475
FZNT01 KWBC 241558
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC TUE SEP 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 24.
24 HOUR FORECAST VALID 1200 UTC SEP 25.
48 HOUR FORECAST VALID 1200 UTC SEP 26.

.WARNINGS.

...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW 38N57W 1006 MB NEARLY STATIONARY.
WITHIN 180 NM N OF A FRONT FROM 38N62W TO THE LOW TO 39N50W WINDS
25 TO 40 KT. SEAS 9 TO 17 FT...HIGHEST NEAR 40N59W. ELSEWHERE
FROM 31N TO 37N BETWEEN 66W AND 72W AND WITHIN 300 NM N OF FRONT
FROM 37N66W TO THE LOW TO 40N46W AND FROM 36N TO 39N BETWEEN 47W
AND 51W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW 38N58W 1001 MB. BETWEEN 90 NM AND 240 NM NE
AND 60 NM AND 180 NM SW QUADRANTS AND BETWEEN 60 NM AND 180 NM NW
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 11 TO 21 FT. ELSEWHERE WITHIN
600 NM NE...240 NM SW AND 480 NM NW QUADRANTS WINDS 20 TO 30 KT.
SEAS 8 TO 14 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW 36N54W 1004 MB. BETWEEN 120 NM AND 540 NM N
AND WITHIN 240 NM S AND 420 NM W QUADRANTS WINDS 25 TO 35 KT.
SEAS 8 TO 15 FT. ELSEWHERE FROM 40N TO 47N E OF 50W WINDS 20 TO
30 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.LOW 52N37W 990 MB MOVING SE 20 KT. WITHIN 240 NM NW SEMICIRCLE
AND WITHIN 240 NM S AND SW QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO
17 FT...HIGHEST NEAR 54N38W. ELSEWHERE FROM 44N TO 59N E OF 51W
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW E OF THE AREA 46N27W 1002 MB. FROM 42N TO
53N E OF 40W WINDS 20 TO 30 KT. SEAS 8 TO 15 FT IN N SWELL.
ELSEWHERE FROM 42N TO 53N E OF 48W WINDS LESS THAN 25 KT. SEAS 8
TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW AND CONDITIONS E OF THE AREA.

.SYNOPSIS AND FORECAST.
.FROM 33N TO 40N E OF 40W AREA OF S TO SW WINDS TO 25 KT. SEAS TO
8 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST N OF 65N E OF 57W TO THE W COAST OF GREENLAND
AREA OF S WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.48 HOUR FORECAST NEW LOW 60N39W 1010 MB. BETWEEN 120 AND 240 NM
SE...120 NM AND 300 NM SW QUADRANTS AND WITHIN 180 NM N AND NE OF
A LINE FROM 56N44W TO 61N51W TO THE W COAST OF GREENLAND WINDS 20
TO 30 KT. SEAS 8 TO 12 FT.

.FORECASTER FUTTERMAN. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 1200 UTC TUE SEP 24.
24 HOUR FORECAST VALID 1200 UTC WED SEP 25.
48 HOUR FORECAST VALID 1200 UTC THU SEP 26.

.WARNINGS.

...CARIBBEAN AND GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM HELENE NEAR 19.5N 84.3W 1000 MB AT 1500 UTC SEP
24 MOVING NW OR 310 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE...100 NM NE QUADRANT AND 120 NM SE QUADRANT. SEAS 12
FT OR GREATER WITHIN 0 NM W SEMICIRCLE...90 NM NE QUADRANT AND
120 NM SE QUADRANT WITH SEAS TO 14 FT. ELSEWHERE WITHIN 210 NM E
SEMICIRCLE AND 120 NM W SEMICIRCLE OF CENTER WINDS 20 TO 33 KT.
SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HELENE NEAR 21.5N 86.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 210 NM E SEMICIRCLE...80 NM SW QUADRANT AND 100 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER...EXCEPT
30 NM SW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE N OF 18N AND W
OF 80W...INCLUDING THE YUCATAN CHANNEL...AND S OF 25N BETWEEN
82W AND 88W...INCLUDING THE STRAITS OF FLORIDA...WINDS 20 TO 33
KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST HURRICANE HELENE NEAR 25.9N 85.4W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 210 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE. SEAS 12 FT
OR GREATER FROM 22N TO 29N BETWEEN 82W AND 88W WITH SEAS TO 30
FT. ELSEWHERE FROM 21N TO 30N BETWEEN 80W AND 90W...INCLUDING
THE STRAITS OF FLORIDA...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
FROM 22N TO 27N BETWEEN 90W AND 92W WINDS 20 KT OF LESS. SEAS 8
TO 9 FT IN EASTERLY 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 N OF 30N BETWEEN 66W AND 71W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN N SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC 36 HOUR FORECAST NEW LOW PRES NEAR 15N36W 1008 MB. FROM
15N TO 19N E OF 36W E WINDS 20 TO 25 KT. SEAS 8 FT.
.48 HOUR FORECAST LOW PRES NEAR 16N37W 1008 MB. WITHIN 60 NM NE
QUADRANT OF CENTER WINDS 25 TO 30 KT. SEAS 9 TO 11 FT. ELSEWHERE
FROM 16N TO 20N E OF 38W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.ATLC 42 HOUR FORECAST N OF 27N W OF 78W SE WINDS 20 TO 25 KT.
SEAS BUILDING TO 8 FT.
.48 HOUR FORECAST FROM 23N TO 30N W OF 78W SE TO S WINDS 20 TO
25 KT. SEAS 8 FT N OF 27N.

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


.FORECASTER GR. NATIONAL HURRICANE CENTER.

$$