High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 220323
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED NOV 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC NOV 22 2017.
24 HOUR FORECAST VALID 0000 UTC NOV 23 2017.
48 HOUR FORECAST VALID 0000 UTC NOV 24 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.
.TROUGH FROM 29N164E TO 25N170E TO 19N171E TO 13N167E NEARLY
STATIONARY. SE WINDS 20 TO 30 KT BETWEEN TROUGH AND 180W N OF 19N.
ISOLATED MODERATE TO STRONG TSTMS WITHIN 420 NM E OF TROUGH FROM
22N TO 25N.
.24 HOUR FORECAST TROUGH FROM 30N167E TO 25N170E TO 18N170E. SE
WINDS 20 TO 25 KT BETWEEN TROUGH AND 180W.
.48 HOUR FORECAST TROUGH FROM 30N170E TO 18N170E. SE WINDS 20 TO
25 KT BETWEEN TROUGH AND 180W.

.E WINDS 20 TO 25 KT N OF 19N BETWEEN 165W AND 180W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 18N TO 28N BETWEEN
160W AND 180W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 14N TO 28N BETWEEN
158W AND 180W.

.FRONT FROM 30N143W TO 26N148W TO 23N154W MOVING SE 15 KT. WINDS
20 TO 30 KT N OF LINE FROM 28N140W TO 28N150W TO 22N165W.
.24 HOUR FORECAST FRONT FROM 27N140W TO 22N147W. N TO NE WINDS
20 TO 25 KT N OF 26N BETWEEN 150W AND 160W.
.48 HOUR FORECAST FRONT WEAKENED TO A TROUGH 27N140W TO 23N141W
TO 16N141W. NE WINDS 20 TO 25 KT N OF LINE FROM 30N149W TO
15N158W.

.WEAK STATIONARY FRONT FROM 22N140W TO 19N141W.
.24 HOUR FORECAST FRONT WEAKENED TO A TROUGH FROM 22N140W TO
16N143W.
.48 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED IN PARAGRAPH
DIRECTLY ABOVE.

.TROUGH FROM 12N140W TO 10N147W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 15N140W TO 10N145W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N170W TO 22N160W TO 19N145W NEARLY STATIONARY.

.RIDGE FROM 30N163E TO 27N160E MOVING E SLOWLY.

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

.SEAS 12 TO 16 FT N OF LINE FROM 30N150W TO 25N160W TO 30N164W.
SEAS 12 TO 14 FT IN AREA BOUNDED BY 30N167E TO 30N177E TO
24N175W TO 23N177E TO 30N167E. SEAS 8 TO 12 FT ELSEWHERE N OF
LINE FROM 15N140W TO 10N150W TO 11N175E TO 20N160E.
.24 HOUR FORECAST SEAS 12 TO 18 FT N OF LINE FROM 29N140W TO
23N150W TO 21N165W TO 30N168W. SEAS 8 TO 12 FT ELSEWHERE N OF
LINE FROM 26N140W TO 10N170W TO 10N180W TO 26N160E.
.48 HOUR FORECAST SEAS 12 TO 16 FT N OF LINE FROM 22N140W TO
17N155W TO 17N174W 30N175W. SEAS 8 TO 12 FT ELSEWHERE N OF 11N
W OF 170E. SEAS 8 TO 9 FT N OF 26N W OF 170E.

.SEAS 8 FT OR LESS OVER REST OF FORECAST AREA.

.ITCZ FROM 11N151W TO 10N165W TO 09N177W. ISOLATED MODERATE TSTMS
WITHIN 90 NM OF ITCZ E OF 165W.

.ISOLATED MODERATE TSTMS FROM 10N TO 13N BETWEEN 176E AND 171E.

$$

.FORECASTER WROE. HONOLULU HI.


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