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Hurricane Sam Forecast Advisory


000
WTNT23 KNHC 280841
TCMAT3

HURRICANE SAM FORECAST/ADVISORY NUMBER  23
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
0900 UTC TUE SEP 28 2021

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 17.2N  53.9W AT 28/0900Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT   8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  953 MB
EYE DIAMETER  25 NM
MAX SUSTAINED WINDS 115 KT WITH GUSTS TO 140 KT.
64 KT....... 35NE  30SE  25SW  30NW.
50 KT....... 60NE  50SE  40SW  50NW.
34 KT.......110NE  90SE  70SW  90NW.
12 FT SEAS..120NE  90SE  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 17.2N  53.9W AT 28/0900Z
AT 28/0600Z CENTER WAS LOCATED NEAR 17.0N  53.6W

FORECAST VALID 28/1800Z 17.9N  54.7W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 35NE  30SE  25SW  30NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 100SE  70SW  90NW.

FORECAST VALID 29/0600Z 18.8N  55.9W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 35NE  30SE  25SW  30NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 100SE  70SW  90NW.

FORECAST VALID 29/1800Z 19.9N  57.4W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 40NE  35SE  25SW  35NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 100SE  70SW  90NW.

FORECAST VALID 30/0600Z 21.3N  59.0W
MAX WIND 110 KT...GUSTS 135 KT.
64 KT... 45NE  40SE  30SW  40NW.
50 KT... 70NE  60SE  40SW  50NW.
34 KT...120NE 110SE  80SW 100NW.

FORECAST VALID 30/1800Z 23.2N  60.5W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 70NE  60SE  50SW  60NW.
34 KT...120NE 120SE  90SW 100NW.

FORECAST VALID 01/0600Z 25.6N  61.5W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 70NE  70SE  50SW  60NW.
34 KT...130NE 130SE  90SW 100NW.

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 02/0600Z 31.4N  60.7W
MAX WIND 105 KT...GUSTS 130 KT.

OUTLOOK VALID 03/0600Z 39.0N  56.0W
MAX WIND  95 KT...GUSTS 115 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.2N  53.9W

NEXT ADVISORY AT 28/1500Z

$$
FORECASTER REINHART




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