High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 231025
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0600 UTC APR 23 2018.
24 HOUR FORECAST VALID 0600 UTC APR 24 2018.
48 HOUR FORECAST VALID 0600 UTC APR 25 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 30N168E TO 23N160E MOVING E 15 KT.
.24 HOUR FORECAST FRONT DISSIPATED. NEW FRONT FROM 30N175E TO
27N169E TO 28N160E. NE TO E WINDS 20 TO 25 KT N OF 28N W OF 170E.
.48 HOUR FORECAST DISSIPATING FRONT FROM 30N180E TO 28N170E TO
29N160E. NE TO E WINDS 20 TO 25 KT N OF 28N W OF 173E.

.FRONT FROM 30N155W TO 28N164W TO 29N170W MOVING SE 10 KT.
.24 HOUR FORECAST WEAK FRONT FROM 30N141W TO 26N150W TO 25N160W. NE
TO E WINDS 20 TO 25 KT N OF 26N BETWEEN 150W AND 160W.
.48 HOUR FORECAST FRONT DISSIPATED OVER FORECAST WATERS. SEE WINDS
DESCRIBED BELOW.

.TROUGH FROM 11N174E TO 06N168E MOVING W 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 08N160E TO 05N161E TO 01N161E MOVING W SLOWLY. ISOLATED
MODERATE TO LOCALLY STRONG TSTMS S OF 11N W OF 166E.
.24 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.RIDGE FROM 30N180E TO 26N169E MOVING ESE 10 KT AND GRADUALLY
ERODING FROM THE W.

.NE TO E WINDS 20 TO 25 KT FROM 13N TO 19N BETWEEN 152W AND
172E...FROM 10N TO 13N BETWEEN 152W AND 165W...AND FROM 19N TO 24N
BETWEEN 160W AND 180W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 12N TO 23N BETWEEN
152W AND 180W. E WINDS 20 TO 25 KT FROM 12N TO 19N BETWEEN 167E AND
180E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 12N TO 25N BETWEEN
144W AND 170E. E WINDS 20 TO 25 KT FROM 12N TO 20N W OF 170E.

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

.SEAS 8 TO 10 FT BOUNDED BY 30N150W TO 19N166W TO 18N153W TO 12N140W
TO 07N140W TO 10N180E TO 15N169E TO 24N180W TO 30N165W TO 30N150W.
.24 HOUR FORECAST SEAS MAINLY 8 TO 11 FT E OF LINE FROM 30N160W TO
22N175W TO 18N165E TO 12N170E TO 10N178E.
.48 HOUR FORECAST SEAS MAINLY 8 TO 11 FT FROM 10N TO 22N.

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

.ITCZ FROM 06N140W TO 08N160W TO 07N179E. ISOLATED MODERATE TSTMS
WITHIN 330 NM N OF ITCZ.

$$

.FORECASTER KINEL. HONOLULU HI.



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