815
FZPS40 PHFO 181512
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN JAN 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 18 2026.
24 HOUR FORECAST VALID 1200 UTC JAN 19 2026.
48 HOUR FORECAST VALID 1200 UTC JAN 20 2026.
.WARNINGS.
..GALE WARNING
LOW...POSSIBLE DEVELOPING TROPICAL CYCLONE
JUST W OF FORECAST
AREA NEAR 16S158E 995 MB NEARLY STATIONARY. TROUGH FROM LOW TO
22S167E MOVING S SLOWLY. WINDS 20 TO 25 KT FROM 16S TO 10S W OF
167E. ISOLATED MODERATE TO LOCALLY STRONG TSTMS FROM 13S TO 08S W
OF 166E...AND WITHIN 240 NM OF TROUGH.
24 HOUR FORECAST LOW...POSSIBLE DEVELOPING TROPICAL CYCLONE
NEAR
17S160E 993 MB. TROUGH FROM LOW TO 25S166E. WINDS 20 TO 30 KT AND
SEAS 2.5 TO 4.5 M FROM 21S TO 08S W OF 170E.
48 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE
NEAR 23S163E
990 MB. TROUGH 20S160E TO LOW TO 25S164E. WINDS 30 TO 35 KT WITHIN
300 NM NE SEMICIRCLE OF LOW. WINDS 20 TO 30 KT AND SEAS 2.5 TO
5 M ELSEWHERE S OF LINE 11S160E 16S170E 25S172E.
.SYNOPSIS AND FORECAST.
.TROUGH 25S160W 20S156W NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 25S161W 16S157W.
.48 HOUR FORECAST TROUGH 25S155W 23S152W 18S155W.
.24 HOUR FORECAST NEW TROUGH 25S165W 22S164W 13S174W.
.48 HOUR FORECAST TROUGH 25S160W 20S161W 17S170W.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.SCATTERED MODERATE TO LOCALLY STRONG TSTMS FROM 18S TO 15S
BETWEEN 176E AND 171E. NUMEROUS MODERATE TSTMS S OF 12S BETWEEN
125W AND 150W.
.FORECASTER ALMANZA. HONOLULU HI.
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