905
FZPN02 KWBC 181725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC MON AUG 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC AUG 18.
24 HOUR FORECAST VALID 1200 UTC AUG 19.
48 HOUR FORECAST VALID 1200 UTC AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 50N131W 1009 MB MOVING N 10 KT. BETWEEN 120 NM AND 240 NM E
QUADRANT WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW 53N134W 1012 MB. WITHIN 180 NM E QUADRANT
WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW NW OF AREA 54N160E 1002 MB MOVING NE 15 KT. N OF 44N W OF
169E WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LOW NW OF AREA 59N165E 1002 MB. N OF 52N
BETWEEN 171E AND 176E WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW NW OF AREA 65N176E 1002 MB. N OF 59N
BETWEEN 172W AND 178W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.

.FROM 32N TO 37N BETWEEN 119W AND 123W WINDS TO 25 KT. SEAS TO
2.5 M.
.24 HOUR FORECAST FROM 32N TO 36N BETWEEN 119W AND 122W WINDS TO
25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST BETWEEN 117W AND A LINE FROM 40N126W TO
30N122W WINDS 20 TO 30 KT. SEAS TO 3 M.

.24 HOUR FORECAST LOW 51N158W 1007 MB. FROM 48N TO 53N BETWEEN
158W AND 166W WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 50N147W 1008 MB. FROM 44N TO 52N BETWEEN
140W AND 147W WINDS TO 25 KT. SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THA N 1 NM FROM 46N TO 55N
BETWEEN 158W AND 178W...AND N OF 43N W OF 166E.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 50N BETWEEN 149W AND
160W...AND WITHIN 180 NM E OF A LINE FROM 55N169E TO 50N170E TO
43N167E.
.48 HOUR FORECAST DENSE FOG WITHIN 120 NM SE OF A LINE FROM
55N180W TO 49N175E TO 45N166E.

.FORECASTER SHAW. 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 AUG 18.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 19.
48 HOUR FORECAST VALID 1200 UTC WED AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 00N98W TO 00N105W TO 02S120W TO 03.4S120W TO 03.4S93W TO
00N98W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.24 HOUR FORECAST WITHIN 01S100W TO 01S106W TO 02S118W TO
03.4S120W TO 03.4S94W TO 01S100W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST WITHIN 01S102W TO 01S120W TO 03.4S120W TO
03.4S95W TO 01S102W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SE
TO S SWELL.

.06 HOUR FORECAST WITHIN 06N108W TO 07N110W TO 07N112W TO
04N113W TO 03N111W TO 04N108W TO 06N108W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 08N111W TO 07N115W TO 06N117W TO
05N117W TO 04N114W TO 06N110W TO 08N111W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN SE TO S SWELL.
.48 HOUR FORECAST WITHIN 07N119W TO 09N120W TO 07N125W TO
06N126W TO 05N124W TO 05N122W TO 07N119W 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 1430 UTC MON AUG 18...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 11N93W TO 10N106W TO 12N125W TO
11N140W. SCATTERED MODERATE ISOLATED STRONG FROM 05N TO 14N
BETWEEN 85W AND 94W...FROM 08N TO 13N BETWEEN 97W AND
110W...FROM 05N TO 14N BETWEEN 120W AND 126W...AND FROM 10N TO
14N BETWEEN 130W AND 140W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI

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

SYNOPSIS VALID 1200 UTC AUG 18 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 19 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 20 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N167W 26N171N NEARLY STATIONARY. SCATTERED MODERATE
TSTMS N OF 25N BETWEEN 171W AND 164W.
.24 HOUR FORECAST TROUGH 30N172W 26N173W.
.48 HOUR FORECAST TROUGH 30N174W 26N174W.

.TROUGH 30N174E 26N173E MOVING W 10 KT. SCATTERED MODERATE TSTMS
FROM 25N TO 27N BETWEEN 171E AND 176E.
.24 HOUR FORECAST TROUGH 30N168E 26N165E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 26N157W 22N156W MOVING W 20 KT.
.24 HOUR FORECAST TROUGH 25N163W 22N162W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH 11N155W 05N158W. WINDS 20 TO 25 KT
WITHIN 60 NM OF TROUGH N OF 09N.
.48 HOUR FORECAST TROUGH 12N162W 07N163W. WINDS 20 TO 25 KT WITHIN
90 NM OF TROUGH N OF 10N.

.SEAS 2.5 TO 3 M FROM 10N TO 14N BETWEEN 155W AND 150W.
.24 HOUR FORECAST SEAS DIMINISHED TO 2.5 M OR LESS.
.48 HOUR FORECAST SEAS 2.5 M TO 3 M FROM 10N TO 15N BETWEEN 163W
AND
158W.

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

.ITCZ 10N140W 10N165W 05N177E. ISOLATED MODERATE TSTMS WITHIN 210
NM
OF ITCZ..ISOLATED MODERATE TSTMS FROM 04N TO 08N W OF 165E.

.SCATTERED MODERATE TSTMS N OF 25N BETWEEN 163E AND 168E... AND
FROM 02N TO 07N BETWEEN 170E AND 177E. ISOLATED MODERATE TSTMS
FROM 03N TO 10N W OF 164E... AND FROM 20N TO 24N W OF 163E.

$$

.FORECASTER SHIGESATO. HONOLULU HI.