High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 232208
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC MON APR 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 23 2018.
24 HOUR FORECAST VALID 1800 UTC APR 24 2018.
48 HOUR FORECAST VALID 1800 UTC APR 25 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 25S129W 1013 MB MOVING SE 10 KT. TROUGH FROM LOW TO
23S132W TO 21S136W. WIND N 20 TO 25 KT S OF 23S WITHIN 180 NM E OF
TROUGH. ISOLATED MODERATE TSTMS WITHIN 600 NM E OF TROUGH AXIS.
.24 HOUR FORECAST LOW S OF FORECAST AREA. TROUGH FROM 25S127W TO
23S132W. ASSOCIATED WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST TROUGH DISSIPATED.

.LOW NEAR 23S151W 1009 MB MOVING SE 20 KT. TROUGHS FROM LOW TO
25S148W AND FROM LOW TO 23S155W TO 23S160W. ISOLATED MODERATE TSTMS
WITHIN A POLYGON BOUND BY 17S160W 13S148W 25S136W 25S152W 20S166W
17S166W.
.24 HOUR FORECAST LOW S OF FORECAST AREA. TROUGH FROM 25S142W TO
22S148W TO 20S155W.
.48 HOUR FORECAST DEVELOPING COLD FRONT 25S139W TO 20S148W TO
18S156W.

.TROUGH FROM 14S164W TO 17S160W TO 18S156W NEARLY STATIONARY.
ASSOCIATED TSTMS INCLUDED WITH LOW DESCRIBED IMMEDIATELY ABOVE.
.24 HOUR FORECAST TROUGH FROM 09S164W TO 14S161W TO 18S156W.
.48 HOUR FORECAST TROUGH FROM 12S172W TO 15S166W TO 20S162W.

.RIDGE FROM 22S120W TO 16S134W.
.48 HOUR FORECAST RIDGE FROM 22S120W TO 18S129W TO 17S146W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 9 FT FROM 06S TO 14S E OF 128W.
.24 HOUR FORECAST SEAS 8 TO 9 FT SW OF A LINE FROM 21S169W TO
25S156W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 24S BETWEEN 159W AND 139W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.OTHERWISE SCATTERED MODERATE TO STRONG TSTMS N OF 20S W OF 165E...
AND ALSO FROM 10S TO 14S BETWEEN 173E AND 177W. ISOLATED MODERATE
TSTMS ELSEWHERE N OF 23S W OF 170W.
$$

.FORECASTER BEDAL. HONOLULU HI.


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