High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 281040
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC FRI JUL 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 28 2017.
24 HOUR FORECAST VALID 0600 UTC JUL 29 2017.
48 HOUR FORECAST VALID 0600 UTC JUL 30 2017.

.WARNINGS.

...GALE WARNING...
.LOW 28N175E 1012 MB MOVING WNW 10 KT. TROUGH FROM LOW TO 28N165E TO
27N160E TO 28N164E MOVING N SLOWLY. WINDS 20 TO 25 KT...SEAS 8 TO 12
FT W OF 162E BETWEEN 24N AND 28N...AND WITHIN 180 NM NE SEMICIRCLE
OF LOW. ISOLATED MODERATE TSTMS N OF A LINE FROM 27N177W TO 20N160E.
.24 HOUR FORECAST LOW MOVED N OF AREA. NEW LOW 28N162E 1005 MB.
TROUGH FROM 30N167E TO LOW TO 27N160E. WINDS 30 TO 35 KT...SEAS 12
TO 16 KT WITHIN 180 NM SE QUADRANT OF LOW. WINDS 20 TO 30 KT
ELSEWHERE BETWEEN 25N AND 30N FROM 161E TO 165E. SEAS 8 TO 12 FT
ELSEWHERE W OF 167E N OF 21N.
.48 HOUR FORECAST LOW MOVED N OF AREA. TROUGH FROM 30N165E TO
27N160E. WINDS 30 TO 35 KT...SEAS 12 TO 18 FT N OF 27N BETWEEN 168E
AND 170E. WINDS 20 TO 30 KT ELSEWHERE IN AREA BOUNDED BY 30N168E
30N172E 25N170E 23N160E 25N160E 30N168E. SEAS 8 TO 12 FT ELSEWHERE N
OF LINE FROM 28N173E TO 26N171E TO 21N160E.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 18N149W TO 16N148W TO 14N147W MOVING W 10 KT. WINDS 20
TO 25 KT...SEAS 8 TO 9 FT FROM 18N TO 20N BETWEEN 147W AND 149W.
.24 HOUR FORECAST TROUGH FROM 17N151W TO 14N152W. WINDS DIMINISHED
TO 20 KT OR LESS. SEAS SUBSIDED TO 8 FT OR LESS.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N174E TO 21N179E TO 20N167E TO 13N160E MOVING W SLOWLY.

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

.ITCZ FROM 08N140W TO 07N145W TO 08N156W TO 07N167W TO 03N172E.
ISOLATED MODERATE TSTMS WITHIN 180 NM OF ITCZ...AND FROM 12N TO 14N
BETWEEN 152W AND 167W.

.ISOLATED MODERATE TSTMS W OF 172E BETWEEN 01N AND 07N...AND FROM
07N TO 12N BETWEEN 165E AND 171E.

$$

.HONOLULU HI.



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