The High Seas Forecast for the South Pacific

High Seas Forecast   Issued: 01/28/2026 01:17:10 AM UTC

                        
247
FZPS40 PHFO 271517
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC TUE JAN 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC JAN 27 2026.
24 HOUR FORECAST VALID 1200 UTC JAN 28 2026.
48 HOUR FORECAST VALID 1200 UTC JAN 29 2026.

.WARNINGS.

...GALE WARNING...
.LOW 15S165W 1005 MB MOVING S SLOWLY. TROUGH 25S162W 22S161W
17S162W TO LOW TO 11S175W MOVING W 10 KT. WINDS 30 TO 35 KT
WITHIN 150 NM NE AND E OF TROUGH AND LOW. WINDS 20 TO 30 KT
ELSEWHERE WITHIN 300 NM NE AND E OF TROUGH AND LOW. SEAS 4 TO 5 M
WITHIN 120 NM OF A LINE 25S160W 18S159W 13S165W...SEAS 2.5 TO 4 M
ELSEWHERE WITHIN 360 NM. ISOLATED STRONG TSTMS WITHIN 120 NM OF
TROUGH AND LOW N OF 17S. ISOLATED MODERATE TSTMS WITHIN 120 NM E
OF TROUGH S OF 20S.
.24 HOUR FORECAST 17S166W 1007 MB. TROUGH 25S166W TO LOW TO
12S170W. WINDS 30 TO 35 KT WITHIN 180 NM NE SEMICIRCLE OF LOW.
WINDS 20 TO 30 KT ELSEWHERE WITHIN 210 NM NE SEMICIRCLE OF
LOW...AND WITHIN 120 NM OF TROUGH W OF LOW. SEAS 4 TO 4.5 M FROM
19S TO 13S BETWEEN 162W AND 166W. SEAS 2.5 TO 4 M ELSEWHERE IN
AREA BOUNDED BY 25S166W 17S170W 12S173W 10S173W 10S166W 15S160W
25S155W.
.48 HOUR FORECAST LOW 20S170W 1005 MB. NEW LOW 12S172W 1006 MB.
TROUGH 25S170W TO FIRST LOW TO SECOND LOW. WINDS 20 TO 30 KT
WITHIN 180 NM NE AND E OF TROUGH AND LOWS. SEAS 2.5 TO 4 M WITHIN
180 NM OF A LINE 25S165W 11S170W.

...GALE WARNING...
.LOW 14S169E 1001 MB...POSSIBLE DEVELOPING TROPICAL
CYCLONE....MOVING SE 15 KT. TROUGH 10S160E 10S164E TO LOW TO
17S171E 19S174E MOVING S SLOWLY. WINDS 20 TO 30 KT AND SEAS 2.5
TO 4 M FROM 14S TO 05S W OF 175E. NUMEROUS STRONG TSTMS FROM 15S
TO 05S BETWEEN 172E AND 164E. SCATTERED MODERATE TSTMS ELSEWHERE
FROM 10S TO 01S W OF 179E.
.24 HOUR FORECAST LOW 18S172E 988 MB...POSSIBLE TROPICAL
CYCLONE...TROUGH 25S173E TO LOW TO 12S165E TO 13S160E. WINDS 30
TO 45 KT AND SEAS 4 TO 6.5 M WITHIN 210 NM SE SEMICIRCLE OF LOW.
WINDS 20 TO 30 KT AND SEAS 2.5 TO 4 M ELSEWHERE S OF 05S W OF
180W...EXCEPT S OF 11S W OF 168E.
.48 HOUR FORECAST LOW MOVED S OF AREA NEAR 26S171E 993
MB...POSSIBLE TROPICAL CYCLONE...TROUGH FROM LOW 15S164E 11S160E.
WINDS 20 TO 30 KT FROM 12S TO 07S W OF 170E...AND S OF 23S BETWEEN
173W AND 170W. SEAS 2.5 TO 4 M FROM 13S TO 08S W OF 170E. SEAS
2.5 TO 3.5 M S OF 07S BETWEEN 180W AND 170E.

.SYNOPSIS AND FORECAST.

.LOW 18S172W 1002 MB NEARLY STATIONARY. TROUGH 25S171W TO LOW TO
15S177W MOVING W 10 KT S OF LOW...NEARLY STATIONARY ELSEWHERE.
SCATTERED MODERATE TO LOCALLY STRONG TSTMS WITHIN 90 NM OF
LOW...AND WITHIN 90 NM OF TROUGH N OF LOW.
.24 HOUR FORECAST LOW 18S173W 1006 MB. 17S175W TO LOW TO 17S170W.
.48 HOUR FORECAST LOW WEAKENED TO TROUGH 18S178E 19S175W.

.TROUGH 25S137W 20S140W 17S148W MOVING SW SLOWLY AND ERODING FROM
THE W. ISOLATED TO SCATTERED MODERATE TSTMS FROM 21S TO 10S
BETWEEN 133W AND 148W.
.24 HOUR FORECAST TROUGH 25S138W 21S141W.
.48 HOUR FORECAST TROUGH DISSIPATED.

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

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


$$

.FORECASTER ALMANZA. HONOLULU HI.