High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 221009
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC NOV 22 2017.
24 HOUR FORECAST VALID 0600 UTC NOV 23 2017.
48 HOUR FORECAST VALID 0600 UTC NOV 24 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.
.RELOCATED TROUGH 29N170E TO 23N174E TO 18N170E TO A LOW AT
14N166E 1006 MB. LOW AND TROUGH MOVING W SLOWLY. SE WINDS 20 TO
30 KT BETWEEN TROUGH AND 180W N OF 19N. SCATTERED MODERATE TSTMS
WITHIN 120 NM EITHER SIDE OF A LINE FROM 28N173E TO 24N175E TO
19N180W.
.24 HOUR FORECAST TROUGH FROM 30N169E TO 18N169E. SE WINDS 20
TO 30 KT BETWEEN TROUGH AND 180W.
.48 HOUR FORECAST TROUGH FROM 30N170E TO 18N170E. E TO SE
WINDS 20 TO 25 KT BETWEEN TROUGH AND 180W.

.FRONT 22N140W TO 16N144W NEARLY STATIONARY
.24 HOUR FORECAST FRONT LITTLE CHANGE.
.48 HOUR FORECAST FRONT NO SIGNIFICANT CHANGE. ABOUT TO
MERGE WITH FRONT DESCRIBED IMMEDIATELY BELOW.

.FRONT 30N141W TO 25N145W TO 23N152W MOVING E SLOWLY.
.24 HOUR FORECAST FRONT 28N140W TO 24N146W.
.48 HOUR FORECAST FRONT 25N140W TO 23N141W.

.FRONT 30N163E TO 27N160E MOVING E NEAR 10 KT...DISSIPATING.
.24 HOUR FORECAST FRONT DISSIPATED OVER FORECAST WATERS.

.TROUGH 14N140W TO 08N146W NEARLY STATIONARY. ISOLATED TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 14N142W TO 08N146W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.E WINDS 20 TO 25 KT N OF 19N BETWEEN 165W AND 180W.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 17N TO 29N BETWEEN
158W AND 180W.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 13N TO 28N BETWEEN
150W AND 180W.

.WINDS 20 TO 25 KT N OF 28N E OF 158W.
.24 HOUR FORECAST N WINDS 20 TO 25 KT N OF 28N BETWEEN 148W AND
157W.
.48 HOUR FORECAST AREA OF N WINDS DIMINISHED TO 20 KT OR LESS.

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

.SEAS 12 TO 16 FT N OF LINE FROM 30N147W TO 27N158W TO 30N164W.
SEAS 8 TO 12 FT ELSEWHERE N OF A  LINE...30N163E 25N165E
15N180W 14N165W 18N150W 26N140W.
.24 HOUR FORECAST SEAS 12 TO 16 FT N OF A LINE...30N164W
24N170W 20N163W 24N145W 26N140W. SEAS 8 TO 12 FT ELSEWHERE N
OF A LINE...26N160E 30N165E 30N169E 21N169E 10N180W 11N167W
18N156W 24N140W.
.48 HOUR FORECAST SEAS 12 TO 14 FT IN AREA BOUNDED BY 30N155W
27N162W 25N174W 16N175W 14N163W 20N149W 30N149W 30N155W.
SEAS 8 TO 12 FT ELSEWHERE N OF A LINE...30N170E 15N172E
12N174E 10N180W 10N150W 15N140W.

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

.ISOLATED MODERATE TSTMS BETWEEN 08N AND 05N W OF 165E/

.ITCZ FROM 09N147W 10N164W 08N173W 10N171E. WIDELY SCATTERED
TSTMS WITHIN 150 NM OF ITCZ.

$$

.FORECASTER LAU. HONOLULU HI.


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