The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 10/13/2026 01:20:58 AM UTC
                        
681
FZPN40 PHFO 121520
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC MON OCT 12 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

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

SYNOPSIS VALID 1200 UTC OCT 12 2026.
24 HOUR FORECAST VALID 1200 UTC OCT 13 2026.
48 HOUR FORECAST VALID 1200 UTC OCT 14 2026.

.WARNINGS.



.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 27N151W TO 20N143W TO 20N140W MOVING SLOWLY S.
.24 HOUR FORECAST WEAK TROUGH FROM 26N153W TO 18N156W TO 16N140W.
.36 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 28N165W 1014 MB AND TROUGH FROM LOW TO 30N163W AND FROM
LOW TO 24N167W...BOTH SLOWLY MOVING E.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 30N161W TO 26N164W.
.48 HOUR FORECAST TROUGH ABSORBED BY NEW FRONT MENTIONED BELOW.

.48 HOUR FORECAST NEW FRONT FROM 30N162W TO 27N170W.

.TROUGH 24N155W TO 21N155W TO 20N153W MOVING SLOWLY SW.
.24 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 09N174W 1008 MB MOVING NW 10 KT.
.24 HOUR FORECAST LOW 11N178W.
.48 HOUR FORECAST WEAKENED LOW MOVED W OF AREA.

.TROUGH FROM 11N145W TO 07N147W MOVING W SLOWLY. ISOLATED TSTMS E
OF TROUGH FROM 05N TO 11N.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 09N155W TO 06N155W MOVING W SLOWLY. ISOLATED TSTMS
WITHIN 270 NM NW OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 09N161W TO 06N163W.
.48 HOUR FORECAST TROUGH FROM 09N166W TO 07N168W.

.SEAS 2.5 TO 3 M W OF A LINE FROM 30N168W TO 26N180W.
.24 HOUR FORECAST SEAS 2.5 N OF 279N BETWEEN 166W AND 176321W.
.48 HOUR FORECAST SEAS SUBSIDED TO 2.5 M OR BELOW.

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

.SCATTERED MODERATE TSTMS WITHIN 120 NM OF A LINE FROM 15N172W TO
09N180W...AND S OF A LINE FROM 03N150W TO 06N180W.

.MONSOON TROUGH FROM LOW NEAR 09N174W TO 07N180W.


$$

.FORECASTER BLOOD. HONOLULU HI.