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HURRICANE TAMMY FORECAST/ADVISORY NUMBER  20
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL202023
0900 UTC MON OCT 23 2023
 
NOTICE... LAND-BASED TROPICAL CYCLONE WATCHES AND WARNINGS ARE NO
LONGER INCLUDED IN THE TROPICAL CYCLONE FORECAST/ADVISORY...(TCM).
CURRENT LAND-BASED COASTAL WATCHES AND WARNINGS CAN BE FOUND IN THE
MOST RECENTLY ISSUED TROPICAL CYCLONE PUBLIC ADVISORY...(TCP).
 
HURRICANE CENTER LOCATED NEAR 21.4N  64.0W AT 23/0900Z
POSITION ACCURATE WITHIN  25 NM
 
PRESENT MOVEMENT TOWARD THE NORTH OR 355 DEGREES AT   9 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  993 MB
MAX SUSTAINED WINDS  70 KT WITH GUSTS TO  85 KT.
64 KT....... 20NE  15SE  10SW  20NW.
50 KT....... 40NE  20SE  20SW  30NW.
34 KT.......100NE 110SE  40SW  70NW.
12 FT SEAS..180NE 150SE 120SW 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 21.4N  64.0W AT 23/0900Z
AT 23/0600Z CENTER WAS LOCATED NEAR 21.0N  64.0W
 
FORECAST VALID 23/1800Z 22.2N  63.7W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 20NE  15SE  10SW  15NW.
50 KT... 40NE  30SE  20SW  30NW.
34 KT...100NE 110SE  40SW  70NW.
 
FORECAST VALID 24/0600Z 23.2N  62.9W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  20SE  10SW  10NW.
50 KT... 40NE  35SE  20SW  30NW.
34 KT...100NE 110SE  50SW  80NW.
 
FORECAST VALID 24/1800Z 24.1N  61.7W
MAX WIND  80 KT...GUSTS 100 KT.
64 KT... 20NE  25SE  15SW  20NW.
50 KT... 40NE  45SE  30SW  40NW.
34 KT...110NE 110SE  70SW 100NW.
 
FORECAST VALID 25/0600Z 25.1N  60.5W
MAX WIND  80 KT...GUSTS 100 KT.
64 KT... 30NE  30SE  20SW  25NW.
50 KT... 50NE  55SE  40SW  50NW.
34 KT...130NE 130SE  80SW 140NW.
 
FORECAST VALID 25/1800Z 26.5N  59.3W
MAX WIND  75 KT...GUSTS  90 KT.
50 KT... 60NE  50SE  50SW  60NW.
34 KT...170NE 130SE 100SW 190NW.
 
FORECAST VALID 26/0600Z 28.0N  58.7W
MAX WIND  65 KT...GUSTS  80 KT.
50 KT... 70NE  50SE  50SW  70NW.
34 KT...210NE 140SE 130SW 200NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 27/0600Z 30.4N  59.4W...POST-TROP/EXTRATROP
MAX WIND  55 KT...GUSTS  65 KT.
 
OUTLOOK VALID 28/0600Z 32.0N  62.9W...POST-TROP/EXTRATROP
MAX WIND  45 KT...GUSTS  55 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.4N  64.0W
 
NEXT ADVISORY AT 23/1500Z
 
$$
FORECASTER PAPIN
 
 
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