The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 10/27/2026 01:08:38 AM UTC
                        
519
FZPN40 PHFO 261508
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC MON OCT 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 26 2026.
24 HOUR FORECAST VALID 1200 UTC OCT 27 2026.
48 HOUR FORECAST VALID 1200 UTC OCT 28 2026.

.WARNINGS.

.NONE.


.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION OLANA NEAR 13.9N 176.8W 1005 MB AT 1500 UTC
OCT 26 MOVING SE OR 140 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT. SEAS 2.5 TO 3 M WITHIN 60 NM N SEMICIRCLE...30 NM
SE QUADRANT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW OLANA NEAR 13.5N
176.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS SUBSIDED
TO 2.5 M OR LESS.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW OLANA NEAR 14.3N
174.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

.FRONT FROM 30N142W TO 23N146W THENCE TROUGH TO 18N151W TO
16N165W MOVING E SLOWLY. WINDS 20 TO 25 KT WITHIN 90 NM E OF
FRONT N OF 28N.
.24 HOUR FORECAST FRONT FROM 30N141W TO 26N141W THENCE TROUGH TO
22N150W TO 17N153W. WINDS FALLEN TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT FROM 30N140W TO 25N143W THENCE TROUGH TO
18N150W TO 19N160W.

.TROUGH FROM FROM 30N145W TO 28150W TO 30N160W MOVING SSE SLOWLY.
.24 HOUR FORECAST TROUGH FROM 30N144W TO 27150W TO 27N160W.
.48 HOUR FORECAST TROUGH FROM 30N144W TO 26N149W TO 28N159W.

.TROUGH FROM 10N149W TO 06N154W MOVING W SLOWLY.
.24 HOUR FORECAST FROM 10N151W TO 04N155W.
.48 HOUR FORECAST TROUGH FROM 11N150W TO 03N156W.

.TROUGH FROM 04N140W TO 01N145W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH FROM 05N144W TO 01N149W.
.48 HOUR FORECAST TROUGH DISSIPATED.

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

.SEAS 2.5 TO 3 M N OF 27N E OF 174W...AND N OF 17N W OF 174W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 27N E OF 162W.
.48 HOUR FORECAST SEAS SUBSIDED TO 2.5 M OF LOWER.

.OTHERWISE...SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.

.SCATTERED MODERATE TSTMS S OF A LINE FROM 08N152W TO 04N140W.
ISOLATED MODERATE TSTMS WITHIN 90 NM OF A LINE FROM 17N162W TO
10N166W.

.MONSOON TROUGH FROM 11N176W TO 11N180W.



$$

.FORECASTER BLOOD. HONOLULU HI.