948
FZPN40 PHFO 220313
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 22 2025.
24 HOUR FORECAST VALID 0000 UTC AUG 23 2025.
48 HOUR FORECAST VALID 0000 UTC AUG 24 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N176E 27N174E 25N172E MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS N OF 24N BETWEEN 175W.
.24 HOUR FORECAST TROUGH 30N172E 26N169E.
.48 HOUR FORECAST TROUGH 30N166E 27N163E.

.TROUGH 29N170W 28N172W 25N173W MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS N OF 25N BETWEEN TROUGH AND 167W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 TO 25 KT FROM 16N TO 12N BETWEEN 176W AND 165W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 13N E OF 158W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 14N E BETWEEN
152W AND 144W.

.SEAS 2.5 TO 3 M FROM 16N TO 10N BETWEEN 175W AND 164W...AND FROM
18N TO 13N E OF 155W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 16N TO 11N BETWEEN 178E
AND 174W...AND FROM 19N TO 12N E OF 159W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 21N TO 13N BETWEEN 164W
AND 141W.

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

.MONSOON TROUGH 12N140W 12N150W THENCE ITCZ 11N160W 10N175W
08N170E 07N166E. ISOLATED MODERATE TSTMS WITHIN 270 NM OF TROUGH
AND ITCZ.

.ISOLATED MODERATE TSTMS FROM 27N TO 21N W OF 165E.


$$

.FORECASTER PIERCE. HONOLULU HI.