High Seas Forecast
Issued by NWS

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734
FZPS40 PHFO 180331
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC SAT NOV 18 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC NOV 18 2017.
24 HOUR FORECAST VALID 0000 UTC NOV 19 2017.
48 HOUR FORECAST VALID 0000 UTC NOV 20 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT 25S177W 20S179W 15S173E 13S167E THENCE TROUGH
12S160E. FRONT MOVING NE 10 KT E OF 178E. REMAINDER OF FRONT
AND TROUGH NEARLY STATIONARY. PRE-FRONTAL TROUGH 07S160E 09S170E
14S178E MOVING SW SLOWLY. NUMEROUS STRONG TSTMS WITHIN 210 NM
OF LINE 07S168E 09S177E 12S176W 18S172W 24S169W. SCATTERED
MODERATE TO STRONG TSTMS WITHIN 120 NM E OF FRONT S OF 23S...
FROM 17S TO 20S BETWEEN 177W AND 180W...AND FROM 05S TO 13S W OF
165E.
.24 HOUR FORECAST FRONT 25S175W 17S180E THENCE TROUGH 13S172E
12S160E. PRE-FRONTAL TROUGH DISSIPATED.
.48 HOUR FORECAST FRONT DISSIPATED. TROUGH 25S173W 18S180W 13S160E.

.FRONT 25S130W 20S134W 16S142W 16S151W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 14S TO 18S BETWEEN 139W AND 150W.
.24 HOUR FORECAST FRONT DISSIPATED. TROUGH 25S129W 17S134W
11S147W.
.48 HOUR FORECAST TROUGH 25S127W 18S131W 13S139W 11S156W.

.TROUGH 18S130W 22S126W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE 25S159W 16S165W 07S175W 02S173 NEARLY STATIONARY.

.RIDGE 25S162E 18S176E MOVING SE SLOWLY AND BUILDING E.

.SEAS 8 TO 9 FT S OF 20S BETWEEN 146W AND 162W.
.24 HOUR FORECAST SEAS 8 TO 11 FT S OF 22S BETWEEN 177E AND
164E. SEAS 8 TO 9 FT S OF 22S BETWEEN 132W AND 145W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 21S BETWEEN 145W
AND 152W.

.ENTIRE AREA WINDS 20 KT OR LESS. REMAINDER OF AREA SEAS
8 FT OR LESS.

$$

.FORECASTER BIRCHARD. HONOLULU HI.



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