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Hurricane Sam Forecast Advisory


000
WTNT23 KNHC 270248
TCMAT3

HURRICANE SAM FORECAST/ADVISORY NUMBER  18
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
0300 UTC MON SEP 27 2021

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 14.7N  50.8W AT 27/0300Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT   6 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  943 MB
EYE DIAMETER  15 NM
MAX SUSTAINED WINDS 125 KT WITH GUSTS TO 150 KT.
64 KT....... 25NE  20SE  20SW  20NW.
50 KT....... 40NE  30SE  25SW  30NW.
34 KT....... 80NE  80SE  60SW  70NW.
12 FT SEAS..120NE  75SE  90SW 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 14.7N  50.8W AT 27/0300Z
AT 27/0000Z CENTER WAS LOCATED NEAR 14.5N  50.6W

FORECAST VALID 27/1200Z 15.3N  51.6W
MAX WIND 125 KT...GUSTS 150 KT.
64 KT... 25NE  20SE  20SW  20NW.
50 KT... 40NE  30SE  25SW  30NW.
34 KT... 90NE  80SE  60SW  70NW.

FORECAST VALID 28/0000Z 16.2N  52.8W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 25NE  20SE  20SW  20NW.
50 KT... 50NE  40SE  30SW  40NW.
34 KT... 90NE  80SE  60SW  70NW.

FORECAST VALID 28/1200Z 17.0N  53.9W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 30NE  25SE  20SW  25NW.
50 KT... 50NE  40SE  30SW  40NW.
34 KT... 90NE  80SE  60SW  80NW.

FORECAST VALID 29/0000Z 17.8N  55.0W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 35NE  30SE  25SW  30NW.
50 KT... 50NE  45SE  35SW  40NW.
34 KT... 90NE  80SE  70SW  80NW.

FORECAST VALID 29/1200Z 18.7N  56.3W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT... 50NE  50SE  40SW  40NW.
34 KT...100NE  90SE  70SW  80NW.

FORECAST VALID 30/0000Z 20.0N  58.0W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT... 60NE  50SE  45SW  45NW.
34 KT...110NE  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 01/0000Z 23.4N  61.0W
MAX WIND 110 KT...GUSTS 135 KT.

OUTLOOK VALID 02/0000Z 28.4N  62.6W
MAX WIND 105 KT...GUSTS 130 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.7N  50.8W

NEXT ADVISORY AT 27/0900Z

$$
FORECASTER STEWART




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