID 13/0000Z 22.0N 37.2W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 40NE 30SE 10SW 40NW. 50 KT... 70NE 60SE 60SW 80NW. 34 KT...150NE 110SE 90SW 140NW. FORECAST VALID 13/1200Z 24.5N 37.5W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 20NE 20SE 0SW 0NW. 50 KT... 60NE 60SE 60SW 80NW. 34 KT...140NE 110SE 80SW 110NW. FORECAST VALID 14/0000Z 27.5N 37.2W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 60NE 60SE 50SW 60NW. 34 KT...140NE 120SE 80SW 100NW. FORECAST VALID 14/1200Z 31.0N 36.5W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 60NE 50SE 30SW 30NW. 34 KT...130NE 120SE 70SW 90NW. FORECAST VALID 15/1200Z 37.7N 33.2W MAX WIND 45 KT...GUSTS 55 KT. 34 KT...120NE 130SE 60SW 70NW. 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 16/1200Z 42.5N 26.0W MAX WIND 45 KT...GUSTS 55 KT. OUTLOOK VALID 17/1200Z 47.5N 17.5W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.3N 36.5W NEXT ADVISORY AT 12/2100Z $$ FORECASTER AVILA