916
FZPS40 PHFO 151117
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC MON DEC 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC DEC 15 2025.
24 HOUR FORECAST VALID 0600 UTC DEC 16 2025.
48 HOUR FORECAST VALID 0600 UTC DEC 17 2025.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL CYCLONE 08P 14.7S 170.9E 998 MB MOVING SE 07 KT. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. WINDS 34 KT OR GREATER WITHIN
70 NM NE...AND 40 NM SE QUADRANTS. WINDS 20 TO 33 KT ELSEWHERE
WITHIN 120 NM FROM CENTER. SEAS 2.5 TO 4.5 M WITHIN 180 NM OF
CENTER. NUMEROUS MODERATE TO STRONG TSTMS WITHIN 150 NM NE
SEMICIRCLE OF CENTER.
.24 HOUR FORECAST TROPICAL CYCLONE 08P 15.3S 174.4E. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 65 KT. WINDS 34 KT OR GREATER WITHIN
60 NM NE...50 NM SE...30 NM SW...40 NM NW QUADRANTS. WINDS 20 TO
33 KT ELSEWHERE WITHIN 120 NM OF CENTER. SEAS 2.5 TO 5 M WITHIN
150 NM E SEMICIRCLE...AND 90 NM W SEMICIRCLE OF CENTER.
.48 HOUR FORECAST TROPICAL CYCLONE 08P 15.6S 178.7E. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. WINDS 34 KT OR GREATER WITHIN
60 NM NE...40 NM SE...30 NM SW...30 NM NW QUADRANTS. WINDS 20 TO
33 KT ELSEWHERE WITHIN 180 NM NE SEMICIRCLE...AND WITHIN 90 NM SE
SEMICIRCLE. SEAS 2.5 TO 5.5 M WITHIN 180 NM E SEMICIRCLE OF
CENTER.
FORECAST WINDS NEAR TROPICAL CYCLONES SHOULD BE USED WITH CAUTION
DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE...AND INTENSITY.
SEE THE LATEST BULLETIN FROM JTWC UNDER WMO HEADER WTPS31 PGTW
FOR ADDITIONAL DETAILS.
.SYNOPSIS AND FORECAST.
.LOW 16S174W 1007 MB MOVING SE 10 KT. 25S168W 19S169W TO LOW
16S176E MOVING E 15 KT. ISOLATED MODERATE TSTMS WITHIN 240 NM OF
LOW.
.24 HOUR FORECAST LOW 17S171W 1007 MB. NEW SECOND LOW 20S158W
1008 MB. TROUGH 25S157W TO SECOND LOW TO FIRST LOW TO 18S180W.
.48 HOUR FORECAST FIRST LOW 18S166W 1006 MB. SECOND LOW 25S146W.
TROUGH FROM SECOND LOW TO 20S157W TO FIRST LOW TO 17S174W. WINDS
20 TO 30 KT AND SEAS 2.5 TO 3 M S OF 21S BETWEEN 142W AND
147W.
.TROUGH 25S151W 21S150W 17S154W 13S166W MOVING S 10 KT. ISOLATED
MODERATE TSTMS WITHIN 300 NM NE OF TROUGH. NUMEROUS MODERATE TO
STRONG TSTMS FROM 18S TO 11S BETWEEN 142W AND 149W. ISOLATED
MODERATE TSTMS ELSEWHERE S OF 10S BETWEEN 141W AND 160W.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.
.TROUGH 08S160E 10S163E NEARLY STATIONARY. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 09S160E 15S170E.
.48 HOUR FORECAST TROUGH 10S160E 15S170E 16S177E.
.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.
.SCATTERED MODERATE TSTMS WITHIN 120 NM OF LINE 11S157W 15S147W
25S145W...AND WITHIN 90 NM OF POINT 10S169E.
.FORECASTER ALMANZA. HONOLULU HI.
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