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Hurricane Sam Forecast Advisory


000
WTNT23 KNHC 252038
TCMAT3

HURRICANE SAM FORECAST/ADVISORY NUMBER  13
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
2100 UTC SAT SEP 25 2021

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 13.3N  48.5W AT 25/2100Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT   9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  943 MB
EYE DIAMETER  15 NM
MAX SUSTAINED WINDS 120 KT WITH GUSTS TO 145 KT.
64 KT....... 25NE  20SE  15SW  20NW.
50 KT....... 40NE  30SE  20SW  30NW.
34 KT....... 70NE  90SE  40SW  60NW.
12 FT SEAS..120NE  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 13.3N  48.5W AT 25/2100Z
AT 25/1800Z CENTER WAS LOCATED NEAR 13.1N  48.1W

FORECAST VALID 26/0600Z 13.7N  49.4W
MAX WIND 130 KT...GUSTS 160 KT.
64 KT... 25NE  20SE  15SW  20NW.
50 KT... 40NE  30SE  20SW  30NW.
34 KT... 70NE  90SE  40SW  60NW.

FORECAST VALID 26/1800Z 14.3N  50.5W
MAX WIND 125 KT...GUSTS 150 KT.
64 KT... 25NE  20SE  15SW  20NW.
50 KT... 40NE  30SE  20SW  30NW.
34 KT... 80NE  90SE  50SW  70NW.

FORECAST VALID 27/0600Z 14.9N  51.6W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 30NE  25SE  25SW  25NW.
50 KT... 50NE  40SE  30SW  40NW.
34 KT... 90NE  90SE  60SW  70NW.

FORECAST VALID 27/1800Z 15.7N  52.7W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 30NE  25SE  25SW  25NW.
50 KT... 50NE  40SE  30SW  40NW.
34 KT... 90NE  90SE  60SW  80NW.

FORECAST VALID 28/0600Z 16.6N  53.9W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT... 50NE  40SE  30SW  40NW.
34 KT... 90NE  90SE  60SW  80NW.

FORECAST VALID 28/1800Z 17.4N  55.0W
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 29/1800Z 19.5N  58.0W
MAX WIND 110 KT...GUSTS 135 KT.

OUTLOOK VALID 30/1800Z 22.5N  61.0W
MAX WIND 110 KT...GUSTS 135 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.3N  48.5W

NEXT ADVISORY AT 26/0300Z

$$
FORECASTER BEVEN




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