240
FZNT01 KWBC 250951
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC WED SEP 25 2024

CCODE/2:31:04:11:00/AOE+AOW/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

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

FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
ATLANTIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 12 FEET OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH,
AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER
CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO
PRESERVE CONTINUITY WHERE APPROPRIATE.

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 0600 UTC SEP 25.
24 HOUR FORECAST VALID 0600 UTC SEP 26.
48 HOUR FORECAST VALID 0600 UTC SEP 27.

.WARNINGS.

...STORM WARNING...
.LOW 37N59W 997 MB MOVING E 10 KT. WITHIN 120 NM NW QUADRANT AND
60 NM S SEMICIRCLE 35 TO 50 KT. SEAS 14 TO 23 FT. ELSEWHERE
WITHIN 180 NM S SEMICIRCLE AND 240 NM NW QUADRANT...ALSO WITHIN
180 NM N OF A LINE FROM 40N49W TO 39N57W TO 39N59W WINDS 25 TO
40 KT. SEAS 10 TO 18 FT. ALSO FROM 40N TO 45N BETWEEN 45W AND
63W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 37N54W 1002 MB. WITHIN 180 NM NW OF A LINE
FROM 41N49W TO 38N57W WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
ELSEWHERE FROM 33N TO 44N BETWEEN 50W AND 62W...ALSO FROM 41N TO
43N BETWEEN 43W AND 50W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 37N51W 1004 MB. WITHIN 240 NM N AND NW OF
A LINE FROM 42N35W TO 43N40W TO 40N50W TO 36N51W WINDS 20 TO 30
KT. SEAS TO 11 FT.

...GALE WARNING...
.LOW E OF AREA 48N30W 999 MB MOVING SE 35 KT. FROM 44N TO 51N E
OF 39W WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE E OF A LINE
FROM 55N35W TO 50N47W TO 42N35W WINDS 20 TO 30 KT. SEAS TO 12
FT. .24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

...GALE WARNING...
.24 HOUR FORECAST LOW 60N41W 1010 MB. WITHIN 120 NM SW OF A LINE
FROM 62N49W TO 59N43W WINDS 25 TO 35 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 59N33W 1010 MB. WITHIN 300 NM SW QUADRANT
WINDS TO 25 KT. SEAS TO 9 FT.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST EXCEPT WHERE NOTED IN HURRICANE WARNING
BELOW...S OF 35N W OF 75W WINDS 20 TO 33 KT. SEAS TO 12 FT.

.FORECASTER SHAW. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 0600 UTC WED SEP 25.
24 HOUR FORECAST VALID 0600 UTC THU SEP 26.
48 HOUR FORECAST VALID 0600 UTC FRI SEP 27.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM HELENE NEAR 20.7N 86.2W 985 MB AT 0900 UTC SEP
25 MOVING NW OR 325 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM E
SEMICIRCLE...50 NM SW QUADRANT AND 80 NM NW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 180 NM E SEMICIRCLE AND 60 NM W SEMICIRCLE WITH
SEAS TO 23 FT. ELSEWHERE...WITHIN 24N81W TO 23N88W TO 19N88W TO
19N84W TO 16N83W TO 19N80W TO 24N81W...INCLUDING STRAITS OF
FLORIDA AND IN YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12
FT.
.12 HOUR FORECAST HURRICANE HELENE NEAR 21.9N 86.5W. 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
210 NM NE QUADRANT...240 NM SE QUADRANT...90 NM SW QUADRANT...AND
120 NM NW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE...WITHIN 24N80W
TO 27N83W TO 25N89W TO 18N86W TO 17N82W TO 19N80W TO
24N80W...INCLUDING STRAITS OF FLORIDA...WINDS 20 TO 33 KT. SEAS 8
TO 12 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 24.1N 86.2W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM NE QUADRANT...250 NM SE QUADRANT...80 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
240 NM NE QUADRANT...270 NM SE QUADRANT...120 NM SW
QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 27 FT.
ELSEWHERE...WITHIN 30N80W TO 29N91W TO 23N92W TO 19N83W TO 20N80W
TO 24N79W TO 30N80W...INCLUDING STRAITS OF FLORIDA AND IN
YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST HURRICANE HELENE INLAND NEAR 32.0N 84.2W.
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE
WINDS WITHIN 210 NM NE QUADRANT...240 NM SE QUADRANT...100 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
270 NM SE QUADRANT AND 150 NM SW QUADRANT WITH SEAS TO 22 FT.
ELSEWHERE...WITHIN 31N76W TO 30N86W TO 27N96W TO 22N86W TO 24N81W
TO 31N76W...INCLUDING STRAITS OF FLORIDA...WINDS 20 TO 33 KT.
SEAS 8 TO 12 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 18 HOUR FORECAST LOW PRES NEAR 15N36W 1008 MB. WITHIN
20N35W TO 18N36W TO 17N36W TO 16N36W TO 16N35W TO 20N35W NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N39W 1003 MB. WITHIN 21N35W TO 20N37W TO 17N38W TO 15N36W TO
15N35W TO 21N35W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N43W 1001 MB. WITHIN 20N39W TO 20N41W TO 20N43W TO 17N41W TO
16N39W TO 18N38W TO 20N39W WINDS 20 TO 30 KT. SEAS 10 TO 11 FT.
ELSEWHERE...WITHIN 21N36W TO 22N39W TO 20N43W TO 17N43W TO
16N40W TO 19N35W TO 21N36W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN MIXED SWELL.

.ATLC 24 HOUR FORECAST WITHIN 31N60W TO 31N64W TO 30N63W TO
30N62W TO 30N61W TO 31N60W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN N TO NE SWELL.
.45 HOUR FORECAST CONDITIONS IMPROVE.

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

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.