The High Seas Forecast for the Central North Pacific

High Seas Forecast Issued: 09/13/2026 12:31:11 AM UTC
                        
349
FZPN40 PHFO 121431
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 12 2026.
24 HOUR FORECAST VALID 1200 UTC SEP 13 2026.
48 HOUR FORECAST VALID 1200 UTC SEP 14 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N170W 27N171W THENCE TROUGH 22N175W. FRONT MOVING E SLOWLY
AND TROUGH NEARLY STATIONARY. WINDS 20 TO 25 KT WITHIN 210 NM E OF
FRONT.
.24 HOUR FORECAST FRONT 30N170W 27N172W THENCE TROUGH 22N178W.
WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT WEAKENING TO TROUGH 30N172W 23N177W.

.TROUGH 30N151W 27N152W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 30N151W 27N153W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N141W 23N147W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 30N142W 24N147W.
.48 HOUR FORECAST TROUGH 30N146W 26N147W 22N149W.

.TROUGH 20N163W 18N163W 16N163W MOVING W SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 240 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW LOW 12N148W 1007 MB.
.48 HOUR FORECAST LOW 12N147W 1008 MB.

.48 HOUR FORECAST NEW FRONT 30N175W 26N180W.

.WINDS 20 KT OR LOWER REMAINDER OF FORECAST AREA.

.SEAS 2.5 TO 3 M N OF 29N W OF 167W.
.24 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LESS.

.SEAS 2.5 M OR LESS REMAINDER OF FORECAST AREA.

.MONSOON TROUGH 13N140W 15N146W 10N155W 10N165W 07N180W. ISOLATED
MODERATE TO STRONG TSTMS BETWEEN TROUGH AND 03N...AND WITHIN 150 NM
N OF TROUGH E OF 170W.

$$

.FORECASTER WROE. HONOLULU HI.