High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 181524
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN FEB 18 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 18 2018.
24 HOUR FORECAST VALID 1200 UTC FEB 19 2018.
48 HOUR FORECAST VALID 1200 UTC FEB 20 2018.

.WARNINGS.

...GALE WARNING...
.LOW 17S161W 1006 MB MOVING SE 15 KT. TROUGH FROM LOW TO 10S167W
TO 08S174W. WINDS 20 TO 25 KT WITHIN 300 NM NE QUADRANT. SCATTERED
MODERATE TO STRONG TSTMS WITHIN 120 NM EITHER SIDE OF A LINE FROM
04S176W TO 09S159W TO 17S156W.
.24 HOUR FORECAST LOW 20S155W 1003 MB. TROUGH FROM LOW TO 10S157W.
WINDS 20 TO 35 KT SEAS 8 TO 12 FT WITHIN 320 NM E AND SE QUADRANTS
OF LOW. WINDS 20 TO 25 KT WITHIN 280 NM OF TROUGH. SECOND TROUGH
FROM LOW TO 17S160W.
.48 HOUR FORECAST LOW MOVED S OF FORECAST WATERS. TROUGH FROM
25S155W TO 18S160W TO A NEW LOW AT 15S165W 1006 MB. WINDS 20 TO 25
KT SEAS 8 TO 12 FT WITHIN 320 NM E OF TROUGH S OF 20S.

.SYNOPSIS AND FORECAST.

.LOW 15S168W 1005 MB NEARLY STATIONARY. TROUGH FROM LOW TO 13S180W
TO 13S168E MOVING S SLOWLY.
.24 HOUR FORECAST LOW 14S167W 1006 MB. TROUGH FROM LOW TO 14S175W
TO 15S175E.
.48 HOUR FORECAST LOW 15S165W 1006 MB. TROUGH FROM LOW TO 15S172W
TO 16S176E.

.LOW 15S162E 1007 MB MOVING W SLOWLY. TROUGH FROM LOW TO 20S16E
MOVING W SLOWLY.
.24 HOUR FORECAST LOW AND TROUGH MOVED W OF FORECAST WATERS.

.LOW 18S168W 1006 MB MOVING NW 15 KT. TROUGH FROM LOW TO 13S180W
TO 13S170E NEARLY STATIONARY.
.24 HOUR FORECAST LOW DISSIPATED.

.TROUGH FROM T.C. GITA FROM 25S161E TO 20S161E MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH FROM 25S161E TO 20S160E.
.48 HOUR FORECAST TROUGH MOVED W OF FORECAST WATERS.

.RIDGE FROM 16S130W TO 05S155W TO 02S175W TO 00S170E NEARLY
STATIONARY.

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

.SEAS ASSOCIATED WITH T.C. GITA...8 TO 13 FT S OF A LINE FROM
20S160E TO 25S172E.
.24 HOUR FORECAST SEAS LOWERED TO 8 FT OR LESS.

.SEAS ELSEWHERE 8 FT OR LESS.

.SCATTERED MODERATE TO ISOLATED STRONG TSTMS WITHIN 120 NM EITHER
SIDE OF A LINE FROM 05S161E TO 08S170E TO 09S180W. SCATTERED
MODERATE TSTMS WITHIN 100 NM E OF A LINE FROM 02S174E TO 07S179E.
ISOLATED TSTMS S OF 17S BETWEEN 129W AND 137W.

$$

.FORECASTER LAU. HONOLULU HI.


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