High Seas Forecast
Issued by NWS

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FZPN40 PHFO 291653 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC MON MAY 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAY 29 2017.
24 HOUR FORECAST VALID 1200 UTC MAY 30 2017.
48 HOUR FORECAST VALID 1200 UTC MAY 31 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW APPROACHING FORECAST AREA FROM W.
.48 HOUR FORECAST LOW JUST W OF FORECAST AREA NEAR 30N158E 1006 MB.
WINDS S TO SW 20 TO 25 25 KT N OF 26N W OF 163E.

.TROUGH FROM 30N140W TO 28N145W MOVING NE SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 22N156W TO 26N152W MOVING NW 10 KT. SCATTERED MODERATE
TO STRONG TSTMS WITHIN 150 NM OF TROUGH AXIS.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 18N173W TO 21N166W TO 26N162W TO 29N157W. TROUGH
NEARLY STATIONARY N OF 23N AND MOVING W 10 KT S OF 23N.
.24 HOUR FORECAST TROUGHS FROM 18N175W TO 23N171W AND FROM 25N161W
TO 30N156W.
.48 HOUR FORECAST TROUGH FROM 22N178W TO 25N175W AND FROM 26N162W
TO 30N154W.

.TROUGH FROM 18N171E TO 21N172E TO 24N174E MOVING NNE 10 KT.
ISOLATED MODERATE TSTMS FROM 24N TO 18N BETWEEN 170E AND 179E.
.24 HOUR FORECAST TROUGH FROM 22N169E TO 25N171E TO 28N173E.
.48 HOUR FORECAST TROUGH FROM 27N168E TO 30N174E.

.TROUGH FROM 21N160E TO 27N163E MOVING NNE 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED W OF FORECAST AREA.

.HIGH NEAR 28N177W 1020 MB MOVING E SLOWLY. RIDGES FROM HIGH TO
28N167W AND FROM HIGH TO 29N172E TO 28N160E.
.24 HOUR FORECAST HIGH NEAR 28N167W 1022 MB. RIDGE FROM HIGH TO
28N177W TO 29N172E.
.48 HOUR FORECAST HIGH NEAR 30N170W 1023 MB. RIDGE FROM HIGH TO
30N170E.

.HIGH DEVELOPING OVER FORECAST AREA.
.24 HOUR FORECAST HIGH NEAR 28N143W 1023 MB.
.48 HOUR FORECAST HIGH NEAR 27N145W 1023 MB.

.OTHERWISE WINDS INCREASING GREATER THAN 20 KT.
.24 HOUR FORECAST WINDS E TO NE 20 TO 25 KT FROM 15N TO 07N
E OF 150W.
.48 HOUR FORECAST WINDS E TO NE 20 TO 25 KT FROM 15N TO 07N
E OF 170W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS BUILDING TO HIGHER THAN 8 FT.
.24 HOUR FORECAST SEAS 8 TO 9 FT FROM 13N TO 05N E OF 155W.
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 13N TO 05N E OF 175W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ FROM 06N140W TO 07N145W TO 03N159W...AND ALSO FROM 06N165W TO
05N177W TO 07N174E. SCATTERED MODERATE TO STRONG TSTMS WITHIN 240 NM
OF LINE OF CONVERGENCE BETWEEN 174E AND 165W.

.OTHERWISE ISOLATED MODERATE TO STRONG TSTMS WITHIN A POLYGON BOUND
BY 23N151W 21N141W 11N146W 11N153W 18N156W 23N151W.

$$

.FORECASTER BEDAL. HONOLULU HI.



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