493
FZPN40 PHFO 222220
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU MAY 22 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 160E

SYNOPSIS VALID 1800 UTC MAY 22 2025.
24 HOUR FORECAST VALID 1800 UTC MAY 23 2025.
48 HOUR FORECAST VALID 1800 UTC MAY 24 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 22N169E 1009 MB. TROUGH FROM 30N171E TO 24N171E TO
LOW TO 17N166E. LOW AND TROUGH MOVING NW 10 KT. SE WINDS 20 TO
25 KT N OF LINE 30N177E 27N178E 30N173E. SEAS 2.5 TO 4 M N OF
LINE 30N176W 25N168W 22N168W 21N179E 30N173E. ISOLATED MODERATE
TSTMS FROM 28N TO 26N BETWEEN 171E AND 173E.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 30N166E 24N166E 18N162E.
WINDS EASED TO 20 KT OR LESS. SEAS 2.5 TO 3 M N OF LINE 30N179W
22N174W 30N169E.
.48 HOUR FORECAST TROUGH 30N164E 19N160E. SEAS DIMINISHED TO 2.5
M OR LOWER.

.TROUGH 18N175E 13N173E 10N168E MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS FROM 16N TO 12N BETWEEN 172E AND 179E.
.24 HOUR FORECAST TROUGH ABSORBED BY TROUGH DESCRIBED ABOVE.

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

.SEAS 2.5 TO 3 M FROM 12N TO 06N E OF 150W.
.24 HOUR FORECAST SEAS DIMINISHED TO 2.5 M OR LOWER.

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

.ITCZ 07N140W 03N179E. ISOLATED MODERATE TSTMS WITHIN 150 NM OF
ITCZ E OF 145W AND W OF 176W.

$$

.FORECASTER TROTTER. HONOLULU HI.