High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 260436
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC APR 26 2018.
24 HOUR FORECAST VALID 0000 UTC APR 27 2018.
48 HOUR FORECAST VALID 0000 UTC APR 28 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S134W TO 22S143W MOVING SE 20 KT. NW WINDS 20 TO 25
KT WITHIN 90 NM NE OF FRONT S OF 23S.
.24 HOUR FORECAST FRONT FROM 25S127W TO 21S138W. WINDS DIMINISHED
TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT 21S120W 20S125W 21S134W.

.TROUGH 22S146W 18S162W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 25S164W 20S163W 15S165W 11S175W MOVING E 15 KT. ISOLATED
TSTMS S OF 18S BETWEEN 155W AND 163W.
.24 HOUR FORECAST TROUGH 25S156W 20S160W 14S170W. NW TO N WINDS
20 TO 25 KT S OF 20S BETWEEN 148W AND 165W.
.48 HOUR FORECAST TROUGH 25S152W 19S160W 15S170W. WINDS NW 20 TO
25 KT S OF 22S BETWEEN 146W AND 154W.

.TROUGH JUST W OF AREA MOVING SE 10 KT.
.24 HOUR FORECAST TROUGH 25S164E 18S161E.
.48 HOUR FORECAST TROUGH 25S167E 14S163E 12S160E.

.ITCZ 03S130W 04S160W NEARLY STATIONARY. ISOLATED MODERATE TSTMS
WITHIN 180 NM S OF ITCZ.

.RIDGE 23S120W 18S136W 15S156W NEARLY STATIONARY.

.SEAS 8 TO 9 FT S OF LINE 25S133W 21S158W 25S160W.
.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 23S BETWEEN 130W AND 140W.
SEAS 8 FT FROM 03S TO 08S BETWEEN 134W AND 146W.
.48 HOUR FORECAST SEAS 8 TO 9 FT SE OF LINE 22S120W 25S130W AND S
OF LINE 25S155W 22S160W 25S170W. SEAS 8 FT FROM 03S TO 09S
BETWEEN 142W AND 153W.

.REMAINDER AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ISOLATED MODERATE TSTMS FROM 14S TO 19S W OF 165E

$$
.HONOLULU FORECASTERS.



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