371
FZPN02 KWBC 190525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC TUE AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 19.
24 HOUR FORECAST VALID 0000 UTC AUG 20.
48 HOUR FORECAST VALID 0000 UTC AUG 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 51N133W 1009 MB DRIFTING N 05 KT. NE OF A LINE FROM 48N127W
TO 54N134W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 54N134W 1016 MB. CONDITIONS DIMINISHED.

.FROM 33N TO 38N E OF 123W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 120 NM OF CALIFORNIA COAST FROM 32N TO
41N WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST S OF 45N BETWEEN 118W AND 126W WINDS 20 TO 30
KT. SEAS TO 2.5 M.

.LOW 51N165E 1005 MB MOVING N 20 KT. N OF 50N BETWEEN 173E AND
166E WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW NW OF AREA 60N170E 1003 MB. N OF 56N
BETWEEN 177W AND 176E WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW NW OF AREA 64N178W 1004 MB. N OF 59N W OF
ALASKA WINDS TO 25 KT. SEAS LESS THAN 2.5 M.

.LOW 53N162W 1006 MB MOVING SE 15 KT. FROM 46N TO 50N BETWEEN
158W AND 166W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 50N153W 1008 MB. FROM 46N TO 50N BETWEEN
143W AND 148W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW 52N147W 1006 MB. WITHIN 120 NM E AND N OF
A LINE FROM 47N142W TO 52N141W TO 53N144W TO LOW CENTER WINDS 20
TO 30 KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 54N
BETWEEN 154W AND 173W...AND N OF 44N BETWEEN 170E AND 163E.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM SE OF A LINE FROM
50N148W TO 47N153W...AND WITHIN 120 NM E AND SE OF A LINE FROM
57N175E TO 51N175E TO 44N165E...AND FROM 44N TO 49N BETWEEN 180W
AND 174E.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 54N BETWEEN 176W AND
165E...AND FROM 49N TO 53N BETWEEN 142W AND 144W.

.FORECASTER POCHE. 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 0000 UTC TUE AUG 19.
24 HOUR FORECAST VALID 0000 UTC WED AUG 20.
48 HOUR FORECAST VALID 0000 UTC THU AUG 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 01S99W TO 01S113W TO 03.4S119W TO 03S92W TO
01S99W...EXCEPT LEE OF GALAPAGOS ISLANDS... WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 00N109W TO 00N122W TO 03.4S120W TO
03.4S98W TO 00N109W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE
SWELL.

.WITHIN 06N108W TO 07N110W TO 06N114W TO 04N114W TO 03N112W TO
03N109W TO 06N108W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S
SWELL.
.24 HOUR FORECAST WITHIN 07N111W TO 06N114W TO 07N119W TO
05N122W TO 03N115W TO 03N113W TO 07N111W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST WITHIN 08N111W TO 08N131W TO 05N135W TO
03N115W TO 06N103W TO 08N111W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN SE TO S SWELL.

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

CONVECTION VALID AT 0240 UTC TUE AUG 19...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 MONSOON TROUGH FROM 10N85W TO 11N92W TO 12N120W TO 12N140W.
SCATTERED MODERATE AND ISOLATED STRONG FROM 10N TO 12N BETWEEN
85W AND 88W...FROM 10N TO 12N BETWEEN 100W AND 110W...FROM 17N
TO 20N BETWEEN 116W AND 119W...AND FROM 08N TO 11N BETWEEN 125W
AND 127W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 0000 UTC AUG 19 2025.
24 HOUR FORECAST VALID 0000 UTC AUG 20 2025.
48 HOUR FORECAST VALID 0000 UTC AUG 21 2025.

.WARNINGS.



.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N172W 28N172W 27N172W MOVING NW SLOWLY. SCATTERED
MODERATE TSTMS N OF 26N BETWEEN 165W AND 169W.
.24 HOUR FORECAST TROUGH 30N176W 29N179E 28N169E.
.48 HOUR FORECAST TROUGH 30N178W 28N176E 26N172E.

.TROUGH 28N174E 25N169E MOVING N 10 KT. ISOLATED MODERATE TSTMS
FROM 24N TO 28N BETWEEN 173E AND 170E.
.24 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 30N164E 28N164E MOVING NE SLOWLY. SCATTERED MODERATE TSTMS
N OF 25N BETWEEN 172E AND 164E.
.24 HOUR FORECAST TROUGH 30N162E 26N160E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH 12N159W 10N159W 09N160W. WINDS 20 TO
25 KT WITHIN 60 NM OF TROUGH N OF 10N.
.48 HOUR FORECAST TROUGH 13N164W 10N165W 05N167W. WINDS 20 TO 25
KT
WITHIN 90 NM OF TROUGH N OF 11N.

.SEAS 2.5 TO 3 M FROM 10N TO 13N BETWEEN 154W AND 158W.
.24 HOUR FORECAST SEAS DIMINISHED TO 2.5 M OR LESS.
.48 HOUR FORECAST SEAS 2.5 M TO 3 M FROM 10N TO 14N BETWEEN 161W
AND 168W.

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

.MONSOON TROUGH 12N140W 11N147W 10N151W 10N165W THENCE ITCZ
09N174W
07N180W 05N175E 04N170E. ISOLATED MODERATE TSTMS WITHIN 210 NM OF
TROUGH AND ITCZ..ISOLATED MODERATE TSTMS FROM 01N TO 08N W OF
165E.



$$

.FORECASTER TSAMOUS. HONOLULU HI.