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Hurricane Sam Forecast Advisory


878 
WTNT23 KNHC 242051
TCMAT3

HURRICANE SAM FORECAST/ADVISORY NUMBER   9
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
2100 UTC FRI SEP 24 2021

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 12.1N  44.8W AT 24/2100Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT  10 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  986 MB
MAX SUSTAINED WINDS  75 KT WITH GUSTS TO  90 KT.
64 KT....... 15NE   0SE   0SW  10NW.
50 KT....... 30NE  20SE  15SW  20NW.
34 KT....... 50NE  40SE  30SW  50NW.
12 FT SEAS.. 90NE  60SE  60SW  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 12.1N  44.8W AT 24/2100Z
AT 24/1800Z CENTER WAS LOCATED NEAR 11.9N  44.3W

FORECAST VALID 25/0600Z 12.3N  46.5W
MAX WIND  90 KT...GUSTS 110 KT.
64 KT... 20NE  15SE  10SW  15NW.
50 KT... 30NE  30SE  20SW  30NW.
34 KT... 70NE  50SE  40SW  60NW.

FORECAST VALID 25/1800Z 12.7N  48.1W
MAX WIND 105 KT...GUSTS 130 KT.
64 KT... 25NE  15SE  10SW  20NW.
50 KT... 40NE  30SE  20SW  30NW.
34 KT... 70NE  60SE  40SW  60NW.

FORECAST VALID 26/0600Z 13.1N  49.3W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 25NE  15SE  10SW  20NW.
50 KT... 40NE  30SE  20SW  40NW.
34 KT... 90NE  70SE  50SW  70NW.

FORECAST VALID 26/1800Z 13.5N  50.5W
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 27/0600Z 14.3N  51.7W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT... 50NE  40SE  30SW  50NW.
34 KT...100NE  80SE  60SW  80NW.

FORECAST VALID 27/1800Z 15.1N  52.9W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT... 50NE  40SE  30SW  40NW.
34 KT...110NE 100SE  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 28/1800Z 16.9N  55.1W
MAX WIND 110 KT...GUSTS 135 KT.

OUTLOOK VALID 29/1800Z 18.9N  58.1W
MAX WIND 110 KT...GUSTS 135 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.1N  44.8W

NEXT ADVISORY AT 25/0300Z

$$
FORECASTER PAPIN





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