High Seas Forecast
Issued by NWS

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751
FZPN40 PHFO 041517
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT OCT 04 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 04 2025.
24 HOUR FORECAST VALID 1200 UTC OCT 05 2025.
48 HOUR FORECAST VALID 1200 UTC OCT 06 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N158W 27N164W 26N173W MOVING E SLOWLY. TROUGH 28N159W
24N161W NEARLY STATIONARY. ISOLATED MODERATE TSTMS WITHIN 180 NM
E OF FRONT N OF 27N. SEAS 2.5 TO 3 M N OF FRONT.
.24 HOUR FORECAST FRONT MERGED WITH TROUGH. FRONT 30N154W 28N156W
THENCE TROUGH 26N157W. SEAS SUBSIDED TO 8 FT OR LESS.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N157W 27N155W
26N154W.

.12 HOUR FORECAST NEW TROUGH 25N140W 18N141W.
.24 HOUR FORECAST TROUGH 25N141W 23N143W 18N144W.
.48 HOUR FORECAST TROUGH 26N143W 23N146W 18N148W.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

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

.ITCZ 09N140W 10N165W 03N164E. SCATTERED MODERATE TSTMS WITHIN
180 NM OF ITCZ BETWEEN 153W AND 174E.

.SCATTERED MODERATE TSTMS FROM 09N TO 21N W OF 170E.


$$

.FORECASTER ALMANZA. HONOLULU HI.