981
FZPS40 PHFO 281018
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC WED JAN 28 2026
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JAN 28 2026.
24 HOUR FORECAST VALID 0600 UTC JAN 29 2026.
48 HOUR FORECAST VALID 0600 UTC JAN 30 2026.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL CYCLONE 18P NEAR 16.9S 172.2E MOVING SSE 13 KT. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. WINDS 34 KT OR GREATER 60 NM
NE...80 NM SE...05 NM SW...AND 05 NM NW QUADRANTS. WINDS 20 TO 33
KT S OF 13S BETWEEN 169E AND 177E. SEAS 4 M OR GREATER FROM 17S TO
13S BETWEEN 171E AND 175E. SEAS 2.5 TO 4 M ELSEWHERE S OF 12S
BETWEEN 170E AND 177E.
.24 HOUR FORECAST TROPICAL CYCLONE 18P NEAR 24.0S 172.2E. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. WINDS 34 KT OR GREATER 60 NM
NE...130 NM SE...110 NM SW...AND 40 NM NW QUADRANTS. WINDS 20 TO
33 KT S OF 13S BETWEEN 169E AND 177E. SEAS 4 M OR GREATER S OF 22S
BETWEEN 170E AND 176E. SEAS 2.5 M TO 4 M ELSEWHERE S OF 19S
BETWEEN 166E AND 179E.
.48 HOUR FORECAST TROPICAL CYCLONE 18P MOVED S OF AREA.
ASSOCIATED WINDS MOVED S OF AREA. SEAS 2.5 TO 3 M S OF 23S W OF
172E.
SEE WTPS31 PGTW ISSUED BY JOINT TYPHOON WARNING CENTER FOR MORE
INFORMATION.
FORECAST WINDS NEAR TROPICAL CYCLONE SHOULD BE USED WITH CAUTION
DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY.
.SYNOPSIS AND FORECAST.
.LOW NEAR 18S173W 1005 MB MOVING N SLOWLY. TROUGH 21S174W TO LOW
TO 16S172W NEARLY STATIONARY. ISOLATED MODERATE TSTMS WITHIN 150
NM W OF TROUGH AND LOW.
.24 HOUR FORECAST LOW NEAR 16S172W 1006 MB. TROUGH 19S173W TO LOW
TO 14S171E.
.48 HOUR FORECAST LOW AND TROUGH DISSIPATED.
.TROUGH 25S163W 20S162W 14S168W 11S176W 08S170E 08S160E MOVING SW
SLOWLY. WINDS 20 TO 30 KT IN AREA BOUNDED BY 07S160E 04S170E
09S179E 13S176E 13S168E 11S160E 07S160E...AND FROM 19S TO 12S
BETWEEN 168W AND 161W. SCATTERED MODERATE TO STRONG TSTMS WITHIN
270 NM OF TROUGH.
.24 HOUR FORECAST NEW LOW NEAR 13S170W 1003 MB. TROUGH 25S168W
17S166W TO LOW TO 11S174E 10S160E. WINDS 20 TO 30 KT FROM 12S TO
06S W OF 175E...AND IN AREA BOUNDED BY 11S179W 09S172W 14S165W
25S165W 25S168W 13S171W 14S178W 11S179W.
.48 HOUR FORECAST LOW NEAR 14S171W 1001 MB. TROUGH 25S170W
18S169W TO LOW TO 13S179W 09S170E 09S160E. WINDS 20 TO 30 KT FROM
17S TO 10S BETWEEN 172W AND 166W.
.48 HOUR FORECAST NEW TROUGH 25S120W 23S138W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OVER REMAINDER OF FORECAST AREA.
.SEAS 4 TO 5 M FROM 11S TO 07S BETWEEN 169E AND 174E. SEAS 2.5 TO
4 M ELSEWHERE FROM 12S TO 03S BETWEEN 161E AND 179E....AND S OF
11S BETWEEN 168W AND 156W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M IN AREA BOUNDED BY 06S162E
07S177E 14S178W 18S177E 17S171E 11S162E 06S162E...AND BOUNDED BY
AREA 09S175W 11S166W 25S159W 25S168W 15S169W 09S175W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF 08S BETWEEN 174W AND 165W.
.ISOLATED MODERATE TSTMS FROM 17S TO 09S BETWEEN 150W AND
137W...AND S OF 22S W OF 167E.
.FORECASTER PIERCE. HONOLULU HI.
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