North Pacific High Seas Forecast

FZPN01 KWBC 221626
HSFEP1

HIGH SEAS FORECAST 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC MON SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 

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 SEP 22. 
24 HOUR FORECAST VALID 1200 UTC SEP 23. 
48 HOUR FORECAST VALID 1200 UTC SEP 24. 

.WARNINGS. 

...STORM WARNING... 
.LOW 56137W 976 MB MOVING NE 20 KT. WITHIN 120 NM S SEMICIRCLE 
AND WITHIN 180 NM E OF A FRONT FROM LOW TO 54N133W TO 51N130W 
WINDS 35 TO 50 KT. SEAS 3 TO 5.5 M...HIGHEST S OF LOW. ALSO FROM 
49N TO 58N E OF 140W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M. ALSO 
FROM 44N TO 58N BETWEEN 126W AND 144W WINDS TO 25 KT. SEAS 2.5 
TO 4.5 M. ELSEWHERE N OF A LINE FROM 50N127W TO 42N140W TO 
40N143W WINDS TO 25 KT. SEAS TO 4 M...HIGHEST NEAR 49N134W.
.24 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED 
CONDITIONS DESCRIBED WITH LOW 56N141W BELOW. 

...STORM WARNING... 
.LOW 49N160E 988 MB MOVING NE 35 KT THEN SLOWING AND TURNING 
MORE E BY 24 HOURS. WITHIN 240 NM S QUADRANT WINDS 35 TO 50 KT. 
SEAS 4 TO 7 M. ALSO WITHIN 360 NM S SEMICIRCLE AND WITHIN 180 NM 
NE OF A FRONT FROM 52N165E TO 50N171E TO 44N175E WINDS 25 TO 40 
KT. SEAS 3 TO 5 M. ELSEWHERE FROM 38N TO 55N W OF 179E WINDS 20 
TO 30 KT. SEAS 2.5 TO 4.5 M...HIGHEST S OF LOW.
.24 HOUR FORECAST LOW 57N179E 975 MB. FRONT TO EXTEND FROM LOW 
CENTER TO 57N172W TO 53N168W TO 45N175W. BETWEEN 240 NM AND 480 
NM S AND SW QUADRANTS WINDS 35 TO 50 KT. SEAS 4.5 TO 7.5 M. 
ELSEWHERE BETWEEN 180 NM AND 660 NM S SEMICIRCLE AND WITHIN 240 
NM N...NE AND E OF FRONT WINDS 30 TO 45 KT. SEAS 3 TO 6.5 
M...HIGHEST S OF CENTER. ELSEWHERE FROM 42N TO 62N W OF 162W 
WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M. 
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 58N171W 976 MB 
AND NEW SECOND CENTER 57N157W 986 MB. BETWEEN 120 NM AND 420 NM 
S SEMICIRCLE OF FIRST CENTER WINDS 40 TO 50 KT. SEAS 5 TO 8 M. 
ELSEWHERE WITHIN 240 N SEMICIRCLE AND 540 NM S SEMICIRCLE OF 
FIRST CENTER...WITHIN 480 NM S QUADRANT OF SECOND CENTER...AND 
WITHIN 180 NM E OF A FRONT FROM SECOND CENTER TO 55N152W TO 
52N151W TO 48N155W TO 44N169W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 
M. 

...GALE WARNING... 
.LOW 57N150W 989 MB MOVING SE 15 KT. BETWEEN 120 NM AND 540 NM S 
QUADRANT AND BETWEEN 90 NM AND 480 NM SW QUADRANT WINDS 25 TO 40 
KT. SEAS 2.5 TO 4.5 M...HIGHEST NEAR 50N151W. ELSEWHERE WITHIN 
840 NM S AND SW QUADRANTS AND N OF 57N BETWEEN 150W AND 164W 
WINDS 20 TO 30 KT. SEAS TO 3 M. 
.24 HOUR FORECAST LOW 56N141W 1005 MB. FROM 51N TO 56N BETWEEN 
141W AND 155W AND WITHIN 240 NM E SEMICIRCLE WINDS 20 TO 30 KT. 
SEAS 2.5 TO 4.5 M....HIGHEST S OF CENTER.
.48 HOUR FORECAST LOW DISSIPATED INLAND AND ASSOCIATED 
CONDITIONS DESCRIBED BY LOW 57N157W ABOVE. 

...GALE WARNING... 
.24 HOUR FORECAST WITHIN 180 NM N OF A LINE FROM 35N160E TO 
36N165E AREA OF NE WINDS 25 TO 35 KT. SEAS 3 TO 4 M. ELSEWHERE S 
OF 40N BETWEEN 171E AND 160E WINDS TO 25 KT. SEAS TO 3 M. 
.48 HOUR FORECAST WITHIN 180 NM NW OF A LINE FROM 41N173E TO 
35N160E AREA OF NE WINDS 25 TO 40 KT. SEAS 3 TO 5.5 M...HIGHEST 
NEAR 160E. ELSEWHWERES OF A LINE FROM 44N176E TO 42N160E WINDS 
20 TO 30 KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR 31N160E WITH SE 
SWELL.

...GALE WARNING... 
.24 HOUR FORECAST WITHIN 240 NM NW OF A LINE FROM 38N141W TO 
33N155W TO 33N172W AREA OF N TO NE WINDS TO 25 KT. SEAS TO 3 M. 
.36 HOUR FORECAST STATIONARY FRONT TO EXTEND FROM 42N135W TO 
33N148W TO 30N158W TO 33N168W. WITHIN 180 NM NW OF FRONT BETWEEN 
141W AND 158W AREA OF N TO NE WINDS 25 TO 35 KT. SEAS 2.5 TO 4 
M. ELSEWHERE WITHIN 300 NM NW OF FRONT WINDS TO 25 KT. SEAS TO 3 
M. 
.48 HOUR FORECAST NEW LOW 33N146W 1013 MB. FRONT TO EXTEND FROM 
39N139W TO LOW CENTER TO 30N151W. WITHIN 180 NM W AND NW OF THE 
FRONT FROM 34N TO 40N WINDS 25 TO 35 KT. SEAS 3 TO 4.5 M. 
ELSEWHERE WITHIN AN AREA BOUNDED BY A LINE FROM 42N138W TO 
30N150W TO 30N174W TO 35N167W TO 40N150W TO 42N138W WINDS TO 25 
KT. SEAS 2.5 TO 3.5 M.

.SYNOPSIS AND FORECAST. 

.FROM 36N TO 44N BETWEEN 124W AND 127W AREA OF N TO NW WINDS 20 
TO 30 KT. SEAS 2.5 TO 3.5 M. 
.24 HOUR FORECAST FROM 34N TO 44N BETWEEN 124W AND 129W AREA OF 
N WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.48 HOUR FORECAST FROM 36N TO 50N BETWEEN 124W AND 130W AREA OF 
N TO NW WINDS TO 25 KT. SEAS TO 3 M. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM NE OF A LINE FROM 
50N137W TO 58N152W AND FROM 41N TO 50N W OF 176E. 
.24 HOUR FORECAST DENSE FOG FROM 43N TO 59N BETWEEN 171W AND 
175W AND N OF THE ALEUTIAN ISLANDS S OF 58N W OF 180W. 
.48 HOUR FORECAST DENSE FOG FROM 35N TO 43N W OF 172E. 

.FORECASTER BANCROFT. OCEAN PREDICTION CENTER.

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 MON SEP 22.
24 HOUR FORECAST VALID 1200 UTC TUE SEP 23.
48 HOUR FORECAST VALID 1200 UTC WED SEP 24.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM NARDA NEAR 15.7N 102.9W 1000 MB AT 1500 UTC SEP
22 MOVING WNW OR 285 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NE
QUADRANT...30 NM SE QUADRANT...20 NM SW QUADRANT...AND 50 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 0 NM OF CENTER EXCEPT 45 NM
NE QUADRANT WITH SEAS TO 5 M. ELSEWHERE WITHIN 17N100W TO 
17N102W TO 17N105W TO 15N105W TO 14N104W TO 14N101W TO 17N100W W 
WINDS 20 TO 33 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST HURRICANE NARDA NEAR 16.3N 106.9W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...50 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 60 
NM SEMICIRCLE AND 30 NM S SEMICIRCLE WITH SEAS TO 5.5 M. 
ELSEWHERE WITHIN 08N103W TO 19N106W TO 17N109W TO 15N108W TO 
14N107W TO 16N104W TO 18N103W...INCLUDING NEAR CABO CORRIENTES...
WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST HURRICANE NARDA NEAR 16.1N 111.5W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 80 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 120 
NE QUADRANT...60 NM S SEMICIRCLE AND 90 NM NW QUADRANT WITH SEAS 
TO 8 M. ELSEWHERE WITHIN 17N108W TO 19N112W TO 17N115W TO 14N113W
TO 14N108W TO 17N108W NW WINDS 20 TO 33 KT. SEAS 3 TO 5.5 M. 
REMAINDER OF AREA WITHIN 20N108W TO 14N115W TO 12N111W TO 07N116W
TO 08N106W TO 12N102W TO 20N108W...INCLUDING NEAR CABO 
CORRIENTES...SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.

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.

.18 HOUR FORECAST WITHIN 12N102W TO 12N104W TO 11N106W TO
09N107W TO 08N106W TO 09N104W TO 12N102W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3 M IN SW SWELL.
.24 HOUR FORECAST WITHIN 11N105W TO 12N106W TO 11N107W TO 
10N107W TO 10N106W TO 11N105W SW WINDS 20 TO 25 KT. SEAS 2.5 TO 
3 M. ELSEWHERE WITHIN 11N102W TO 13N105W TO 11N110W TO 07N113W 
TO 07N109W TO 08N104W TO 11N102W WINDS 20 KT OR LESS. SEAS 2.5 
TO 3 M IN SW SWELL.
.48 HOUR FORECAST CONDITIONS TO MERGE WITH THOSE AS DESCRIBED 
IN REMAINDER OF AREA DESCRIBED ABOVE.

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

CONVECTION VALID AT 1515 UTC MON SEP 22...

.TROPICAL STORM NARDA...NUMEROUS STRONG WITHIN 60 NM OF CENTER...
EXCEPT 30 NM NE QUADRANT. NUMEROUS MODERATE TO STRONG FROM 13N
18N BETWEEN 104W AND 107W.

.TROPICAL WAVE ALONG 85W N OF 08N...SCATTERED MODERATE WITHIN 60
NM ESE OF WAVE FROM 06N TO 08N AND WITHIN 120 NM W OF WAVE FROM 
07N TO 10N.

.AN AREA OF NUMEROUS STRONG FROM 17N TO 23N BETWEEN 104W AND
109W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 10N85W TO 11N90W TO 13N97W. 
IT RESUMES FROM LOW PRES NEAR 21N116W 1009 MB TO 15N130W TO 
12N140W. NUMEROUS MODERATE TO STRONG FROM 09N TO 12N BETWEEN 
94W AND 99W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.