000
FZNT02 KNHC 230320
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC MON OCT 23 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

SECURITE

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 0000 UTC MON OCT 23.
24 HOUR FORECAST VALID 0000 UTC TUE OCT 24.
48 HOUR FORECAST VALID 0000 UTC WED OCT 25.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE TAMMY NEAR 20.8N 64.0W 993 MB AT 0300 UTC OCT 23 
MOVING NW OR 325 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 75 KT GUSTS
90 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE QUADRANT...100
NM SE QUADRANT...30 NM SW QUADRANT...AND 70 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 210 NM NE QUADRANT...150 NM SE 
QUADRANT...90 NM SW QUADRANT...AND 180 NM NW QUADRANT WITH SEAS 
TO 27 FT. ELSEWHERE...WITHIN 22N60W TO 23N63W TO 22N65W TO 21N66W
TO 18N63W TO 19N61W TO 22N60W...INCLUDING IN ATLANTIC EXPOSURES 
AND PASSAGES...WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF 
AREA...WITHIN 25N62W TO 31N62W TO 23N68W TO 19N67W TO 18N61W TO 
22N59W TO 25N62W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
SWELL.
.24 HOUR FORECAST HURRICANE TAMMY NEAR 22.5N 63.4W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...100 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
210 NM NE QUADRANT...150 NM SE QUADRANT...90 NM SW QUADRANT...AND
180 NM NW QUADRANT WITH SEAS TO 27 FT. ELSEWHERE...WITHIN 24N61W
TO 25N62W TO 24N65W TO 22N65W TO 21N63W TO 21N60W TO 24N61W 
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA...WITHIN 
31N65W TO 28N66W TO 24N69W TO 20N66W TO 20N61W TO 24N60W TO 
31N65W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE TAMMY NEAR 24.0N 61.6W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM E SEMICIRCLE...40 NM SW QUADRANT AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM N SEMICIRCLE...150 
NM SE QUADRANT...AND 120 NM SW QUADRANT WITH SEAS TO 27 FT. 
ELSEWHERE...WITHIN 31N58W TO 30N81W TO 24N80W TO 21N69W TO 22N58W
TO 31N58W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT.
.72 HOUR FORECAST HURRICANE TAMMY NEAR 26.6N 59.5W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL TAMMY NEAR 29.6N
60.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL TAMMY NEAR 30.5N
64.5W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 17N54W TO 17N55W TO 15N55W TO 15N54W TO 16N53W TO
17N54W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E TO SE SWELL.
.15 HOUR FORECAST CONDITIONS IMPROVE. 

.CARIBBEAN 06 HOUR FORECAST LOW PRES NEAR 12N82W 1007 MB. 
WITHIN 13N81W TO 13N82W TO 13N83W TO 12N83W TO 12N82W TO 12N81W 
TO 13N81W E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13N83W 1006 MB. WITHIN 13N82W TO 14N82W TO 14N83W TO 13N83W TO 
12N82W TO 13N82W...INCLUDING WITHIN 60 NM OF COAST OF 
NICARAGUA...E TO SE WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...INLAND
NEAR 14N84W 1007 MB. OVER FORECAST WATERS...CONDITIONS IMPROVE. 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF MEXICO 24 HOUR FORECAST WITHIN 28N95W TO 28N97W TO
27N97W TO 26N96W TO 27N95W TO 28N95W SE WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.39 HOUR FORECAST CONDITIONS IMPROVE. 

.GULF OF MEXICO 45 HOUR FORECAST WITHIN 29N83W TO 29N86W TO
26N86W TO 24N85W TO 23N80W TO 25N81W TO 29N83W...INCLUDING
STRAITS OF FLORIDA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.
.48 HOUR FORECAST LITTLE CHANGE.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.