High Seas Forecast
Issued by NWS

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FZPS40 PHFO 171531
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SAT FEB 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1200 UTC FEB 17 2018.
24 HOUR FORECAST VALID 1200 UTC FEB 18 2018.
48 HOUR FORECAST VALID 1200 UTC FEB 19 2018.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL CYCLONE GITA JUST S OF AREA 25.3S 164.6E 970 MB MOVING
WSW 10 KT. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. WINDS 34 KT
OR GREATER WITHIN 120 NM NE AND 170 NM SW SEMICIRCLES OF TC. SEAS
12 FT OR HIGHER S OF 21S W OF 171E. WINDS 20 TO 33 KT ELSEWHERE S
OF 22S W OF 172E. SEAS 8 TO 12 FT ELSEWHERE S OF 19S W OF 173E.
SCATTERED MODERATE TSTMS S OF 23S BETWEEN 166E AND 162E.
.24 HOUR FORECAST TROPICAL CYCLONE GITA MOVED FAR S OF FORECAST
AREA. WINDS DIMINISHED TO 20 KT OR LESS. SEAS 12 FT TO 15 FT S OF
23S W OF 165E. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE FROM 19S160E
TO 23S170E.
.48 HOUR FORECAST SEE SEAS BELOW.

.SEE LATEST BULLETINS ISSUED BY RSMC WELLINGTON...AND FROM JTWC
UNDER WMO HEADER /WTPS31 PGTW/ FOR MORE INFORMATION.

.SYNOPSIS AND FORECAST.

.LOW 16S162W 1006 MB NM MOVING SSW SLOWLY. TROUGH FROM 25S162W TO
LOW TO 14S163W TO 14S167W TO 18S180E NEARLY STATIONARY. WINDS 20 TO
30 KT WITHIN 270 NM NE AND SE QUADRANTS OF LOW. WINDS 20 TO 25
WITHIN 420 NM W OF TROUGH S OF 23S. SCATTERED MODERATE TO LOCALLY
STRONG TSTMS WITHIN 360 NM N AND NE QUADRANTS OF LOW...AND FROM 07S
TO 12S BETWEEN 163W AND 170W. ISOLATED MODERATE TSTMS ELSEWHERE
WITHIN 210 NM OF A LINE FROM 16S157W TO 25S155W...AND WITHIN 90 NM
SE OF TROUGH W OF 170W.
.24 HOUR FORECAST LOW 19S164W 1006 MB. TROUGH FROM LOW TO 15S159W
TO 13S166W TO 15S178W. WINDS 20 TO 25 KT S OF 22S BETWEEN 168W AND
127W.
.48 HOUR FORECAST LOW 17S167W 1005 MB. TROUGH FROM LOW TO 14S170W
TO 16S179W. WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 01S176E TO 05S176W MOVING SW SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 210 NM NE AND WITHIN 90 NM SW OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 02S175E TO 07S180E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW LOW 21S156W 1005 MB. TROUGH FROM 25S156W TO
LOW TO 15S157W. WINDS 20 TO 30 KT WITHIN 210 NM E OF LOW AND TROUGH
S OF LOW...AND WITHIN 150 NM E OF TROUGH N OF LOW.

.RIDGE FROM 21S149W TO 13S154W TO 05S165W TO 01S176W NEARLY
STATIONARY.

.RIDGE FROM 25S174W TO 17S170W MOVING WSW SLOWLY.

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

.EXCEPT FOR SEAS ASSOCIATED WITH TC GITA...SEAS 8 TO 11 FT S OF 21S
BETWEEN 177W AND 173E. SEAS 8 TO 10 FT S OF 21S BETWEEN 161W AND
172W...AND FROM 14S TO 21S BETWEEN 157W AND 163W.
.24 HOUR FORECAST EXCEPT FOR SEAS ASSOCIATED WITH TC GITA...SEAS 8
TO 10 FT S OF 20S BETWEEN 165W AND 179W. SEAS 8 TO 9 FT S OF 23S
BETWEEN 178E AND 170E.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 14S TO 23S BETWEEN 152W AND
157W. SEAS 8 TO 9 FT S OF 20S BETWEEN 174W AND 170E...AND S OF 22S
W OF 165E.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS N OF 06S W OF 174E...AND FROM 07S TO 12S
BETWEEN 177W AND 170E.

$$

.FORECASTER HOUSTON. HONOLULU HI.



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