National Weather Service Marine Forecast FZPN40 PHFO

FZPN40 PHFO 211513
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN JUN 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUN 21 2026. 24 HOUR FORECAST VALID 1200 UTC JUN 22 2026. 48 HOUR FORECAST VALID 1200 UTC JUN 23 2026.

.WARNINGS.

.NONE. .SYNOPSIS AND FORECAST.

.TROUGH 26N171W 22N174W MOVING W 10 KT. .24 HOUR FORECAST TROUGH 26N176W 21N180W. .48 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH 30N157W 23N167W 17N173W NEARLY STATIONARY . .24 HOUR FORECAST TROUGH 30N156W 22N165W. .48 HOUR FORECAST TROUGH 30N160W 22N167W.

.TROUGH 21N144W 14N146W MOVING W 10 KT. .24 HOUR FORECAST TROUGH 21N150W 13N149W. .48 HOUR FORECAST TROUGH 21N153W 14N154W.

ITCZ 06N140W 05N155W 03N162W
SCATTERED MODERATE TSTMS WITHIN 300 NM OF ITCZ.

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

.FORECASTER VAUGHAN. HONOLULU HI.