226
FZPN02 KWBC 212325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC THU AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 21.
24 HOUR FORECAST VALID 1800 UTC AUG 22.
48 HOUR FORECAST VALID 1800 UTC AUG 23.

.WARNINGS.

...GALE WARNING...
.LOW 49N160E 991 MB MOVING NE 30 KT. WITHIN 180 NM S SEMICIRCLE
WINDS 35 TO 45 KT. SEAS TO 3.5 TO 4.5 M. ALSO FROM 45N TO 52N
BETWEEN 167E AND 160E WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE
FROM 40N TO 53N W OF 173E WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW NW OF AREA 59N169E 990 MB. WITHIN 240 NM SE
QUADRANT WINDS 25 TO 35 KT. SEAS 3 TO 5 M. ELSEWHERE N OF 50N W
OF 175W AND WITHIN 300 NM E OF A LINE FROM 50N170E TO 40N162E
WINDS 20 TO 30 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW WELL NW OF AREA. WITHIN 300 NM E AND SE OF
A LINE FROM 66N167W TO 57N180W TO 44N168E WINDS 20 TO 30 KT. SEAS
TO 3.5 M.

.SYNOPSIS AND FORECAST.

.LOW 50N147W 1005 MB MOVING NE 10 KT. WITHIN 300 NM S AND SW
QUADRANTS AND BETWEEN 180 NM AND 540 NM N SEMICIRCLE WINDS 20 TO
30 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 52N144W 1009 MB. BETWEEN 180 NM AND 480 NM
N AND NW SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 51N147W 1014 MB. WITHIN 360 NM W QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.

.FROM 33N TO 44N BETWEEN 121W AND 128W WINDS 20 TO 30 KT. SEAS TO
2.5 M.
.24 HOUR FORECAST FROM 38N TO 46N BETWEEN 124W AND 128W WINDS TO
25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST FROM 42N TO 51N BETWEEN 126W AND 130W WINDS TO
25 KT. SEAS TO 2.5 M.

.N OF 62N BETWEEN ALASKA AND 167W WINDS TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 57N
BETWEEN 170W AND 160E AND FROM 51N TO 54N BETWEEN 138W AND 149W.
.24 HOUR FORECAST DENSE FOG WITHIN 240 NM EITHER SIDE OF A LINE
FROM 60N178W TO 47N168W AND WITHIN 240 NM EITHER SIDE OF A LINE
FROM 52N180W TO 48N170E TO 41N160E.
.48 HOUR FORECAST DENSE FOG FROM 52N TO 61N BETWEEN 167W AND 178W
AND WITHIN 180 NM EITHER SIDE OF A LINE FROM 57N180W TO 41N165E.

.FORECASTER COLLINS. 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 1800 UTC THU AUG 21.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 22.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 01S109W TO 01S120W TO 03.4S120W TO 03.4S107W TO 01S109W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE SWELL.
.24 HOUR FORECAST WITHIN 01S104W TO 00N111W TO 01S120W TO
03.4S120W TO 03S101W TO 01S104W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST WITHIN 02S83W TO 01S96W TO 00N120W TO
03.4S120W TO 03.4S81W TO 02S83W...INCLUDING THE GULF OF
GUAYAQUIL AND EXCEPT LEE OF GALAPAGOS ISLANDS... WINDS 20 KT OR
LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.

.WITHIN 18N136W TO 19N137W TO 19N140W TO 14N140W TO 15N139W TO
16N133W TO 18N136W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
TO E SWELL.
.24 HOUR FORECAST WITHIN 17N135W TO 19N138W TO 19N140W TO
14N140W TO 14N135W TO 17N135W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NE TO E SWELL.
.48 HOUR FORECAST WITHIN 14N139W TO 15N139W TO 16N140W TO
13N140W TO 13N139W TO 14N139W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN NE TO E SWELL.

.WITHIN 11N107W TO 11N112W TO 09N114W TO 07N114W TO 07N110W TO
08N109W TO 11N107W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
SWELL.
.24 HOUR FORECAST WITHIN 05N94W TO 06N96W TO 07N103W TO 03N100W
TO 02N97W TO 02N93W TO 05N94W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN S SWELL.
.48 HOUR FORECAST WITHIN 06N84W TO 09N113W TO 06N124W TO 04N108W
TO 04N84W TO 06N84W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
SWELL.

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

CONVECTION VALID AT 1930 UTC THU AUG 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N85W TO 13N111W TO 12N140W. SCATTERED
MODERATE ISOLATED STRONG FROM 05N TO 11N BETWEEN 78W AND
90W...AND FROM 07N TO 14N BETWEEN 92W AND 101W. SCATTERED
MODERATE FROM 08N TO 25N BETWEEN 100W AND 140W.

.FORECASTER AL. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1800 UTC AUG 21 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 22 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 23 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N173E 26N173E MOVING NW SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 30N177E 27N177E 23N178E MOVING NW 10 KT. ISOLATED
MODERATE TSTMS WITHIN 270 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N173E 25N169E.
.48 HOUR FORECAST TROUGH 30N168E 26N165E.

.TROUGH 29N170W 27N171W 25N171W MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS 120 NM W OF TROUGH AND 210 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 22N163E 18N161E NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 TO 25 KT FROM 16N TO 11N BETWEEN 174W AND 162W...AND
FROM 19N TO 13N E OF 153W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 18N TO 13N E OF 157W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 19N TO 14N E BETWEEN 153W
AND 144W.

.SEAS 2.5 TO 3 M FROM 16N TO 11N BETWEEN 173W AND 163W...AND FROM
18N TO 14N E OF 154W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 17N TO 11N BETWEEN 179W AND
170W...AND FROM 20N TO 13N E OF 158W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 17N AND 13N BETWEEN 173E
AND 179W...AND FROM 21N TO 13N BETWEEN 162W AND 141W.

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

.MONSOON TROUGH 12N140W 12N147W THENCE ITCZ 10N156W 10N169W
05N171E 07N160E. ISOLATED MODERATE TSTMS WITHIN 210 NM OF TROUGH
AND ITCZ BETWEEN 167E AND 179E...BETWEEN 171W AND 157W...AND E OF
152W.

.ISOLATED MODERATE TSTMS FROM 27N TO 22N W OF 163E.

$$

.FORECASTER PIERCE. HONOLULU HI.