National Weather Service Marine Forecast FZPN40 PHFO

FZPN40 PHFO 292201
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC FRI MAY 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 29 2026. 24 HOUR FORECAST VALID 1800 UTC MAY 30 2026. 48 HOUR FORECAST VALID 1800 UTC MAY 31 2026.

.WARNINGS.

.NONE. .SYNOPSIS AND FORECAST.

.TROUGH 18N143W 11N143W 04N145W MOVING W 10 KT. ISOLATED MODERATE TSTMS FROM 07N TO 03N BETWEEN 148W AND 144W...AND FROM 13N TO 10N E OF 142W. .24 HOUR FORECAST TROUGH 18N149W 12N148W 09N150W. .48 HOUR FORECAST TROUGH 22N152W 12N152W.

.TROUGH 10N171W 05N180W MOVING NW SLOWLY. LOW JUST W OF AREA. ISOLATED MODERATE TO STRONG TSTMS S OF 11N W OF 170W. .24 HOUR FORECAST LOW NEAR 06N176W 1008 MB. TROUGH FROM 11N173W TO LOW TO 05N180W. .48 HOUR FORECAST LOW DISSIPATED. TROUGH 13N174W 08N180W.

.48 HOUR FORECAST NEW TROUGH 30N158W 27N161W.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

SEAS 2.5 TO 3 M W OF LINE 30N161W 18N170W 16N180W
FROM 26N TO 12N E OF 150W...AND FROM 15N TO 06N W OF 150W. .24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 25N TO 18N W OF 173W...AND FROM 22N TO 10N E OF 152W. .48 HOUR FORECAST SEAS LOWERED TO 2.5 M OR LOWER.

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

ITCZ 05N140W 06N141W
AND 05N151W 05N159W 06N167W. SCATTERED MODERATE TSTMS S OF 10N BETWEEN 170W AND 150W.

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.FORECASTER TROTTER. HONOLULU HI.