High Seas Forecast
Issued by NWS

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FZPN40 PHFO 252159
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC THU MAY 25 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAY 25 2017.
24 HOUR FORECAST VALID 1800 UTC MAY 26 2017.
48 HOUR FORECAST VALID 1800 UTC MAY 27 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 27N169E 21N169E MOVING W 15 KT.
.24 HOUR FORECAST TROUGH 27N163E TO 22N161E.
.36 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.WEAKENING FRONT 30N148W TO 25N151W. N END MOVG E SLOWLY.
REST OF FRONT NEARLY STATIONARY.
.24 HOUR FORECAST WEAKENING FRONT 30N146W TO 26N150W TO
23N153W.
.48 HOUR FORECAST TROUGH 30N144W TO 25N150W TO 23N153W.

.TROUGH 26N144W TO 20145W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 28N146W TO 22N147W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.WINDS E 20 TO 25 KT SEAS 8 TO 9 FT BETWEEN 169E AND
170W N OF 20N.
.24 HOUR FORECAST WINDS E 20 TO 25 KT SEAS 8 TO 9 FT
BETWEEN 169E AND 175W N OF 20N.
.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.
SEAS LOWERED TO 8 FT OR LESS.

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

.SEAS 8 FT OR LESS REST OF FORECAST AREA.

.SCATTERED MODERATE TSTMS BETWEEN 180W AND 176E FROM
27N TO 22N.

.ITCZ 08N140W 08N153W 04N170W 03N178E 03N160E.
ISOLATED STRONG TSTMS WITHIN 150 NM N OF ITCZ BETWEEN
180W AND 168W. CATTERED MODERATE TSTMS WITHIN 200 NM N OF
ITCZ W OF 180W.SCATTERED MODERATE TSTMS WITHIN 150 NM
EITHER SIDE OF ITCZ E OF 145W.

$$

.FORECASTER LAU. HONOLULU HI.



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