836
FZPS40 PHFO 012303
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC MON SEP 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1800 UTC SEP 01 2025.
24 HOUR FORECAST VALID 1800 UTC SEP 02 2025.
48 HOUR FORECAST VALID 1800 UTC SEP 03 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 25S125W 22S130W THENCE TROUGH 19S140W 15S160W. FRONT
AND TROUGH MOVING SE 25 KT S OF 20S AND ELSEWHERE NEARLY
STATIONARY.
.24 HOUR FORECAST TROUGH 25S120W 22S130W 18S140W.
.48 HOUR FORECAST TROUGH 25S120W 21S130W 20S135W.

.TROUGH 25S160W 22S170W 21S176W MOVING E 30 KT.
.24 HOUR FORECAST TROUGH 25S140W 22S150W.
.48 HOUR FORECAST TROUGH MERGES WITH TROUGH MENTIONED ABOVE.

.TROUGH 15S175E 12S160E NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 16S169E 15S167E 12S160E.
.48 HOUR FORECAST TROUGH 20S169E 16S168E.

.48 HOUR FORECAST WINDS INCREASING TO 20 TO 25 KT FROM 20S
TO 10S BETWEEN 170E AND 175W.

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

.SEAS 2.5 TO 4 M S OF LINE 25S165E 18S175E 25S160W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S180W
15S170W 22S145W 22S135W 22S120W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M S OF 10S BETWEEN 178W
AND 170E. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE 25S170W
08S163W 25S130W.

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

.CONVERGENCE ZONE 13S154W 10S170W 08S180W. ISOLATED TSTMS
WITHIN 150 NM OF CONVERGENCE ZONE W OF 175W.

.ISOLATED MODERATE TSTMS WITHIN 180 NM OF POINT 05S165E...
AND 15S170E.

$$

.FORECASTER PECHACEK. HONOLULU HI.