Tropical Storm SAM

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TROPICAL STORM SAM FORECAST/ADVISORY NUMBER   4
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
1500 UTC THU SEP 23 2021
 
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
 
TROPICAL STORM CENTER LOCATED NEAR 10.9N  38.1W AT 23/1500Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT  14 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT....... 40NE   0SE   0SW  40NW.
12 FT SEAS.. 60NE   0SE   0SW  30NW.
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 10.9N  38.1W AT 23/1500Z
AT 23/1200Z CENTER WAS LOCATED NEAR 10.8N  37.4W
 
FORECAST VALID 24/0000Z 11.3N  40.3W
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 30NE   0SE   0SW   0NW.
34 KT... 50NE  40SE   0SW  50NW.
 
FORECAST VALID 24/1200Z 11.9N  42.9W
MAX WIND  60 KT...GUSTS  75 KT.
50 KT... 30NE   0SE   0SW  20NW.
34 KT... 60NE  40SE   0SW  50NW.
 
FORECAST VALID 25/0000Z 12.3N  45.0W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 20NE   0SE   0SW   0NW.
50 KT... 30NE  30SE   0SW  30NW.
34 KT... 70NE  40SE  30SW  50NW.
 
FORECAST VALID 25/1200Z 12.7N  46.7W
MAX WIND  80 KT...GUSTS 100 KT.
64 KT... 20NE  20SE   0SW  20NW.
50 KT... 30NE  30SE  20SW  30NW.
34 KT... 80NE  60SE  40SW  70NW.
 
FORECAST VALID 26/0000Z 13.2N  48.2W
MAX WIND  90 KT...GUSTS 110 KT.
50 KT... 40NE  30SE  20SW  30NW.
34 KT... 90NE  70SE  50SW  70NW.
 
FORECAST VALID 26/1200Z 13.7N  49.4W
MAX WIND 100 KT...GUSTS 120 KT.
50 KT... 50NE  40SE  40SW  50NW.
34 KT... 90NE  80SE  60SW  80NW.
 
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 27/1200Z 15.3N  52.1W
MAX WIND 105 KT...GUSTS 130 KT.
 
OUTLOOK VALID 28/1200Z 17.4N  55.2W
MAX WIND 110 KT...GUSTS 135 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 10.9N  38.1W
 
NEXT ADVISORY AT 23/2100Z
 
$$
FORECASTER PAPIN
 
 
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