355
FZPS40 PHFO 311432
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC WED DEC 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC DEC 31 2025.
24 HOUR FORECAST VALID 1200 UTC JAN 01 2026.
48 HOUR FORECAST VALID 1200 UTC JAN 02 2026.
.WARNINGS.
..GALE WARNING
.LOW NEAR 15S165W 1000 MB MOVING S 10 KT. TROUGH 20S157W 21S163W
TO LOW TO 12S166W 11S176W. WINDS 30 TO 35 KT WITHIN 90 NM E SEMICIRCLE
OF LOW. WINDS 20 TO 30 KT WITHIN 180 NM NE OF FRONT N OF 19S. SEAS
2.5 TO 4.5 M FROM 17S TO 10S BETWEEN TROUGH AND 160W. ISOLATED MODERATE
TSTMS WITHIN 210 NM NE OF TROUGH... AND FROM 14S TO 07S BETWEEN 178E
AND 177W.
.24 HOUR FORECAST LOW NEAR 22S166W 1001 MB. TROUGH 25S167W TO LOW TO
14S165W 11S170W 12S174W. WINDS 30 TO 35 KT WITHIN 120 NM SE SEMICIRCLE.
WINDS 20 TO 30 KT S OF 21S BETWEEN 170W AND 164W. SEAS 2.5 TO 4.5
M FROM 23S TO 19S BETWEEN 167W AND 161W.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH 25S166W 19S166W. WINDS
EASED TO 20 KT OR LESS. SEAS DIMINISHED TO 2.5 M OR LOWER.
.SYNOPSIS AND FORECAST.
.FRONT 25S179E 17S177E THENCE TROUGH 08S167E 08S160E NEARLY STATIONARY.
SCATTERED MODERATE TSTMS FROM 10S TO 06S W OF 166E. ISOLATED MODERATE
TSTMS ELSEWHERE WITIN 180 NM NE OF TROUGH AND FRONT.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH. TROUGH 25S179W 19S177E
14S180E 08S170E 07S160E. WINDS 20 TO 25 KT FROM TROUGH TO 10S BETWEEN
173E AND 175W.
.48 HOUR FORECAST TROUGH 25S179W 20S177E 14S180E 09S173E 08S160E. WINDS
20 TO 30 KT FROM 16S TO 09S BETWEEN 179E AND 174W.
.24 HOUR FORECAST NEW TROUGH 12S140W 04S148W.
.48 HOUR FORECAST TROUGH 14S145W 06S160W.
.SEAS 2.5 TO 3.5 M S OF 18S W OF 180W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 17S TO 12S BETWEEN 175W AND
180W.
.48 HOUR FORECAST SEAS LOWERED TO 2.5 OR LOWER.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST
AREA.
ISOLATED MODERATE TSTMS FROM 20S TO 15S BETWEEN 146W AND 140W
AND S OF 20S BETWEEN 137W AND 130W.
.FORECASTER SHIGESATO. HONOLULU HI.
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