409
FZNT01 KWBC 250410
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 25.
24 HOUR FORECAST VALID 0000 UTC SEP 26.
48 HOUR FORECAST VALID 0000 UTC SEP 27.

.WARNINGS.

...STORM WARNING...
.LOW 38N59W 998 MB MOVING SE 10 KT. WITHIN 120 NM NW AND S
SEMICIRCLES 35 TO 50 KT. SEAS 14 TO 23 FT. ELSEWHERE WITHIN 120
NM SW AND 240 NM NW QUADRANTS...AND FROM 39N TO 43N BETWEEN 50W
AND 62W WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.
.24 HOUR FORECAST LOW 37N56W 1002 MB. WITHIN 180 NM NW AND N OF
A LINE FROM 41N50W TO 39N56W TO 37N59W WINDS 25 TO 40 KT. SEAS
10 TO 18 FT. ELSEWHERE WITHIN 600 NM NE...480 NM NW...420 NM
W...180 NM SW AND 180 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS 8
TO 14 FT.
.48 HOUR FORECAST LOW 37N51W 1005 MB. FROM 42N TO 44N BETWEEN
41W AND 47W WINDS 25 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE WITHIN
540 NM N...360 NM NW AND 240 NM SE QUADRANTS...AND FROM 41N TO
44N E OF 50W WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.LOW 49N37W 996 MB MOVING SE 35 KT. FROM 44N TO 53N E OF 43W
WINDS 25 TO 40 KT. SEAS 10 TO 18 FT. ELSEWHERE WITHIN 420 NM N
AND 360 NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

...GALE WARNING...
.24 HOUR FORECAST FROM 59N TO 61N BETWEEN 46W AND 50W WINDS 25
TO 35 KT. SEAS TO 10 FT. ELSEWHERE WITHIN 120 NM SW AND S OF A
LINE FROM 63N50W TO 60N46W TO 60N40W WINDS 20 TO 30 KT. SEAS TO
8 FT.
.48 HOUR FORECAST LOW 59N35W 1010 MB. WITHIN 300 NM SW
QUADRANT...AND WITHIN 120 NM OF THE E COAST OF GREENLAND S OF
64N WINDS TO 25 KT. SEAS TO 9 FT.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST EXCEPT WHERE NOTED IN HURRICANE WARNING
BELOW...S OF 34N W OF 77W 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 0000 UTC WED SEP 25.
24 HOUR FORECAST VALID 0000 UTC THU SEP 26.
48 HOUR FORECAST VALID 0000 UTC FRI SEP 27.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM HELENE NEAR 19.9N 85.5W 991 MB AT 0300 UTC SEP
25 MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM E
SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 30
NM W SEMICIRCLE...120 NM NE QUADRANT AND 150 NM SE QUADRANT WITH
SEAS TO 20 FT. ELSEWHERE...WITHIN 22N80W TO 24N84W TO 21N87W TO
21N83W TO 16N82W TO 18N80W TO 22N80W...INCLUDING STRAITS OF
FLORIDA AND IN YUCATAN CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12
FT.
.12 HOUR FORECAST HURRICANE HELENE NEAR 21.1N 86.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 210 NM E SEMICIRCLE AND 60 NM W SEMICIRCLE. SEAS 12 FT OR
GREATER WITHIN 180 NM NE QUADRANT...210 NM SE QUADRANT...60 NM SW
QUADRANT...AND 90 NM NW QUADRANT WITH SEAS TO 24 FT.
ELSEWHERE...WITHIN 23N82W TO 27N83W TO 23N89W TO 19N87W TO 16N82W
TO 19N80W TO 23N82W...INCLUDING STRAITS OF FLORIDA...WINDS 20 TO
33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 22.7N 86.4W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS AND
SEAS 12 FT OR GREATER WITHIN 240 NM NE QUADRANT...250 NM SE
QUADRANT...80 NM SW QUADRANT...AND 100 NM NW QUADRANT WITH SEAS
TO 26 FT. ELSEWHERE...WITHIN 25N80W TO 29N83W TO 26N90W TO 22N91W
TO 19N86W TO 19N81W TO 25N80W...INCLUDING STRAITS OF
FLORIDA...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST HURRICANE HELENE NEAR 29.5N 84.2W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
AND SEAS 12 FT OR GREATER WITHIN 210 NM NE QUADRANT...240 NM SE
QUADRANT...140 NM SW QUADRANT...AND 100 NM NW QUADRANT WITH SEAS
TO 28 FT. ELSEWHERE...WITHIN 31N78W TO 27N86W TO 30N86W TO 27N96W
TO 23N92W TO 21N82W TO 31N78W...INCLUDING STRAITS OF FLORIDA AND
IN YUCATAN CHANNEL...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 24 HOUR FORECAST LOW PRES NEAR 15N35W 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.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N40W 1007 MB. WITHIN 20N35W TO 21N38W TO 20N41W TO 17N42W TO
16N39W TO 17N36W TO 20N35W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.

.ATLC 33 HOUR FORECAST WITHIN 31N62W TO 31N63.5W TO 30.5N63.5W
TO 31N62W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.