East and Central North Pacific High Seas Forecast

FZPN02 KWBC 252325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC TUE AUG 25 2026 

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 S OF 67N AND N OF 30N E OF A LINE FROM THE BERING STRAIT 
TO 53N172E TO 50N180W TO 30N180W 

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS 

SYNOPSIS VALID 1800 UTC AUG 25. 
24 HOUR FORECAST VALID 1800 UTC AUG 26. 
48 HOUR FORECAST VALID 1800 UTC AUG 27. 

.WARNINGS. 

...TROPICAL STORM WARNING... 
.TROPICAL STORM LALA NEAR 35.0N 177.2W 994 MB AT 2100 UTC AUG 25 
MOVING WNW OR 300 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM N 
SEMICIRCLE...100 NM SE QUADRANT AND 70 NM SW QUADRANT. SEAS 4 M 
OR GREATER WITHIN 150 NM NW AND SE QUADRANTS...180 NM NE 
QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 6 M. ELSEWHERE FROM 
32N TO 41N BETWEEN 168W AND 180W WINDS 20 TO 33 KT. SEAS 2.5 TO 
4 M. 
.24 HOUR FORECAST TROPICAL STORM LALA NEAR 35.8N 178.6W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM ALL QUADRANTS EXCEPT 60 NM SW QUADRANT. SEAS 4 M OR 
GREATER WITHIN 240 NM NE QUADRANT...120 NM SE QUADRANT...180 NM 
SW QUADRANT AND 210 NM NW QUADRANT WITH SEAS TO 5 M. ELSEWHERE 
FROM 32N TO 43N BETWEEN 170W AND 180W WINDS 20 TO 33 KT. SEAS 
2.5 TO 4 M. 
.48 HOUR FORECAST TROPICAL STORM LALA NEAR 37.3N 179.8W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM NW AND SE QUADRANTS...80 NM NE QUADRANT AND 20 NM 
SW QUADRANT. SEAS 4 M OR GREATER WITHIN 240 NM NE SEMICIRCLE...0 
NM S...AND 180 NM W QUADRANTS WITH SEAS TO 5 M. ELSEWHERE FROM 
34N TO 42N BETWEEN 173W AND 180W WINDS 20 TO 33 KT. SEAS 2.5 TO 
4 M. 

...GALE WARNING... 
.24 HOUR FORECAST LOW W OF AREA 54N166E 996 MB. FROM 51N TO 54N 
BETWEEN 179E AND 174E WINDS 25 TO 35 KT. SEAS TO 3 M. 
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER W OF AREA NEAR 
57N173E 994 MB. WITHIN 240 NM E OF A LINE FROM 59N171W TO 
52N177W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE BETWEEN 
63N AND A LINE FROM 63N168W TO 58N160W TO 52N162W TO 47N175W AND 
FROM 47N TO 59N W OF 175W WINDS 20 TO 30 KT. SEAS TO 4.5 
M...HIGHEST NEAR 53N172E.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH MAIN CENTER NEAR 45N136W 1009 MB MOVING NE 10 
KT. FROM 40N TO 51N BETWEEN 136W AND 147W WINDS TO 25 KT. SEAS 
TO 3 M. 
.24 HOUR FORECAST COMBINED LOW 47N132W 1010 MB. FROM 41N TO 50N 
BETWEEN 132W AND 143W WINDS TO 25 KT. SEAS TO 3 M. 
.48 HOUR FORECAST LOW 49N128W 1014 MB. FROM 43N TO 50N BETWEEN 
128W AND 131W WINDS TO 25 KT. SEAS TO 2.5 M. 

.LOW WELL N OF AREA. FROM 59N TO 63N BETWEEN 167W AND 178W WINDS 
TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST N OF 65N W OF ALASKA WINDS TO 25 KT. SEAS TO 
2.5 M. 
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 59N151W 1012 MB MOVING NE 10 KT THEN TURNING SE 15 KT AFTER 
24 HOURS. N OF 57N BETWEEN 152W AND 155W WINDS TO 25 KT. SEAS 
LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 59N145W 1012 MB. FROM 55N TO 59N BETWEEN 
149W AND 156W WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW 57N138W 1015 MB. CONDITIONS DIMINISHED.

.48 HOUR FORECAST FROM 32N TO 40N BETWEEN 120W AND 127W AREA OF 
N TO NW WINDS TO 25 KT. SEAS TO 3 M. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM NW OF 
A LINE FROM 54N163W TO 51N170W TO 49N180W.
.24 HOUR FORECAST DENSE FOG W OF A LINE FROM 56N180W TO 54N169W 
TO 54N177W TO 50N179E AND WITHIN 240 NM W OF A LINE FROM 53N174W 
TO 44N177W. 
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 62N170W TO 57N159W 
TO 55N165W TO 44N177W.

.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 1800 UTC TUE AUG 25.
24 HOUR FORECAST VALID 1800 UTC WED AUG 26.
48 HOUR FORECAST VALID 1800 UTC THU AUG 27.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM ISELLE NEAR 21.0N 121.8W 994 MB AT 2100 UTC AUG
25 MOVING WNW OR 285 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM NE
QUADRANT...170 NM SE QUADRANT...60 NM SW QUADRANT...AND 120 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 210 NM NE QUADRANT...200
NM SE QUADRANT...120 NM SW QUADRANT...AND 180 NM NW QUADRANT 
WITH SEAS TO 8.5 M. ELSEWHERE WITHIN 24N119W TO 25N122W TO 
23N125W
 TO 20N124W TO 20N120W TO 19N117W TO 24N119W WINDS 20 TO 33 KT. 
SEAS 3.0 TO 4.5 M. REMAINDER OF AREA WITHIN 25N115W TO 28N116W 
TO 27N122W TO 24N126W TO 20N126W TO 15N117W TO 25N115W WINDS 20 
KT OR LESS. SEAS 2.5 TO 3.5 M IN SE TO S SWELL. 
.24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.8N 124.7W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM NE QUADRANT...60 NM SE QUADRANT...20 NM SW 
QUADRANT...AND 70 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 150 
NM N SEMICIRCLE...0 NM N SEMICIRCLE WITH SEAS TO 6.0 M. ELSEWHERE
WITHIN 25N123W TO 25N126W TO 24N127W TO 22N127W TO 21N124W TO 
22N122W TO 25N123W WINDS 20 TO 33 KT. SEAS 3.0 TO 5.0 M. 
REMAINDER OF AREA WITHIN 26N120W TO 27N125W TO 25N130W TO 20N130W
TO 19N126W TO 20N120W TO 26N120W WINDS 20 KT OR LESS. SEAS 2.5 
TO 3.5 M IN E TO SE SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 22.4N 
126.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 4.5 M.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 23.0N 
128.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 24N128W
TO 26N131W TO 24N131W TO 23N131W TO 24N130W TO 23N128W TO 
24N128W WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 
27N127W TO 27N129W TO 26N132W TO 22N132W TO 22N129W TO 24N126W TO
27N127W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E TO SE 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...
.REMNANTS OF JULIO NEAR 21.0N 119.5W 1003 MB AT 2100 UTC AUG 25
MOVING N OR 350 DEG AT 22 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. GALE FORCE WINDS WITHIN 0 NM W SEMICIRCLE...80 NM 
NE QUADRANT AND 60 NM SE QUADRANT. SEAS 4 M OR GREATER WITHIN 0 
NM W SEMICIRCLE...90 NM NE QUADRANT AND 120 NM SE QUADRANT WITH 
SEAS TO 4.5 M.
.06 HOUR FORECAST REMNANTS OF JULIO AND ASSOCIATED CONDITIONS TO
BECOME ABSORBED INTO EASTERN SEMICIRCLE OF ISELLE.
.12 HOUR FORECAST DISSIPATED JULIO NEAR 22.5N 121.0W. 

.SYNOPSIS AND FORECAST.

.WITHIN 11N86W TO 11N87W TO 11N88W TO 10N88W TO 10N87W TO
11N86W...INCLUDING THE GULF OF PAPAGAYO... NE TO E WINDS 20 TO
25 KT. SEAS TO 2.5 M.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST FROM 10.5N TO 12N E OF 88W W WINDS 20 TO 25 KT.
SEAS LESS THAN 2.5 M.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF TEHUANTEPEC N OF 14.5N N WINDS 20 TO 25 KT. SEAS TO 2.5 
M.
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N N WINDS 20 TO 25 
KT. SEAS LESS THAN 2.5 M. 
.48 HOUR FORECAST LITTLE CHANGE.

.18 HOUR FORECAST WITHIN 00N126W TO 00N127W TO 00N127W TO 
03.4S120W TO 03.4S119W TO 03S120W TO 00N126W WINDS 20 KT OR LESS.
SEAS 2.5 M IN S TO SW SWELL. 
.24 HOUR FORECAST WITHIN 01S119W TO 01N126W TO 00N130W TO 
03.4S120W TO 03.4S118W TO 03S119W TO 01S119W WINDS 20 KT OR LESS.
SEAS 2.5 M IN S TO SW SWELL. 
.48 HOUR FORECAST WITHIN 01N107W TO 00N110W TO 03N114W TO 
01S111W TO 03.4S111W TO 03S108W TO 01N107W WINDS 20 KT OR LESS. 
SEAS 2.5 M IN S TO SW SWELL.

.27 HOUR FORECAST LOW PRES NEAR 09N109.5W 1005 MB. WITHIN 
13N106W TO 14N108W TO 13N108W TO 12N108W TO 12N107W TO 12N106W TO
13N106W E TO SE WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M. WITHIN 
09N107W TO 09N108W TO 08N108W TO 07N110W TO 07N109W TO 08N107W TO
09N107W S TO SW WINDS 20 TO 25 KT. SEAS 2.5 M IN S TO SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 11N112W 1003 MB. WITHIN 12N108W 
TO 14N109W TO 16N112W TO 14N114W TO 07N113W TO 07N110W TO 12N108W
WINDS 20 TO 25 KT. SEAS 3.0 TO 4.0 M IN S TO SW SWELL. ELSEWHERE
WITHIN 10N106W TO 15N110W TO 14N114W TO 10N112W TO 04N112W TO 
03N107W TO 10N106W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN S TO
SW SWELL.

.39 HOUR FORECAST WITHIN 11N131W TO 11N132W TO 10N133W TO
09N132W TO 09N131W TO 11N131W SW WINDS 20 TO 25 KT. SEAS 2.5 M 
IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 12N131W TO 11N131W TO 10N132W TO 
09N132W TO 10N131W TO 10N130W TO 12N131W SW WINDS 20 TO 25 KT. 
SEAS 2.5 TO 3.0 M IN S TO SW SWELL. ELSEWHERE WITHIN 12N129W TO 
13N130W TO 12N131W TO 09N132W TO 09N131W TO 11N129W TO 12N129W SW
WINDS 20 KT OR LESS. SEAS 2.5 M IN S TO SW SWELL.

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

CONVECTION VALID AT 2100 UTC TUE AUG 25...

.TROPICAL STORM ISELLE...NUMEROUS MODERATE ISOLATED STRONG 
CONVECTION FROM 21.5N TO 24.5N BETWEEN 119W AND 122W AND 
SCATTERED
MODERATE ELSEWHERE FROM 20N TO 25N BETWEEN 118W AND 122W.

.REMNANTS OF JULIO...NUMEROUS MODERATE ISOLATED STRONG IN A 
NARROW BAND FROM 13N TO 20.5N BETWEEN 117.5W AND 122W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N75W TO 08.5N97W TO 08.5N102W TO 13N112W 
THEN RESUMES SW OF JULIO FROM 14N121W TO LOW PRES NEAR 10N140W 
1008 MB. SCATTERED TO NUMEROUS MODERATE TO STRONG CONVECTION 
FROM 03.5N TO 08.5N E OF 91W AND FROM 06N TO 13N BETWEEN 90W AND 
99W. SCATTERED TO NUMEROUS MODERATE ISOLATED STRONG CONVECTION 
FROM 05N TO 15.5N BETWEEN 99W AND 112W. SCATTERED TO LOCALLY 
NUMEROUS MODERATE ISOLATED STRONG CONVECTION FROM 07N TO 12N 
BETWEEN 120W AND 128W AND FROM 03.5N TO 12N BETWEEN 128W AND 
143W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W

SYNOPSIS VALID 1800 UTC AUG 25 2026.
24 HOUR FORECAST VALID 1800 UTC AUG 26 2026.
48 HOUR FORECAST VALID 1800 UTC AUG 27 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST

.LOW 10N140W 1008 MB MOVING W 5 KT. ISOLATED MODERATE TSTMS WITHIN
120 NM OF CENTER.
.24 HOUR FORECAST LOW 10N143W 1010 MB.
.48 HOUR FORECAST LOW 10N147W 1009 MB.

.LOW 16N166W 1008 MB MOVING NW 15 KT.
.24 HOUR FORECAST LOW 17N172W 1010 MB. TROUGH FROM LOW TO 12N170W.
.48 HOUR FORECAST LOW WEAKENING TO TROUGH 15N177W 10N175W.

.TROUGH 30N150W 26N154W 25N156W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH 30N178W 28N180W.
.48 HOUR FORECAST TROUGH NEAR 30N180W 26N178W.

.WINDS 20 KT OR LESS OVER THE REMAINDER OF FORECAST AREA.

.SEAS 2.5 M OR LESS OVER THE REMAINDER OF FORECAST AREA.

.MONSOON TROUGH 05N177W 10N165W 10N140W. SCATTERED MODERATE TSTMS
FROM 02N TO 10N BETWEEN 165W AND 155W...AND FROM 02N TO 08N E OF
145W.

$$

.FORECASTER PECHACEK. HONOLULU HI.