High Seas Forecast
Issued by NWS

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FZPS40 PHFO 021108
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC SAT AUG 02 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 02 2025.
24 HOUR FORECAST VALID 0600 UTC AUG 03 2025.
48 HOUR FORECAST VALID 0600 UTC AUG 04 2025.

.WARNINGS.

...GALE WARNING...
.24 HOUR FORECAST NEW FRONT 25S165E 20S160E. WINDS 20 TO 30 KT S
OF 22S BETWEEN 165E AND 170E.
.48 HOUR FORECAST FRONT 25S170E 20S168E THENCE TROUGH 15S160E. WINDS
30 TO 35 KT S OF 23S BETWEEN FRONT AND 175E. WINDS 20 TO 25 KT ELSEWHERE
S OF 20S W OF 180W.

.SYNOPSIS AND FORECAST.

.FRONT 20S120W 15S130W 13S142W MOVING SE 15 KT S OF 17S AND
NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST WEAK FRONT 20S120W 15S136W.
.48 HOUR FORECAST FRONT DISSIPATED.

.FRONT 25S157W 18S161W 12S172W THENCE TROUGH 08S180W 05S177E.
FRONT MOVING E 15 KT AND TROUGH MOVING W 10 KT. WINDS 20 TO 25 KT
S OF 20S BETWEEN FRONT AND 150W.
.24 HOUR FORECAST FRONT AND TROUGH MERGED WITH FRONT DESCRIBED
IMMEDIATELY BELOW.

.FRONT 25S162W 19S173W 19S178E MOVING ENE 25 KT. WINDS 20 TO 25
KT S OF 21S BETWEEN 177W AND 160W.
.24 HOUR FORECAST FRONT 25S149W 18S160W THENCE TROUGH 13S170W
10S180E. WINDS 20 TO 30 KT S OF 20S BETWEEN 170W AND 142W.
.48 HOUR FORECAST FRONT 25S144W 15S155W THENCE TROUGH 11S160W.
WINDS 20 TO 25 KT S OF 20S BETWEEN 165W AND 155W.

.TROUGH 03S168W 07S168W 04S168W 11S166W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MERGES WITH FRONT AND TROUGH DESCRIBED
IMMEDIATELY ABOVE.

.48 HOUR FORECAST NEW TROUGH 05S168E 10S174E.

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

.SEAS 4 TO 5 M S OF 23S BETWEEN 175E AND 165W... AND S OF LINE 15S135W
20S120W. SEAS 2.5 TO 4 M ELSEWHERE S OF 20S BETWEEN 180W AND 155W...
AND S OF 20S E OF 140W.
.24 HOUR FORECAST SEAS 4 TO 6 M S OF LINE 23S180W 17S165W 25S154W...
AND S OF 23S W OF 163E. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE 21S160E
20S180W 15S170W 25S148W... AND FROM 18S TO 03S E OF 130W.
.48 HOUR FORECAST SEAS 5 TO 6 M S OF 23S BETWEEN 171W AND 155W. SEAS
4 TO 5 M ELSEWHERE S OF 18S BETWEEN 180W AND 148W... AND S OF 23S
W OF 175E. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE 20S160E 10S170W 10S160W
25S145W.

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

$$

.FORECASTER SHIGESATO. HONOLULU HI.