High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 251030
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC MON MAY 25 2015

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAY 25 2015.
24 HOUR FORECAST VALID 0600 UTC MAY 26 2015.
48 HOUR FORECAST VALID 0600 UTC MAY 27 2015.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW JUST N OF FORECAST AREA 31N144W 1011 MB MOVING NW 15 KT.
ASSOCIATED FRONT FROM 25N140W TO 19N145W TO 14N152W. FRONT MOVING E
10 KT N OF 19N...AND NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST LOW MOVED FAR N OF FORECAST AREA. WEAKENING FRONT
FROM 23N140W TO 19N145W.
.48 HOUR FORECAST TROUGH FROM 26N140W TO 19N146W

.LOW 28N151W 1013 MB MOVING E 10 KT.
.24 HOUR FORECAST LOW 28N147W 1010 MB. FRONT FROM 30N146W TO LOW TO
21N152W.
.48 HOUR FORECAST LOW MOVED N OF FORECAST AREA. FRONT FROM LOW TO
30N142W TO 26N145W TO 22N150W.

.TROUGH FROM 12N160E TO 09N165E NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 10N160E TO 07N165E.
.48 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.NE TO E WINDS 20 TO 25 KT FROM 17N TO 23N BETWEEN 163W AND 175W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.24 HOUR FORECAST NEW FRONT FROM 30N151W TO 23N154W.
.48 HOUR FORECAST FRONT FROM 30N146W TO 26N148W TO 22N161W.

.24 HOUR FORECAST NEW TROUGH FROM 10N164W TO 04N170W.
.48 HOUR FORECAST NEW LOW 08N165W 1009 MB.

.RIDGE FROM 30N176E TO 28N160E MOVING S SLOWLY.

.24 HOUR FORECAST NEW HIGH 30N173W 1022 MB.
.48 HOUR FORECAST HIGH 29N176W 1020 MB.

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

.SEAS 8 TO 9 FT N OF 25N BETWEEN 150W AND 160W...AND FROM 17N TO 22N
BETWEEN 165W AND 175W.
.24 HOUR FORECAST SEAS DIMINISHED TO 8 FT OR LOWER.

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

.MONSOON TROUGH FROM 06N140W TO 06N146W. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF MONSOON TROUGH.

.ITCZ FROM 05N148W TO 04N165W TO 06N176E. SCATTERED MODERATE
TO STRONG TSTMS WITHIN 300 NM N OF ITCZ BETWEEN 152W AND 174W.
ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 180 NM OF ITCZ.

$$
.FORECASTER HOUSTON. HONOLULU HI.





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