669
FZPS40 PHFO 282134
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC JAN 28 2026.
24 HOUR FORECAST VALID 1800 UTC JAN 29 2026.
48 HOUR FORECAST VALID 1800 UTC JAN 30 2026.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL CYCLONE 18P NEAR 21.4S 173.8E MOVING S 23 KT. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 70 KT. WINDS 34 KT OR GREATER 90 NM
NE...55 NM SE...05 NM SW...AND 05 NM NW QUADRANTS. WINDS 20 TO 33
KT S OF 16S BETWEEN 168E AND 178E. SEAS 4 M OR GREATER FROM 23S TO
16S BETWEEN 170E AND 176E. SEAS 2.5 TO 4 M ELSEWHERE S OF 14S
BETWEEN 169E AND 178E. SCATTERED MODERATE TO STRONG TSTMS S OF 19S
BETWEEN 169E AND 179E.
.24 HOUR FORECAST TROPICAL CYCLONE 18P AND ASSOCIATED WINDS MOVED
S OF AREA NEAR 26.6S 172.2E. SEAS 2.5 M TO 4 M S OF 19S BETWEEN
165E AND 179E.
.48 HOUR FORECAST TROPICAL CYCLONE 18P AND ASSOCIATED WINDS AND
SEAS MOVED S OF AREA MOVED S OF AREA.
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 16S166W 1004 MB MOVING SW SLOWLY. TROUGH 25S165W TO
18S165W TO LOW TO 14S176W 17S176E MOVING W SLOWLY. WINDS 20 TO 30
KT WITHIN 300 NM E OF TROUGH. ISOLATED MODERATE TSTMS WITHIN 390
NM E AND N OF TROUGH AND LOW.
.24 HOUR FORECAST LOW NEAR 16S169W 1002 MB TROUGH FROM 25S169W TO
LOW TO 09S174W. WINDS 20 TO 30 KT WITHIN 360 NM E OF TROUGH.
.48 HOUR FORECAST LOW NEAR 16S176W 1003 MB. TROUGH FROM 25S170W
TO LOW TO 14S173E. WINDS 20 TO 30 KT WITHIN 390 NM E OF TROUGH N
OF 20S.
.TROUGH 19S171E 13S160E MOVING SW SLOWLY. WINDS 20 TO 30 KT FROM
10S TO 05S W OF 179E. SCATTERED MODERATE TO STRONG TSTMS FROM
18S TO 05S BETWEEN 170E AND 180E...AND FROM 12S TO 04S W OF 169E.
.24 HOUR FORECAST TROUGH 25S170E 16S160E. WINDS 20 TO 30 KT FROM
14S TO 10S W OF 167E.
.48 HOUR FORECAST TROUGH 25S163E 21S160E. WINDS EASED TO 20 KT OR
LESS.
.24 HOUR FORECAST NEW TROUGH 25S132W 22S138W.
.48 HOUR FORECAST TROUGH 25S127W 21S131W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4.5 M W OF LINE 11S160E 13S168E 15S170E 13S179E
04S177E 04S164E 06S160E. SEAS 2.5 TO 4 M S OF 10S BETWEEN 167W AND
155W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF 10S BETWEEN 170W AND 160W.
SEAS 2.5 TO 3 M FROM 16S TO 07S BETWEEN 163E AND 172W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M FROM 24S TO 08S BETWEEN 174W
AND 164W.
.SEAS 2.5 M OR LESS OVER REMAINDER OF FORECAST AREA.
SCATTERED MODERATE TSTMS FROM 19S TO 09S BETWEEN 147W AND 138W
AND S OF 20S W OF 166E.
.FORECASTER TROTTER. HONOLULU HI.
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