Skip Navigation Links
NOAA NOAA United States Department of Commerce

Hurricane Sam Forecast Advisory


Home   Public Adv   Fcst Adv   Discussion   Wind Probs   Graphics   Archive  


000
WTNT23 KNHC 282038
TCMAT3

HURRICANE SAM FORECAST/ADVISORY NUMBER  25
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
2100 UTC TUE SEP 28 2021

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 17.9N  55.0W AT 28/2100Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT   8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  947 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 120SE  90SW 110NW.
12 FT SEAS..180NE  90SE  90SW 180NW.
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 17.9N  55.0W AT 28/2100Z
AT 28/1800Z CENTER WAS LOCATED NEAR 17.7N  54.7W

FORECAST VALID 29/0600Z 18.6N  55.9W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 35NE  30SE  25SW  30NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 120SE  90SW 100NW.

FORECAST VALID 29/1800Z 19.7N  57.4W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 35NE  30SE  25SW  30NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 120SE  70SW  90NW.

FORECAST VALID 30/0600Z 21.0N  59.1W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 40NE  35SE  25SW  35NW.
50 KT... 60NE  50SE  40SW  50NW.
34 KT...110NE 120SE  70SW  90NW.

FORECAST VALID 30/1800Z 22.8N  60.6W
MAX WIND 110 KT...GUSTS 135 KT.
64 KT... 45NE  40SE  30SW  40NW.
50 KT... 70NE  60SE  40SW  50NW.
34 KT...120NE 120SE  80SW 100NW.

FORECAST VALID 01/0600Z 25.0N  61.6W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 70NE  60SE  50SW  60NW.
34 KT...120NE 120SE  90SW 100NW.

FORECAST VALID 01/1800Z 27.7N  62.0W
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 02/1800Z 33.5N  59.0W
MAX WIND 100 KT...GUSTS 120 KT.

OUTLOOK VALID 03/1800Z 40.0N  53.5W
MAX WIND  90 KT...GUSTS 110 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 17.9N  55.0W

NEXT ADVISORY AT 29/0300Z

$$
FORECASTER PASCH