971
FZPN40 PHFO 221526
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC AUG 22 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 23 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 24 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N174E 27N174E 25N172E MOVING NW SLOWLY. SCATTERED
MODERATE TSTMS WITHIN 300 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N169E 23N165E.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.

.TROUGH 29N174W 26N176W MOVING NW SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 180 NM EITHER SIDE OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW TROUGH 26N169E 23N169E.

.WINDS 20 TO 30 KT FROM 12N TO 20N W OF 159W... AND FROM 10N TO
16N BETWEEN 170W AND 175E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 20N E OF
162W...AND FROM 11N TO 16N BETWEEN 177W AND 176E.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 11N TO 17N BETWEEN 144W
AND 164W.

.SEAS 2.5 TO 3 M FROM 11N TO 19N E OF 155W...AND FROM 10N TO 16N
BETWEEN 164W AND 177W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 12N TO 19N E OF 160W... AND
FROM 12N TO 16N BETWEEN 180W AND 175E.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 12N TO 19N BETWEEN 143W
AND 154W.

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

.MONSOON TROUGH 12N140W 12N148W THENCE ITCZ 08N163W 11N172W
08N173E 08N160E. ISOLATED STRONG TSTMS WITHIN 180 NM N OF ITCZ
BETWEEN 170W AND 180W. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN
180 NM EITHER SIDE OF ITCZ AND MONSOON TROUGH.

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


$$

.FORECASTER ALMANZA. HONOLULU HI.