667 
FZPN40 PHFO 140318
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI AUG 14 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 14 2020.
24 HOUR FORECAST VALID 0000 UTC AUG 15 2020.
48 HOUR FORECAST VALID 0000 UTC AUG 16 2020.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 11N145W 1009 MB MOVING WNW SLOWLY. NE WINDS 20 TO 25 KT 
WITHIN 150 NM OF LOW. ISOLATED MODERATE TSTMS WITHIN 90 NM OF LOW.
.24 HOUR FORECAST LOW 12N149W 1009 MB. NE WINDS 20 TO 25 KT 
WITHIN 150 NM N SEMICIRCLE OF LOW.
.48 HOUR FORECAST LOW 13N152W 1008 MB. NE WINDS 20 TO 25 KT 
WITHIN 180 NM N SEMICIRCLE OF LOW.

.LOW 08N178E 1008 MB. TROUGH 12N179E TO LOW TO 09N170E. TROUGH 
AND LOW MOVING W 10 KT. ISOLATED MODERATE TSTMS 120 NM OF LOW AND
TROUGH E OF 175E.
.24 HOUR FORECAST LOW 09N173E 1007 MB. TROUGH 11N176E TO LOW TO 
06N169E 08N165E.
.48 HOUR FORECAST LOW 10N170E 1007 MB. TROUGH 12N170E TO LOW TO 
07N166E 09N161E. 

.TROUGH 30N161E 29N160E MOVING W SLOWLY. 
.24 HOUR FORECAST TROUGH JUST W OF AREA. S WINDS 20 TO 25 KT N OF
26N W OF 162E. 
.48 HOUR FORECAST TROUGH JUST NW OF AREA. S WINDS 20 TO 25 KT N 
OF 28N W OF 163E. 

.TROUGH 30N177E 28N175E MOVING N SLOWLY. ISOLATED MODERATE TSTMS 
WITHIN 180 NM SE OF TROUGH. 
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 14N163E 12N160E MOVING W 15 KT. SCATTERED MODERATE TSTMS
WITHIN 180 NM OF TROUGH. 
.24 HOUR FORECAST TROUGH MOVED W OF AREA. 

.NE TO E WINDS 20 TO 25 KT N OF 25N BETWEEN 147W AND 158W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.HIGH 06N164E 1011 MB MOVING W 10 KT AND DISSIPATING. 
.24 HOUR FORECAST HIGH DISSIPATED. 

.RIDGE 30N175E 24N169E 15N165E MOVING NW SLOWLY.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 8 TO 9 FT N OF 25N BETWEEN 148W AND 158W.
.24 HOUR FORECAST SEAS 8 TO 9 FT FROM 12N TO 17N BETWEEN 143W AND
149W. 
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 11N TO 17N BETWEEN 147W AND
154W. 

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA. 

.SCATTERED MODERATE TSTMS FROM 22N TO 26N BETWEEN 174E AND 168E.
ISOLATED MODERATE TSTMS FROM 21N TO 26N W OF 163E. 

.MONSOON TROUGH 12N140W TO FIRST LOW ABOVE TO 10N151W 09N165W 
07N172W 07N176W. SCATTERED MODERATE TO LOCALLY STRONG TSTMS 
WITHIN 150 NM OF MONSOON TROUGH BETWEEN 154W AND 172W. ISOLATED 
MODERATE TSTMS ELSEWHERE WITHIN 210 NM OF MONSOON TROUGH. 



$$

.HONOLULU FORECASTER.