High Seas Forecast
Issued by NWS

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FZPN40 PHFO 241527
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SAT FEB 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC FEB 24 2018.
24 HOUR FORECAST VALID 1200 UTC FEB 25 2018.
48 HOUR FORECAST VALID 1200 UTC FEB 26 2018.

.WARNINGS.

...GALE WARNING...
.TROUGH FROM 30N170W TO 23N168W TO 09N169W MOVING W SLOWLY. E TO SE
WINDS 25 TO 35 KT N OF 26N BETWEEN 156W AND 161W. E TO SE WINDS 20
TO 30 KT ELSEWHERE N OF A LINE FROM 08N140W TO 08N147W TO 17N160W
TO 30N164W. ISOLATED MODERATE TSTMS WITHIN 390 NM E OF TROUGH S OF
26N...AND N OF 26N BETWEEN 155W AND 161W.
.24 HOUR FORECAST TROUGH FROM 30N170W TO 22N169W TO 15N169W. E TO
SE WINDS 30 TO 35 KT N OF 25N BETWEEN 158W AND 162W. E TO SE WINDS
20 TO 30 KT ELSEWHERE N OF A LINE FROM 10N140W TO 10N150W TO
14N156W TO 30N167W.
.48 HOUR FORECAST TROUGH FROM 30N169W TO 19N169W. E TO SE WINDS 20
TO 30 KT N OF A LINE FROM 10N140W TO 10N153W TO 18N160W TO 30N166W.

.SYNOPSIS AND FORECAST.

.FRONT JUST W OF AREA MOVING E 25 KT.
.24 HOUR FORECAST FRONT FROM 30N168E TO 27N166E TO 27N160E.
.48 HOUR FORECAST WEAKENING FRONT FROM 30N169E TO 26N167E.

.NE TO E WINDS 20 TO 25 KT FROM 06N TO 17N W OF 178E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 16N W OF
176E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 16N W OF
175E.

.RIDGE FROM 30N175E TO 24N160E MOVING ENE SLOWLY.

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

.SEAS 8 TO 12 FT FROM 05N TO 28N E OF 150W...AND N OF A LINE FROM
05N150W TO 10N157W TO 18N162W. SEAS 8 TO 9 FT FROM 06N TO 16N W OF
176E.
.24 HOUR FORECAST SEAS 8 TO 11 FT FROM 06N TO 28N E OF 152W...AND N
OF A LINE FROM 06N152W TO 10N159W TO 30N169W.
.48 HOUR FORECAST SEAS 8 TO 11 FT FROM 07N TO 28N E OF 151W...AND N
OF A LINE FROM 07N151W TO 07N159W TO 30N169W.

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

.ISOLATED MODERATE TSTMS S OF 07N W OF 173E.

.ITCZ FROM 06N140W TO 08N163W. ISOLATED MODERATE TSTMS WITHIN 240
NM N OF ITCZ.

$$

.FORECASTER HOUSTON. HONOLULU HI.



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