713
FZNT02 KNHC 251535
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC WED SEP 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC WED SEP 25.
24 HOUR FORECAST VALID 1200 UTC THU SEP 26.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 27.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.HURRICANE HELENE NEAR 21.6N 86.3W 979 MB AT 1500 UTC SEP 25
MOVING NNW OR 330 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 70 KT
GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 210 NM NE
QUADRANT...240 NM SE QUADRANT...60 NM SW QUADRANT...AND 90 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM E SEMICIRCLE AND
90 NM W SEMICIRCLE WITH SEAS TO 26 FT. ELSEWHERE N OF 17N
BETWEEN 80W AND 87W...AND S OF 25N BETWEEN 80W AND 89W...
INCLUDING THE YUCATAN CHANNEL AND IN THE STRAITS OF FLORIDA
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 25.7N 85.7W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM NE QUADRANT...250 NM SE QUADRANT...120 NM SW
QUADRANT...AND 140 NM NW QUADRANT. SEAS 12 FT OR GREATER FROM
21.5N TO 29N BETWEEN 81W AND 90W WITH SEAS TO 32 FT. ELSEWHERE
FROM 20N TO 22N BETWEEN 80W AND 86.5W...INCLUDING THE YUCATAN
CHANNEL...AND FROM 22N TO 30N BETWEEN 80W AND 81W...INCLUDING
THE STRAITS OF FLORIDA WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM HELENE INLAND N OF AREA NEAR
34.3N 85.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL
STORM FORCE WINDS WITHIN 40 NM W SEMICIRCLE...70 NM NE QUADRANT
AND 330 NM SE QUADRANT. OVER FORECAST WATERS SEAS 12 FT OR
GREATER N OF 30N W OF 77W WITH SEAS TO 14 FT. N OF 24N AND E OF
A LINE FROM 24N83W TO 30N 87W SW WINDS 20 TO 30 KT. SEAS 8 TO 12
FT. ELSEWHERE N OF 22N BETWEEN 82W AND 95W WINDS 20 KT OR LESS.
SEAS 8 TO 11 FT IN NE TO E SWELL.

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 18 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...
NEAR 15N36W 1008 MB. FROM 15N TO 19N E OF 37W NE TO E WINDS 20
TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
15N37W 1007 MB. FROM 15N TO 20N W OF 39N NE TO E WINDS 20 TO 30
KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N42W 1004 MB. FROM 17N TO 21N BETWEEN 39W AND 44W NE TO E
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. FROM 15N TO 17N BETWEEN 40W
AND 44W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.

.ATLC 12 HOUR FORECAST N OF 27N W OF 78W SE WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT. FROM 23N TO 27N W OF 79W S WINDS 20 TO 30
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 23N TO 30N W OF 78W SE TO S WINDS 20 TO
30 KT. SEAS BUILDING TO 8 FT N OF 27N.
.48 HOUR FORECAST ELSEWHERE NW OF A LINE FROM 31N75W TO 25N80W S
TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT N OF 27N.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.