High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 231137 CCB
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SAT JUL 23 2016

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 23 2016.
24 HOUR FORECAST VALID 0600 UTC JUL 24 2016.
48 HOUR FORECAST VALID 0600 UTC JUL 25 2016.

.WARNINGS.

...TROPICAL STORM WARNING...

.TROPICAL STORM DARBY 18.7N 152.6W 1000 MB MOVING W 10 KT. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. WINDS 34 KT OR GREATER WITHIN 110
NM N SEMICIRCLE...80 NM SE QUADRANT...40 NM SW QUADRANT. SEAS 12 FT
OR HIGHER WITHIN 310 NM NW QUADRANT...270 NM NE QUADRANT AND 120 NM
S SEMICIRCLE. WINDS 20 TO 33 KT ELSEWHERE WITHIN 100 NM OF CENTER.
SCATTERED MODERATE TSTMS WITHIN 90 NM OF CENTER SW SEMICIRCLE.
.24 HOUR FORECAST TROPICAL STORM DARBY 19.8N 155.7W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. WINDS 34 KT OR GREATER WITHIN 80
NM N SEMICIRCLE AND 35 NM S SEMICIRCLE. SEAS 12 FT OR HIGHER WITHIN
240 NM N SEMICIRCLE AND 90 NM S SEMICIRCLE. WINDS 20 TO 33 KT
ELSEWHERE WITHIN 90 NM OF CENTER.
.48 HOUR FORECAST TROPICAL STORM DARBY 21.7N 158.0W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT. WINDS 34 KT OR GREATER WITHIN 50
NM N SEMICIRCLE AND 30 NM S SEMICIRCLE. SEAS 12 FT OR HIGHER WITHIN
180 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE. WINDS 20 TO 33 KT
ELSEWHERE WITHIN 75 NM OF CENTER.
.72 HOUR FORECAST TROPICAL STORM DARBY NEAR 24.3N 160.8W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT.
.96 HOUR FORECAST TROPICAL STORM DARBY NEAR 27.6N 163.7W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST TROPICAL STORM DARBY NEAR 31.9N 166.3W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

FORECAST WINDS NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH
CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY.

.SYNOPSIS AND FORECAST.

.TROUGH 29N171E 24N171E NEARLY STATIONARY.
.24 HOUR FORECAST NEW LOW 24N171E 1010 MB. TROUGH 30N176E THROUGH
LOW TO 20N169E. SE WINDS 20 TO 25 KT N OF 27N BETWEEN 177W AND 178E.
.48 HOUR FORECAST LOW 24N171E 1009 MB. TROUGH 30N170E THROUGH LOW TO
18N167E. SE WINDS 20 TO 25 KT N OF 25N BETWEEN 177E AND 171E.

.TROUGH 29N180W 23N178E MOVING W 10KT. SE WINDS 20 TO 25 KT N OF 28N
BETWEEN 173W AND 177W. SCATTERED MODERATE TSTMS WITHIN 60 NM OF LINE
30N177W 25N175W.
.24 HOUR FORECAST TROUGH MERGED WITH LOW AND TROUGH DESCRIBED ABOVE.

.TROUGH JUST W OF AREA. S WINDS 20 TO 25 KT NW OF LINE 30N162E
18N160E.
.24 HOUR FORECAST TROUGH JUST W OF AREA. S WINDS 20 TO 25 KT N OF
29N W OF 162E.
.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH 30N151W 26N152W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 30N154W 26N156W.
.TROUGH MERGED WITH T.S. DARBY.

.24 HOUR FORECAST NEW TROUGH 26N141W 21N141W. E WINDS 20 TO 25 KT
FROM 27N TO 25N W OF 143W.
.48 HOUR FORECAST 27N147W 22N147W. WINDS DIMINISHED TO 20 KT OR LESS.

.RIDGE 30N168E 25N164E 21N160E MOVING NW SLOWLY.

.EXCEPT FOR SEAS ASSOCIATED WITH T.S. DARBY... SEAS 8 TO 12 FT
BOUNDED BY 30N180W 30N167W 20N148W 12N155W 30N180W. SEAS 8 TO 9 FT
NW OF LINE 30N163E 28N160E.
.24 HOUR FORECAST...EXCEPT FOR SEAS ASSOCIATED WITH T.S.DARBY...SEAS
8 TO 12 FT BOUNDED BY 25N155W 20N150W 18N153W 23N160W 25N155W. SEAS
8 TO 12 FT NW OF LINE 30N163E 26N160E. SEAS 8 TO 9 FT N OF 25N E OF
144W AND BOUNDED BY 30N177E 30N175E 22N168W 21N173W 30N1773.
.48 HOUR FORECAST...EXCEPT FOR SEAS ASSOCIATED WITH T.S.DARBY...SEAS
8 TO 12 FT FROM 27N TO 20N BETWEEN 155W AND 160W. SEAS 8 TO 10 FT N
OF 24N BETWEEN 180W AND 170E.

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

.ISOLATED MODERATE TSTMS FROM 06N TO 09N BETWEEN 150W AND 160W...
FROM 04N TO 09N BETWEEN 160W AND 170W...AND S OF 10N W OF 170E.

$$
.HONOLULU HI.


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