High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 261142
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC THU APR 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 26 2018.
24 HOUR FORECAST VALID 0600 UTC APR 27 2018.
48 HOUR FORECAST VALID 0600 UTC APR 28 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 25S135W TO 24S139W TO 23S142W MOVING E 15 KT.
.24 HOUR FORECAST FRONT FROM 25S127W TO 23S130W TO
22S135W.
.48 HOUR FORECAST FRONT FROM 24S120W TO 21S126W.

.TROUGH DEVELOPING OVER FORECAST AREA.
.24 HOUR FORECAST TROUGH FROM 25S120W TO 22S125W.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED IMMEDIATELY
ABOVE.

.TROUGHS FROM 25S161W TO 23S160W TO 20S162W MOVING E 15 KT AND
ALSO FROM 09S171W TO 15S165W TO 17S158W TO 22S151W NEARLY
STATIONARY. SCATTERED MODERATE TSTMS WITHIN A POLYGON BOUND BY
10S163W 17S150W 25S147W 25S160W 10S176W 10S167W.
.24 HOUR FORECAST DEVELOPING COLD FRONT FROM 25S154W TO 21S157W TO
17S162W. TROUGH FROM 13S151W TO 17S162W. WINDS NW TO N 20 TO 30 KT
S OF 21S WITHIN 360 NM E OF FRONT.
.48 HOUR FORECAST FRONT FROM 26S148W TO 20S156W TO 17S162W.
TROUGH FROM 13S151W TO 17S162W. WIND NW 20 TO 25 KT S OF 23S WITHIN
180 NM E OF FRONT.

.TROUGH DEVELOPING OVER FORECAST AREA.
.48 HOUR FORECAST TROUGH FROM 11S169E TO 14S178E.

.TROUGH FROM 18S160E TO 24S165E MOVING E SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 360 NM E OF TROUGH AXIS.
.24 HOUR FORECAST TROUGH FROM 25S169E TO 19S165E TO 17S160E.
.48 HOUR FORECAST DEVELOPING COLD FRONT FROM 25S174E TO 21S170E
TO 19S165E.

.RIDGE FROM 22S120W TO 16S142W TO 09S160W.
.24 HOUR FORECAST RIDGE FROM 20S142W TO 16S153W TO 12S162W.
.48 HOUR FORECAST RIDGE FROM 23S142W TO 18S153W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA

.SEAS 8 TO 9 FT S OF 24S BETWEEN 145W AND 130W.
.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 24S BETWEEN 167W AND 140W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 24S BETWEEN 162W AND 140W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 06S130W TO 04S142W TO 05S153W TO 03S161W. SCATTERED
MODERATE TSTMS WITHIN 90 NM EITHER SIDE OF CONVERGENCE LINE.

$$

.FORECASTER BEDAL. HONOLULU HI.



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