High Seas Forecast
Issued by NWS

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134
FZPN40 PHFO 210324
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC MON MAY 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAY 21 2018.
24 HOUR FORECAST VALID 0000 UTC MAY 22 2018.
48 HOUR FORECAST VALID 0000 UTC MAY 23 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N152W 26N152W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 30N151W 26N154W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 28N166W 25N169W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW FRONT 30N148W 29N154W.

.RIDGE 30N179E 26N160E NEARLY STATIONARY.

.NE TO E WINDS 20 TO 25 KT FROM 06N TO 25N E OF 170W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 08N TO 25N E OF
177E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 08N TO 25N
BETWEEN 150W AND 170E.

.SEAS 8 TO 9 FT FROM 08N TO 22N E OF 166W.
.24 HOUR FORECAST SEAS LOWERED TO 8 FT OR LESS.

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

.ITCZ 10N140W 06N160W 05N170W 04N174E. ISOLATED TO SCATTERED
MODERATE TSTMS WITHIN 150 NM OF ITCZ W OF 149W.

.SCATTERED MODERATE TO LOCALLY STRONG TSTMS FROM 19N TO 24N
BETWEEN 170W AND 174W. ISOLATED MODERATE TSTMS FROM 12N TO 18N W
OF 165E.

$$

.FORECASTER EATON. HONOLULU HI.



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