Hurricane Tammy Forecast Advisory Number 9

By | October 20, 2023

000
WTNT25 KNHC 201457
TCMAT5

HURRICANE TAMMY FORECAST/ADVISORY NUMBER   9
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL202023
1500 UTC FRI OCT 20 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 14.1N  58.6W AT 20/1500Z
POSITION ACCURATE WITHIN  20 NM

PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT   6 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  992 MB
MAX SUSTAINED WINDS  65 KT WITH GUSTS TO  80 KT.
50 KT....... 50NE   0SE   0SW   0NW.
34 KT.......110NE 120SE  20SW  80NW.
12 FT SEAS..270NE 180SE  90SW 270NW.
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 14.1N  58.6W AT 20/1500Z
AT 20/1200Z CENTER WAS LOCATED NEAR 14.0N  58.4W

FORECAST VALID 21/0000Z 15.1N  59.8W
MAX WIND  70 KT...GUSTS  85 KT.
64 KT... 20NE   0SE   0SW   0NW.
50 KT... 50NE  30SE   0SW  20NW.
34 KT...110NE 120SE  30SW  70NW.

FORECAST VALID 21/1200Z 16.4N  60.9W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  20SE   0SW  10NW.
50 KT... 50NE  40SE  10SW  20NW.
34 KT...110NE 110SE  40SW  70NW.

FORECAST VALID 22/0000Z 17.9N  61.9W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 20NE  20SE   0SW  15NW.
50 KT... 50NE  40SE  20SW  30NW.
34 KT...110NE 110SE  40SW  70NW.

FORECAST VALID 22/1200Z 19.3N  62.7W
MAX WIND  80 KT...GUSTS 100 KT.
64 KT... 20NE  20SE   0SW  15NW.
50 KT... 50NE  40SE  20SW  30NW.
34 KT...110NE 110SE  40SW  70NW.

FORECAST VALID 23/0000Z 20.6N  63.3W
MAX WIND  80 KT...GUSTS 100 KT.
50 KT... 50NE  40SE  20SW  30NW.
34 KT...110NE 110SE  40SW  70NW.

FORECAST VALID 23/1200Z 22.0N  63.3W
MAX WIND  80 KT...GUSTS 100 KT.
50 KT... 50NE  40SE  20SW  30NW.
34 KT...120NE 120SE  40SW  80NW.

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 24/1200Z 24.4N  61.4W
MAX WIND  80 KT...GUSTS 100 KT.

OUTLOOK VALID 25/1200Z 28.2N  57.7W
MAX WIND  75 KT...GUSTS  90 KT.

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.1N  58.6W

INTERMEDIATE PUBLIC ADVISORY...WTNT35 KNHC/MIATCPAT5...AT 20/1800Z

NEXT ADVISORY AT 20/2100Z

$$
FORECASTER BROWN


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