High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 201004
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC FRI APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20 2018.
24 HOUR FORECAST VALID 0600 UTC APR 21 2018.
48 HOUR FORECAST VALID 0600 UTC APR 22 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 03N166E 1006 MB MOVING N 10 KT. TROUGH FROM 10N171E TO LOW TO
03N160E MOVING N SLOWLY. SCATTERED MODERATE TO STRONG TSTMS S OF
12N W OF 175E.
.24 HOUR FORECAST LOW 07N166E 1005 MB. TROUGH FROM 12N166E TO LOW
TO 03N160E.
.48 HOUR FORECAST LOW 08N160E 1004 MB. TROUGH FROM 13N162E TO LOW.

.TROUGH FROM 30N154W TO 26N158W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT FROM 08N TO 18N E OF 172W...AND FROM
18N TO 20N E OF 152W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 08N TO 22N E OF
152W...AND FROM 12N TO 19N BETWEEN 152W AND 175W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 08N AND 21N E OF
160W...FROM 13N TO 22N BETWEEN 160W AND 180E...AND FROM 13N TO 20N
W OF 180E.

.48 HOUR FORECAST NEW LOW JUST NW OF AREA NEAR 31N159E 1011 MB.
ASSOCIATED FRONT FROM 30N162E TO 27N160E. S WINDS 20 TO 25 KT
WITHIN 210 NM E OF FRONT N OF 28N.

.RIDGE FROM 30N180E TO 27N160E MOVING NNE SLOWLY.

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

.SEAS 8 TO 9 FT FROM 09N TO 17N BETWEEN 156W AND 176W...AND FROM
12N TO 19N W OF 168E.
.24 HOUR FORECAST SEAS 8 TO 11 FT FROM 10N TO 19N BETWEEN 150W AND
171W. SEAS 8 TO 9 FT N OF 06N E OF 150W.
.48 HOUR FORECAST SEAS 8 TO 11 FT FROM 09N TO 20N BETWEEN 150W AND
180E. SEAS 8 TO 10 FT FROM 07N TO 22N E OF 150W.

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

.ITCZ FROM 07N140W TO 09N165W TO 09N176E. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 210 NM N OF AND 120 NM S OF ITCZ.
$$

.FORECASTER HOUSTON. HONOLULU HI.


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