High Seas Forecast
Issued by NWS

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FZPN40 PHFO 240320
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SUN JUL 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC JUL 24 2016.
24 HOUR FORECAST VALID 0000 UTC JUL 25 2016.
48 HOUR FORECAST VALID 0000 UTC JUL 26 2016.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM DARBY 19.3N 155.3W 1006 MB MOVING W 9 KT. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. WINDS 34 KT OR GREATER WITHIN
60 NM N SEMICIRCLE...30 NM S SEMICIRCLE. SEAS 12 FT OR HIGHER
WITHIN 120 NM SEMICIRCLE...60 NM S SEMICIRCLE. WINDS 20 TO 33 KT
ELSEWHERE WITHIN 90 NM N SEMICIRCLE...60 NM S SEMICIRCLE.
SCATTERED MODERATE TSTMS WITHIN 90 NM OF SE QUADRANT.
.24 HOUR FORECAST TROPICAL STORM DARBY 21.0N 158.4W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. WINDS 34 KT OR GREATER WITHIN
45 NM N SEMICIRCLE...30 NM S SEMICIRCLE. SEAS 12 FT OR HIGHER
WITHIN 100 NM SEMICIRCLE...50 NM S SEMICIRCLE. WINDS 20 TO 33 KT
ELSEWHERE WITHIN 80 NM N SEMICIRCLE...50 NM S SEMICIRCLE.
.48 HOUR FORECAST TROPICAL DEPRESSION DARBY 23.6N 161.3W. MAXIMUM
SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR HIGHER WITHIN 75
NM SEMICIRCLE...45 NM S SEMICIRCLE. WINDS 20 TO 33 KT ELSEWHERE
WITHIN 60 NM N SEMICIRCLE...45 NM S SEMICIRCLE.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW NEAR 27.0N 164.7W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW NEAR 30.8N 167.8W.
MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST LOW DISSIPATED.

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

.SYNOPSIS AND FORECAST.

.LOW 23N170E 1011 MB NEAR STATIONARY. SCATTERED MODERATE TO STRONG
TSTMS FROM 19N TO 23N BETWEEN 168E AND 180E.
.24 HOUR FORECAST LOW 24N170E 1010 MB. TROUGH FROM LOW TO 29N172E.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH 30N170E TO 26N160E.

.WEAK LOW 24N140W 1013 MB MOVING E 10 KT AND WEAKENING.
.24 HOUR FORECAST LOW DISSIPATED. WEAK TROUGH 27N145W TO 22N146W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N175E TO 26N175E MOVING W 10 KT. SE WINDS 20 TO 25 KT N
OF 27N BETWEEN 175W AND 180E. ISOLATED MODERATE TSTMS WITHIN 120
NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH FIRST LOW AND TROUGH DESCRIBED
ABOVE.

.RIDGE 30N169E TO 25N164E TO 22N160E MOVING NW SLOWLY.

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

.EXCEPT FOR SEAS ASSOCIATED WITH T.S. DARBY...SEAS 8 TO 10 FT
FROM 17N TO 23N BETWEEN 151W AND 157W. SEAS 8 TO 12 FT N OF 26N W
OF 162E.
.24 HOUR FORECAST...EXCEPT FOR SEAS ASSOCIATED WITH T.S. DARBY...
SEAS DIMINISHED TO 8 FT OR LESS.
.48 HOUR FORECAST SEAS 8 TO 11 FT N OF 26N BETWEEN 170E AND 177E.
ALSO SEE SEAS ASSOCIATED WITH T.S. DARBY DESCRIBED ABOVE.

.SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA.

.ITCZ 07N140W TO 09N150W TO 10N160W TO 12N172W. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF ITCZ W OF 150W.

.SCATTERED MODERATE TO STRONG TSTMS FROM 03N TO 09N BETWEEN 172W
AND 174E. ISOLATED MODERATE TSTMS N OF 25N BETWEEN 175W AND 177E...
AND S OF 10N W OF 168E.

$$

.HONOLULU HI.



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