High Seas Forecast
Issued by NWS

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964
FZPN40 PHFO 152301 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC TUE AUG 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC AUG 15 2017.
24 HOUR FORECAST VALID 1800 UTC AUG 16 2017.
48 HOUR FORECAST VALID 1800 UTC AUG 17 2017.

.WARNINGS.

...HURRICANE WARNING...
.TYPHOON BANYAN 29.8N 162.9E 977 MB MOVING NNE 14 KT. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. WINDS 34 KT OR GREATER
WITHIN 65 NM OF CENTER. SEAS 12 FT OR GREATER WITHIN 180
NM OF CENTER. WINDS 20 TO 33 KT AND SEAS 8 TO 12 FT ELSEWHERE
N OF 27N BETWEEN 161E AND 167E. SCATTERED STRONG TSTMS N OF 28N
BETWEEN 162E AND 165E.
.24 HOUR FORECAST TYPHOON BANYAN MOVED WELL N OF AREA. ASSOCIATED
WINDS DIMINISHED TO 20 KT OR LESS AND SEAS 8 FT OR LESS OVER
FORECAST WATERS.

.SEE WTPN31 PGTW FOR ADDITIONAL INFORMATION.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 14N141W TO LOW 13N142W 1008 MB TO LOW 10N148W 1008 MB
TO 09N150W. TROUGH AND LOWS MOVING NW SLOWLY. WINDS 2O TO 25 KT
WITHIN 90 NM N OF TROUGH. SCATTERED MODERATE TSTMS WITHIN
120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 13N140W TO LOW 13N144W 1010 MB TO
LOW 11N147W 1008 MB TO 09N151W. WINDS 20 TO 25 KT WITHIN 120 NM N
OF TROUGH...AND WITHIN 60 NM S OF TROUGH.
.48 HOUR FORECAST TROUGH FROM 13N142W TO LOW 13N147W 1008 MB TO
10N153W. WINDS 20 TO 25 KT WITHIN 90 NM OF TROUGH.

.TROUGH FROM 13N172E TO 09N166E TO 02N161E MOVING MOVING W 15 KT.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 240 NM E OF TROUGH...
AND WITHIN 120 NM W OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 12N163E TO 08N160E.
.48 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.RIDGE FROM 30N177E TO 24N167E TO 20N160E MOVING N 10 KT.

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

.SCATTERED MODERATE TSTMS FROM 10N TO 16N W OF 161E. ISOLATED
MODERATE TSTMS FROM 26N TO 28N BETWEEN 172W AND 174W.

.ITCZ FROM 09N152W TO 10N166W TO 06N176W. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF ITCZ...EXCEPT WITHIN
240 NM S OF ITCZ BETWEEN 166W AND 172W.

$$

.FORECASTER BIRCHARD. HONOLULU HI.



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