FZNT01 KWBC 271608
HSFAT1 1630
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC FRI SEP 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
[email protected](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 27.
24 HOUR FORECAST VALID 1200 UTC SEP 28.
48 HOUR FORECAST VALID 1200 UTC SEP 29.
.WARNINGS.
…HURRICANE WARNING…
.HURRICANE ISAAC NEAR 37.4N 46.8W 981 MB AT 1500 UTC SEP 27
MOVING ENE OR 065 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 65 KT
GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER
EXCEPT 40 NM NE QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM S
SEMICIRCLE…70 NM NE QUADRANT AND 240 NM NW QUADRANT WITH SEAS
TO 23 FT. ELSEWHERE S OF 45N BETWEEN 40W AND 56W WINDS 20 TO 33
KT. SEAS TO 12 FT.
.24 HOUR FORECAST HURRICANE ISAAC NEAR 39.4N 40.9W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 120 NM E SEMICIRCLE AND 100 NM W SEMICIRCLE. SEAS 12 FT
OR GREATER WITHIN 240 NM E SEMICIRCLE…180 NM SW QUADRANT…AND
300 NM NW QUADRANT WITH SEAS TO 29 FT. ELSEWHERE S OF 45N E OF
48W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.48 HOUR FORECAST HURRICANE ISAAC NEAR 42.4N 36.6W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM NE QUADRANT…130 NM SE QUADRANT…110 NM SW
QUADRANT…AND 160 NM NW QUADRANT. SEAS 12 FT OR GREATER
WITHIN 300 NM NE QUADRANT…480 NM SE QUADRANT…300 NM SW
QUADRANT…AND 360 NM NW QUADRANT WITH SEAS TO 28 FT. ELSEWHERE S
OF 49N E OF 43W WINDS 20 TO 33 KT. SEAS TO 12 FT.
…TROPICAL STORM WARNING…
.TROPICAL STORM HELENE NEAR 35.1N 83.8W 975 MB AT 1500 UTC SEP
27 MOVING N OR 350 DEG AT 28 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE…120 NM NE QUADRANT AND 300 NM SE QUADRANT. SEAS 12
FT OR GREATER WITHIN 0 NM N SEMICIRCLE…420 NM SE QUADRANT AND
510 NM SW QUADRANT WITH SEAS TO 18 FT. ELSEWHERE S OF 36N W OF
72W WINDS 20 TO 33 KT. SEAS TO 12 FT.
.12 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 37.3N 85.6W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 37.5N 86.5W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS TO 9 FT.
ELSEWHERE S OF 40N W OF 70W WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE HELENE NEAR 37.5N 86.1W.
MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
…GALE WARNING…
.LOW 44N35W 1006 MB MOVING NE 15 KT. FROM 39N TO 48N E OF 40W
WINDS 25 TO 35 KT. SEAS 9 TO 13 FT.
.12 HOUR FORECAST LOW AND CONDITIONS E OF AREA.
…GALE WARNING…
.LOW 44N65W 1012 MB MOVING SE 15 KT. WITHIN 180 NM SE SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 43N57W 1006 MB. FROM 37N TO 48N BETWEEN
50W AND 66W WINDS 25 TO 35 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 41N54W 1000 MB. FROM 33N TO 48N BETWEEN 45W
AND 62W WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
…GALE WARNING…
.24 HOUR FORECAST N OF 61N BETWEEN W GREENLAND COAST AND 56W AREA
OF S TO SE WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST N OF 60N BETWEEN W GREENLAND COAST AND 59W AREA
OF S TO SE WINDS 25 TO 40 KT. SEAS 8 TO 13 FT…HIGHEST NEAR
67N55W. ELSEWHERE N OF 55N W OF 60W AREA OF W
GULF OF MEXICO
SYNOPSIS VALID 1200 UTC FRI SEP 27.
24 HOUR FORECAST VALID 1200 UTC SAT SEP 28.
48 HOUR FORECAST VALID 1200 UTC SUN SEP 29.
.WARNINGS.
…ATLC TROPICAL STORM WARNING…
.TROPICAL STORM JOYCE NEAR 18.1N 42.9W 1006 MB AT 1500 UTC SEP
27 MOVING NW OR 310 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM OF CENTER
EXCEPT 60 NM NE QUADRANT. SEAS 12 FT WITHIN 30 NM N SEMICIRCLE
AND 0 NM S SEMICIRCLE. ELSEWHERE WITHIN 19N39W TO 20N42W TO
19N44W TO 17N43W TO 17N41W TO 17N40W TO 19N39W WINDS 20 TO 33
KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 22N35W TO 24N38W
TO 24N42W TO 21N45W TO 16N43W TO 18N35W TO 22N35W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN E SWELL.
.24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 19.4N 46.1W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM NE QUADRANT…30 NM SE QUADRANT…20 NM SW
QUADRANT…AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90
NM OF N SEMICIRCLE AND 60 NM S SEMICIRCLE WITH SEAS TO 16 FT.
ELSEWHERE WITHIN 21N43W TO 22N46W TO 20N48W TO 19N47W TO 19N44W
TO 20N43W TO 21N43W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT.
REMAINDER OF AREA WITHIN 24N43W TO 23N47W TO 20N49W TO 17N47W TO
18N42W TO 20N41W TO 24N43W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN E TO SE SWELL.
.48 HOUR FORECAST TROPICAL STORM JOYCE NEAR 20.7N 48.8W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM NE QUADRANT…40 NM SE QUADRANT…20 NM SW
QUADRANT…AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90
NM N SEMICIRCLE WITH SEAS TO 14 FT. ELSEWHERE WITHIN 22N46W TO
23N48W TO 22N50W TO 20N49W TO 21N46W TO 22N46W WINDS 20 TO 33 KT.
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 24N46W TO 24N51W TO
21N53W TO 19N52W TO 18N48W TO 21N44W TO 24N46W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN E TO SE SWELL.
…ATLC TROPICAL STORM WARNING…
.TROPICAL STORM HELENE NEAR 35.1N 83.8W 975 MB AT 1500 UTC SEP
27 MOVING N OR 350 DEG AT 28 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM W
SEMICIRCLE…120 NM NE QUADRANT AND 300 NM SE QUADRANT. SEAS 12
FT OR GREATER WITHIN 0 NM N SEMICIRCLE…420 NM SE QUADRANT AND
510 NM SW QUADRANT WITH SEAS TO 18 FT. OVER FORECAST WATERS
WITHIN 31N75W TO 31N81W TO 26N80W TO 28N76W TO 31N75W S WINDS 20
TO 30 KT. SEAS 10 TO 12 FT IN SE TO S SWELL. WITHIN 29N83W TO
30N84W TO 30N86W TO 28N85W TO 28N83W TO 29N83W SW TO W WINDS 20
TO 25 KT. SEAS 8 TO 14 FT…HIGHEST N OF 27N E OF 83W. ELSEWHERE
WITHIN 27N83W TO 30N87W TO 28N90W TO 24N86W TO 24N83W TO 25N81W
TO 27N83W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW TO N SWELL.
.12 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 37.3N
85.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 37.5N
86.5W. 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 24 HOUR FORECAST WITHIN 21N35W TO 21N36W TO 19N37W TO
17N36W TO 17N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 22N35W TO 22N41W TO 18N40W TO 16N38W TO
15N35W TO 22N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN E
SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
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UUID C82A2A1C-7CEA-11EF-92AC-0AFB0B270000 TX 1
