East and Central North Pacific High Seas Forecast

FZPN02 KWBC 162325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC TUE SEP 16 2025 

CCODE/1:31:12:01:00/AOW+POR/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 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 1800 UTC SEP 16. 
24 HOUR FORECAST VALID 1800 UTC SEP 17. 
48 HOUR FORECAST VALID 1800 UTC SEP 18. 

.WARNINGS. 

...STORM WARNING... 
.LOW 55N174E 977 MB WILL DRIFT W AND SW AND THEN MOVE SE 20 KT 
AFTER 24 HOURS. WITHIN 240 NM N AND 300 NM E QUADRANTS WINDS 35 
TO 50 KT. SEAS 5 TO 7.5 M. ELSEWHERE FROM 51N TO 59N BETWEEN 
166E AND 170W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M. 
.24 HOUR FORECAST LOW 53N173E 982 MB. WITHIN 240 NM SW 
SEMICIRCLE AND 360 NM NM N AND 240 NM W QUADRANTS WINDS 25 TO 45 
KT. SEAS 2.5 TO 5.5 M. 
.48 HOUR FORECAST COMPLEX LOW WITH MAIN NEW LOW 56N173W 989 MB. 
WITHIN 480 NM W AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M. 

...STORM WARNING... 
.LOW 50N137W 992 MB MOVING N 20 KT AND INTENSIFYING WHILE 
SLOWING AND THEN TURNING MORE NW AFTER 24 HOURS. FROM 42N TO 57N 
BETWEEN 130W AND 141W WINDS 25 TO 40 KT. SEAS 3.5 TO 6 M.  
.18 HOUR FORECAST LOW 56N139W 982 MB. WITHIN 180 NM E SEMICIRCLE 
WINDS 45 TO 60 KT. SEAS 5 TO 8.5 M. 
.24 HOUR FORECAST LOW 58N141W 989 MB. WITHIN 240 NM S SEMICIRCLE 
AND 120 NM OF LOW CENTER WINDS 30 TO 45 KT. SEAS 3 TO 6.5 M. 
.48 HOUR FORECAST LOW DISSIPATED INLAND AND CONDITIONS DESCRIBED 
WITH NEW LOW 58N141W DESCRIBED BELOW. 

...GALE WARNING... 
.LOW 58N149W 999 MB NEARLY STATIONARY. WITHIN 240 NM NE QUADRANT 
WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. 
.FORECAST LOW DISSIPATED WITH ASSOCIATED CONDITIONS DIMINISHED.

...GALE WARNING... 
.LOW 41N172W 1007 MB MOVING NE 30 KT. WITHIN 360 NM S AND SE 
QUADRANTS WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 48N165W 1002 MB. WITHIN 480 NM S AND SE 
QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M. 
.48 HOUR FORECAST LOW 55N152W 1000 MB. WITHIN 660 NM S QUADRANT 
WINDS 25 TO 35 KT. SEAS 2.5 TO 5.5 M. 

...GALE WARNING...
.LOW 52N168W 995 MB MOVING E 25 KT AND TURNING NE AFTER 24 
HOURS. FRONT FROM LOW TO 50N164W TO 44N176W. WITHIN 120 NM NE OF 
FRONT N OF 50N...AND 300 NM E AND SE OF FRONT WINDS 25 TO 40 KT. 
SEAS 2.5 TO 4.5 M. 
.24 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 54N156W 1001 MB AND 
SECOND LOW 54N148W 1003 MB. WITHIN 480 NM S QUADRANT OF SECOND 
LOW WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 58N141W 1007 MB. FRONT FROM LOW TO 56N137W 
TO 55N135W. E OF FRONT WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. 

...GALE WARNING... 
.24 HOUR FORECAST FROM 34N TO 45N BETWEEN 126W AND 134W AREA OF 
N TO NE WINDS TO 25 KT. SEAS TO 3 M.  
.48 HOUR FORECAST FROM 36N TO 44N BETWEEN 123W AND 127W AREA OF 
N WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M. ELSEWHERE FROM 33N TO 
44N BETWEEN 123W AND 130W AREA OF N WINDS 20 TO 30 KT. SEAS TO 3 
M.

.SYNOPSIS AND FORECAST. 

.LOW 31N166W 1018 MB DRIFTING W. FROM 30N TO 33N BETWEEN 145W 
AND 166W AREA OF E TO NE WINDS TO 25 KT. SEAS TO 2.5 M. 
.24 HOUR FORECAST LOW DISSIPATED.  FROM 30N TO 33N BETWEEN 145W 
AND 165W AREA OF E TO NE WINDS TO 25 KT. SEAS TO 2.5 M. 
.48 HOUR FORECAST FROM 30N TO 38N BETWEEN 130W AND 145W AREA OF 
E TO NE WINDS TO 25 KT. SEAS TO 2.5 M.

.48 HOUR FORECAST LOW NEAR 42N159E 1005 MB. WITHIN 300 NM S AND 
SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M.

.24 HOUR FORECAST DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM 
FROM 43N TO 49N BETWEEN 162W AND 169W. 
.48 HOUR FORECAST DENSE FOG FROM 52N TO 55N BETWEEN 144W AND 
152W. 

.FORECASTER ROWLAND. 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 1800 UTC TUE SEP 16.
24 HOUR FORECAST VALID 1800 UTC WED SEP 17.
48 HOUR FORECAST VALID 1800 UTC THU SEP 18.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION MARIO NEAR 23.0N 117.7W 1005 MB AT 2100 UTC
SEP 16 MOVING NW OR 310 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT. SEAS 4 M OR GREATER WITHIN 0 NM OF CENTER EXCEPT
60 NM NE QUADRANT WITH SEAS TO 4.0 M. ELSEWHERE WITHIN 24N116W
TO 25N118W TO 24N119W TO 22N118W TO 21N116W TO 23N116W TO 
24N116W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 23.9N 
118.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 26N118W
TO 26N119W TO 25N120W TO 24N120W TO 24N119W TO 25N117W TO 
26N118W WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 25.0N 
119.8W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. WITHIN 27N118W
TO 27N119W TO 27N120W TO 26N120W TO 25N119W TO 26N118W TO 
27N118W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW MARIO NEAR 25.5N 
120.3W. MAXIMUM SUSTAINED WINDS 15 KT GUSTS 20 KT. OVER FORECAST
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST...DISSIPATED.

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

.LOW PRES...INVEST EP96...NEAR 12N103W 1008 MB. WITHIN 12N99W TO
13N102W TO 10N105W TO 08N105W TO 08N103W TO 10N99W TO 12N99W
WINDS 20 TO 25 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 15N108W 
TO 12N117W TO 08N120W TO 05N111W TO 03N92W TO 06N91W TO 15N108W 
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST LOW PRES...INVEST EP96...POSSIBLE TROPICAL
CYCLONE...NEAR 14N106W 1006 MB. WITHIN 14N103W TO 13N106W TO 
11N106W TO 10N103W TO 11N102W TO 14N103W WINDS 20 TO 30 KT. SEAS
2.5 TO 3.5 M. ELSEWHERE WITHIN 12N101W TO 16N103W TO 11N106W TO 
12N110W TO 10N113W TO 09N102W TO 12N101W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.48 HOUR FORECAST  LOW PRES...INVEST EP96...POSSIBLE TROPICAL
CYCLONE...NEAR 15N109.5W 1004 MB. WITHIN 15N107W TO 16N108W TO 
15N112W TO 12N112W TO 12N109W TO 13N107W TO 15N107W WINDS 20 TO
30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 13N104W TO 15N105W TO
15N107W TO 11N110W TO 09N108W TO 10N106W TO 13N104W WINDS 20 KT 
OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.

.LOW PRES NEAR 12N128W 1011 MB. WITHIN 12N125W TO 13N127W TO 
13N128W TO 12N128W TO 10N127W TO 10N126W TO 12N125W SW TO W 
WINDS 20 TO 25 KT. SEAS 2.5 M.
.24 HOUR FORECAST LOW PRES DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.WITHIN 05N79W TO 06N83W TO 04N87W TO 00N88W TO 02S92W TO
03.4S81W TO 05N79W...EXCEPT LEE OF GALAPAGOS ISLANDS...WINDS 20 
KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 07N80W TO 07N81W TO 05N86W TO 03N86W TO
01N82W TO 04N79W TO 07N80W WINDS 20 KT OR LESS. SEAS 2.5 M IN S
TO SW SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.06 HOUR FORECAST WITHIN 16N94.5W TO 16.5N94.5W TO 16N95W TO
16N95.5W TO 15.5N96W TO 15.5N95W TO 16N94.5W...INCLUDING THE
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M.
.30 HOUR FORECAST WITHIN 16N94.5W TO 16.5N94.5W TO 16N95W TO 
15.5N95.5W TO 15N95.5W TO 15.5N94.5W TO 16N94.5W...INCLUDING THE 
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M.

.36 HOUR FORECAST WEAK COLD FRONT FROM 30N137.5W TO 28N140W. 
WITHIN 30N137W TO 30N140W TO 28N140W TO 29N139W TO 30N137W WINDS 
20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST DISSIPATING COLD FRONT FROM 30N131W TO
27.5N140W. WITHIN 30N130W TO 30N140W TO 27N140W TO 29N137W TO 
30N130W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED NE AND NW
SWELL.

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

CONVECTION VALID AT 2100 UTC TUE SEP 16...

.TROPICAL DEPRESSION MARIO...NONE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 10.5N74.5W TO S OF GULF OF 
PANAMA AND SW OF GULF OF PAPAGAYO TO LOW PRES...INVEST EP96... 
NEAR 12N103W TO LOW PRES NEAR 12N128W TO BEYOND 10N140W. 
NUMEROUS MODERATE ISOLATED STRONG FROM 02N TO 10.5N BETWEEN 77W 
AND 87.5W...AND FROM 08N TO 18N BETWEEN 101W AND 112W. SCATTERED
MODERATE ELSEWHERE FROM 05N TO 10.5N BETWEEN 88W AND 96W...FROM 
12N TO 16N BETWEEN 93.5W AND 101W...FROM 04N TO 13N BETWEEN 105W
AND 125W...FROM 17.5N TO 21.5N BETWEEN 110W AND 115W...AND FROM 
08N TO 10N BETWEEN 138W AND 140W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC SEP 16 2025.
24 HOUR FORECAST VALID 1800 UTC SEP 17 2025.
48 HOUR FORECAST VALID 1800 UTC SEP 18 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N168W 29N173W 30N177W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N168W 24N171W.
.48 HOUR FORECAST TROUGH 30N171W 26N173W.

.FRONT N OF AREA. TROUGH 30N145W 27N151W MOVING S SLOWLY.
.24 HOUR FORECAST TROUGH ABSORBED BY FRONT. FRONT 28N140W 28N149W
30N153W.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH 27N176E 25N169E 19N165E MOVING N SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 240 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 29N169E 26N165E 19N162E.
.48 HOUR FORECAST TROUGH 28N163E 21N160E.

.TROUGH 14N150W 12N155W 07N160W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 15N155W 08N161W.
.48 HOUR FORECAST TROUGH 16N161W 09N161W.

.48 HOUR FORECAST NEW TROUGH 30N163W 26N164W.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER ENTIRE FORECAST
AREA.

.MONSOON TROUGH 10N140W 09N148W. ISOLATED MODERATE TSTMS WITHIN
240 NM N OF MONSOON TROUGH AND WITHIN 120 NM S OF MONSOON TROUGH.

.ITCZ 08N162W 07N179E 07N160E. ISOLATED MODERATE TSTMS WITHIN 240
NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 27N TO 25N BETWEEN 175W AND 171W...
AND FROM 29N TO 27N BETWEEN 179W AND 177W.

$$

.FORECASTER TROTTER. HONOLULU HI.