801
FZPN01 KWBC 041618
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT OCT 04 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
PACIFIC 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 4 METERS 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

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC OCT 04.
24 HOUR FORECAST VALID 1200 UTC OCT 05.
48 HOUR FORECAST VALID 1200 UTC OCT 06.

.WARNINGS.

...GALE WARNING...
.LOW 60N179W 970 MB MOVING N 05 KT THEN TURNING NW AFTER 06
HOURS. N OF 51N W OF 160W WINDS 25 TO 40 KT. SEAS 3 TO 6
M...HIGHEST NEAR 56N174E.
.24 HOUR FORECAST LOW 61N180W 980 MB. FROM 52N TO 63N W OF 168W
WINDS 25 TO 40 KT. SEAS 3.5 TO 6 M...HIGHEST NEAR 56N177E.
 .48 HOUR FORECAST COMPLEX LOW 62N171W 998 MB. WITHIN 480 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS 3.5 TO 5 M. ELSEWHERE EXCEPT
WHERE OTHERWISE NOTED FROM 53N TO 60N BETWEEN 158W AND 178W WINDS
20 TO 30 KT. SEAS 2.5 TO 4.5 M.

...GALE WARNING...
.LOW 48N179E 1000 MB MOVING NE 30 KT. FROM 39N TO 49N BETWEEN
173W AND 169E WINDS 20 TO 30 KT. SEAS 3 TO 5 M. ELSEWHERE FROM
37N TO 52N BETWEEN 166W AND 160E WINDS TO 25 KT. SEAS 2.5 TO 4.5
M.
.24 HOUR FORECAST LOW 54N163W 996 MB. WITHIN 600 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. ELSEWHERE FROM 36N TO 54N
BETWEEN 155W AND 175E WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 58N151W 997 MB. FROM 50N TO 59N BETWEEN
143W AND 169W WINDS 25 TO 40 KT. SEAS 3 TO 6 M...HIGHEST NEAR
55N154W. ELSEWHERE N OF 38N BETWEEN 137W AND 169W WINDS 20 TO 30
KT. SEAS 2.5 TO 5 M.

...GALE WARNING...
.LOW 56N159W 1005 MB MOVING NE 10 KT. FROM 50N TO 58N BETWEEN
146W AND 160W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.12 HOUR FORECAST LOW 57N156W 1004 MB. WITHIN 60 NM N OF A LINE
FROM 58N153W TO 59N146W. WINDS 25 TO 35 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 58N154W 1003 MB. N OF A LINE FROM LOW
CENTER TO 59N148W TO 57N139W WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5
M. ELSEWHERE FROM 47N TO 58N BETWEEN 138W AND 158W WINDS 20 TO 30
KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST LOW DISSIPATED INLAND.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW W OF AREA 53N160E 996 MB. WITHIN 540 NM
SE QUADRANT WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW NW OF AREA 59N171E 981 MB. WITHIN 300 NM W
OF A LINE FROM 56N178E TO 49N165E WINDS 35 TO 45 KT. SEAS 3.5 TO
6 M. ALSO FROM 45N TO 60N W OF 166E WINDS 25 TO 35 KT. SEAS 2.5
TO 5 M.

...GALE WARNING...
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 45N163W 999 MB.
FROM 37N TO 45N W OF 176E WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.

.SYNOPSIS AND FORECAST.

.E OF A LINE FROM 41N126W TO 36N126W TO 31N121W AREA OF NW TO N
WINDS TO 25 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST FROM 30N TO 42N BETWEEN 118W AND 128W AREA OF
NW TO N WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST FROM 34N TO 45N BETWEEN 125W AND 134W AREA OF N
WINDS TO 25 KT. SEAS TO 3 M.

.COMPLEX LOW WITH MAIN CENTER 44N159W 1010 MB MOVING N 15 KT.
FROM 32N TO 49N BETWEEN 149W AND 159W WINDS 20 TO 30 KT. SEAS 2.5
TO 5 M. ELSEWHERE S OF 47N BETWEEN 149W AND 176W WINDS TO 25 KT.
SEAS 2.5 TO 4 M...HIGHEST S OF LOW.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.LOW 47N127W 1020 MB MOVING SE 15 KT. FROM 48N TO 53N BETWEEN
129W AND 135W AREA OF N TO NW WINDS LESS THAN 25 KT. SEAS LESS
THAN 2.5 M.
.24 HOUR FORECAST LOW DISSIPATED. FROM 44N TO 49N BETWEEN 127W
AND 131W AREA OF NW WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST WITHIN 90 NM N OF A LINE FROM 33N160W TO
32N169W TO 34N179W AREA OF E TO NE WINDS TO 25 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST FROM 36N TO 43N BETWEEN 153W AND 170E WINDS TO
25 KT. SEAS TO 3 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 46N TO 57N
BETWEEN 148W AND 163W.
.24 HOUR FORECAST DENSE FOG FROM 49N TO 59N BETWEEN 138W AND
155W.
.48 HOUR FORECAST DENSE FOG WITHIN 120 NM SE OF A LINE FROM
56N134W TO 55N138W TO 49N140W.

.FORECASTER HYDE. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC SAT OCT 04.
24 HOUR FORECAST VALID 1200 UTC SUN OCT 05.
48 HOUR FORECAST VALID 1200 UTC MON OCT 06.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM OCTAVE NEAR 14.6N 123.6W 1000 MB AT 1500 UTC OCT
04
MOVING NW OR 310 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS
60
KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER EXCEPT 30
NM
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM N SEMICIRCLE AND 75
NM
S SEMICIRCLE WITH SEAS TO 6 M. ELSEWHERE WITHIN 120 NM OF
CENTER...
EXCEPT 90 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3 TO 5 FT.
REMAINDER OF THE AREA FROM 10N TO 20N BETWEEN 116W AND 128W WINDS
20
KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM OCTAVE NEAR 15.5N 124.1W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM N SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 4 M
OR
GREATER WITHIN 90 NM OF CENTER...EXCEPT 60 NM SW QUADRANT WITH
SEAS
TO 6 M. ELSEWHERE WITHIN 120 NM OF CENTER...EXCEPT 90 NM SW
QUADRANT
WINDS 20 TO 33 KT. SEAS 3 TO 5 FT. REMAINDER OF THE AREA FROM 12N
TO
19N BETWEEN 121W AND 129W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN

MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM OCTAVE NEAR 16.0N 122.6W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM S SEMICIRCLE...50 NM NE QUADRANT AND 40 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM OF CENTER...EXCEPT 60
NM
SW QUADRANT WITH SEAS TO 5 M. ELSEWHERE WITHIN 120 NM OF
CENTER...
EXCEPT 90 NM SW QUADRANT WINDS 20 TO 33 KT. SEAS 3 TO 5 FT.
REMAINDER OF THE AREA FROM 13N TO 19N BETWEEN 121W AND 128W WINDS
20
KT OR LESS. SEAS 2.5 TO 3 M IN MIXED SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

...GALE WARNING...
.LOW PRESS 15N105.5W 1005 MB. WITHIN 180 NE QUADRANT  WINDS 20 TO
30
KT. SEAS 3 TO 4 FT. FROM 09N TO 14N BETWEEN 101W AND 110W SW TO W

WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N106W 1000 MB. WITHIN 90 NM OF CENTER...EXCEPT 75 NM NW
QUADRANT
WINDS 30 TO 40 KT. SEAS 3 TO 5 FT. ELSEWHERE FROM 09N TO 17N
BETWEEN
102W AND 110W WINDS 20 TO 30 KT. SEAS 3 TO 4 FT. REMAINDER OF THE

AREA FROM 08N TO 18N BETWEEN 101W AND 112W WINDS 20 KT OR LESS.
SEAS
2.5 TO 3 M IN MIXED SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N107W 998 MB. WITHIN 135 NM OF CENTER...EXCEPT 180 NM NE
QUADRANT
WINDS 30 TO 45 KT. SEAS 4 TO 6 M. ELSEWHERE FROM 12N TO 19N
BETWEEN
103W AND 111W WINDS 20 TO 30 KT. SEAS 3 TO 4 FT. REMAINDER OF THE

AREA FROM 08N TO 21N BETWEEN 100W AND 112W WINDS 20 KT OR LESS.
SEAS
2.5 TO 3 M IN MIXED SWELL.

.SYNOPSIS AND FORECAST.

.N OF 20N BETWEEN 115W AND 140W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0
M IN NW SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 1500 UTC SAT OCT 4...

.TROPICAL STORM OCTAVE...NUMEROUS MODERATE TO STRONG WITHIN 120
NM SW SEMICIRCLE.

.LOW PRES (EP99)...NUMEROUS MODERATE TO STRONG FROM 14N TO
18N BETWEEN 104W AND 108W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM 09N83W TO 12N95W TO LOW PRESSURE
LOCATED NEAR 15N105.5W...THEN RESUMES SW OF OCTAVE FROM 11N126W
TO
09N140W. ASIDE FROM THE CONVECTION ASSOCIATED WITH OCTAVE AND
EP99...SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS NOTED
FROM 07N TO 13N BETWEEN 90W AND 100W.

.FORECASTER GR. NATIONAL HURRICANE CENTER.

$$