491 
FZNT02 KNHC 262102
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU SEP 26 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP

SECURITE

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

SYNOPSIS VALID 1800 UTC THU SEP 26.
24 HOUR FORECAST VALID 1800 UTC FRI SEP 27.
48 HOUR FORECAST VALID 1800 UTC SAT SEP 28.

.WARNINGS.

...GULF OF MEXICO HURRICANE WARNING...
.HURRICANE HELENE NEAR 27.9N 84.6W 951 MB AT 2100 UTC SEP 26
MOVING NNE OR 025 DEG AT 20 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 240 NM NE
QUADRANT...270 NM SE QUADRANT...100 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM NE 
QUADRANT...310 NM SE QUADRANT...390 NM SW QUADRANT...AND 210 NM 
NW QUADRANT WITH SEAS TO 42 FT. ELSEWHERE WITHIN 25N86W TO 30N84W
TO 30N90W TO 23N93W TO 19N83W TO 23N80W TO 25N86W...INCLUDING
STRAITS OF FLORIDA AND IN YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT...EXCEPT 12 TO 22 FT E OF 87W. WITHIN 31N78W TO 
31N81W TO 27N80W TO 24N81W TO 23N79W TO 25N78W TO 
31N78W...INCLUDING STRAITS OF FLORIDA...SE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE INLAND NEAR
35.8N 85.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 60 KT. TROPICAL
STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE...120 NM NE QUADRANT 
AND 330 NM SE QUADRANT. OVER FORECAST WATERS WITHIN 29N83W TO 
28N93W TO 24N95W TO 23N86W TO 26N82W TO 29N83W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN N TO NE SWELL. WITHIN 31N74W TO 31N81W 
TO 28N80W TO 26N80W TO 31N74W S TO SW WINDS 20 TO 30 KT. SEAS 8 
TO 12 FT. 
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 37.1N 
87.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 
FT.

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 LOW PRES NEAR 16N39W 1007 MB. WITHIN 20N35W TO 21N38W TO 
20N40W TO 16N41W TO 15N38W TO 16N35W TO 20N35W WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
17.5N44W 1006 MB. WITHIN 22N40W TO 21N44W TO 19N46W TO 16N44W TO
16N42W TO 19N39W TO 22N40W E WINDS 20 TO 30 KT. SEAS 8 TO 10 FT 
IN E SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
18.5N47W 1004 MB. WITHIN 20N45W TO 21N46W TO 20N48W TO 18N47W TO
18N46W TO 19N45W TO 20N45W E WINDS 20 TO 30 KT. SEAS 10 TO 12 FT.
ELSEWHERE WITHIN 21N41W TO 23N44W TO 23N48W TO 21N50W TO 18N49W 
TO 18N43W TO 21N41W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E TO 
SE SWELL. WITHIN 21N35W TO 20N37W TO 18N37W TO 17N36W TO 16N35W 
TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE TO E SWELL.

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

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.