502 
FZNT02 KNHC 181604
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC MON SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MON SEP 18.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 19.
48 HOUR FORECAST VALID 1200 UTC WED SEP 20.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE NIGEL NEAR 27.2N 51.4W 984 MB AT 1500 UTC SEP 18 
MOVING NW OR 325 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 70 KT 
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM NE 
QUADRANT...110 NM SE QUADRANT...50 NM SW QUADRANT...AND 120 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM E SEMICIRCLE AND 
180 NM W SEMICIRCLE WITH SEAS TO 27 FT. ELSEWHERE FROM 24N TO 31N
BETWEEN 45W AND 56W WINDS 20 TO 33 KT. SEAS 10 TO 14 FT. 
REMAINDER OF AREA WITHIN 31N41W TO 31N59W TO 22N59W TO 18N54W TO 
24N43W TO 31N41W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED 
SWELL.
.24 HOUR FORECAST HURRICANE NIGEL NEAR 30.0N 53.9W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM NE QUADRANT...120 NM SE QUADRANT...90 NM SW 
QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
270 NM NE QUADRANT...240 NM SE QUADRANT...AND 210 NM W SEMICIRCLE
WITH SEAS TO 39 FT. ELSEWHERE FROM 26N TO 31N BETWEEN 48W AND 
58W WINDS 20 TO 33 KT. SEAS 10 TO 15 FT. REMAINDER OF AREA WITHIN
31N44W TO 31N61W TO 28N62W TO 22N59W TO 24N49W TO 31N44W WINDS 
20 KT OR LESS. SEAS 8 TO 13 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE NIGEL NEAR 34.6N 54.5W. MAXIMUM 
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS 
WITHIN 140 NM NE QUADRANT...150 NM SE QUADRANT...110 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
270 NM OF CENTER EXCEPT 240 NM NW QUADRANT WITH SEAS TO 38 FT. 
OVER FORECAST WATERS FROM 26N TO 31N BETWEEN 48W AND 66W WINDS 20
KT OR LESS. SEAS 8 TO 14 FT IN MIXED NW AND NE SWELL...HIGHEST 
ALONG 31N BETWEEN 53W AND 57W.
.72 HOUR FORECAST HURRICANE NIGEL NEAR 40.3N 47.7W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE NIGEL NEAR 46.5N 33.0W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL NIGEL NEAR 53.5N 
20.0W. 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 12 HOUR FORECAST WITHIN 30N35W TO 26N39W TO 22N39W TO
20N38W TO 19N35W TO 30N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN PRIMARILY NE SWELL.
.24 HOUR FORECAST WITHIN 28N35W TO 28N39W TO 26N41W TO 21N44W TO
19N43W TO 18N35W TO 28N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN PRIMARILY NE SWELL.
.48 HOUR FORECAST WITHIN 24N35W TO 26N42W TO 25N46W TO 21N47W TO
18N45W TO 19N35W TO 24N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN PRIMARILY NE SWELL.

.CARIBBEAN 06 HOUR FORECAST WITHIN 13N69W TO 13N73W TO 10N72W TO
11N69W TO 13N69W...INCLUDING THE GULF OF VENEZUELA...NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 13N69W TO 14N72W TO 11N74W TO 11N68W TO
13N69W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

$$
.FORECASTER HAGEN. NATIONAL HURRICANE CENTER.