High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 220333
HSFNP

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 30N163W 1013 MB. TROUGH FROM LOW TO 24N166W. LOW
AND TROUGH MOVING NW 10 KT. ISOLATED MODERATE TSTMS N OF 29N
BETWEEN 158W AND 160W.
.24 HOUR FORECAST LOW MOVED N OF AREA. TROUGH 30N164W 24N167W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED BELOW...
30N167W 20N165W 12N171W.

.TROUGH 23N158W 16N159W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH 25N159W 20N163W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED ABOVE AND
BELOW.

.TROUGH 14N165W 07N177W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 18N162W 09N172W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGHS DESCRIBED ABOVE.

.TROUGH 30N179E 24N179E MOVING W SLOWLY.
.24 HOUR FORECAST 30N175E 25N177E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.ITCZ 08N140W 10N153W 14N158W. ISOLATED MODERATE TSTMS WITHIN 90
NM OF ITCZ.

.RIDGE 30N172E 26N160E MOVING NW SLOWLY.

.E TO SE WINDS 20 TO 30 KT NE OF LINE 10N140W 14N150W 20N145W
30N163W.
.24 HOUR FORECAST NE TO SE WINDS 20 TO 25 KT NE OF LINE 10N140W
13N150W 30N156W. E WINDS 20 TO 25 KT FROM 20N TO 10N W OF 178W.
.48 HOUR FORECAST NE TO SE WINDS 20 TO 25 KT NE OF LINE 09N140W
09N150W 20N160W 30N160W. NE WINDS 20 TO 25 KT FROM 18N TO 09N W OF
178W.

.SEAS 8 TO 12 FT N OF LINE 11N140W 22N160W 09N174W 08N178E
10N160E...AND S OF LINE 30N175E 19N160E.
.24 HOUR FORECAST SEAS 8 TO 11 FT IN AREA 10N140W 20N160W 09N175W
07N174E 16N167E 30N175W.
.48 HOUR FORECAST SEAS 8 TO 11 FT IN AREA 08N140W 18N164W 10N174W
07N174E 15N163E 22N177W 30N173W.

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

.ISOLATED MODERATE TSTMS WITHIN 60 NM OF LINE 05N167E 05N160E.

$$

.FORECASTER POWELL. HONOLULU HI.


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