093
FZPN40 PHFO 291512
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI AUG 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 29 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 30 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 31 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 15N149W 12N150W 11N152W MOVING NW 10 KT. WINDS 20 TO 25
KT WITHIN 60 NM 3 OF TROUGH. SEAS 2.5 TO 3 M FROM 17N TO 12N
BETWEEN 152W AND 146W. ISOLATED MODERATE TSTMS FROM 12N TO 09N
BETWEEN 152W AND 149W.
.24 HOUR FORECAST TROUGH 16N153W 12N154W 11N155W. WINDS 20 TO 25
KT FROM 16N TO 12N BETWEEN 154W AND 152W. SEAS 2.5 TO 3 M FROM 17N
TO 14N BETWEEN 155W AND 150W.
.48 HOUR FORECAST TROUGH 16N156W 11N157W. WINDS EASED 20 KT OR
LESS. SEAS LOWERED TO 2.5 M OR LESS.

.TROUGH 15N166W 11N168W MOVING NW 10 KT. SEAS 2.5 TO 3 M FROM 15N
TO 14N BETWEEN 168W AND 165W. ISOLATED MODERATE TSTMS WITHIN 120
NM OF TROUGH.
.24 HOUR FORECAST TROUGH 16N171W 11N172W.
.48 HOUR FORECAST TROUGH 16N174W 10N175W.

.TROUGH 30N159W 28N163W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH 30N154W 29N156W.
.48 HOUR FORECAST TROUGH ABSORBED BY FRONT DESCRIBED BELOW.

.48 HOUR FORECAST NEW FRONT 30N151W 29N156W 30N166W.

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

.ITCZ 11N140W 11N144W 12N149W...11N154W 11N160W 14N165W...12N168W
09N173W 08N170E 08N160E. ISOLATED MODERATE TSTMS WITHIN 300 NM
BETWEEN 175E AND 168W...AND WITHIN 120 NM ELSEWHERE.

.ISOLATED MODERATE TSTMS FROM 25N TO 23N BETWEEN 163E AND 166E.

$$

.FORECASTER PIERCE. HONOLULU HI.