High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 301045
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC THU JUL 30 2015

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 30 2015.
24 HOUR FORECAST VALID 0600 UTC JUL 31 2015.
48 HOUR FORECAST VALID 0600 UTC AUG 01 2015.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION EIGHT-E JUST E OF FCST AREA NEAR 16.5N 137.9W
AT 0600Z MOVING W 13 KT. MAXIMUM SUSTAINED WINDS 25 KT WITH GUSTS TO
35 KT. WINDS 20 TO 25 KT AND SEAS 9 TO 10 FT WITHIN 240 NM OF LOW N
SEMICIRCLE. ISOLATED MODERATE TSTMS WITHIN 240 NM NE QUADRANT.
.24 HOUR FORECAST POST TROPICAL/REMNANT LOW EIGHT-E NEAR 16.0N
143.8W. MAXIMUM SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT. WINDS 20
TO 25 KT AND SEAS 9 TO 10 FT WITHIN 240 NM OF LOW N SEMICIRCLE.
.48 HOUR FORECAST SYSTEM DISSIPATED.

.TROPICAL DEPRESSION 13W JUST W OF FORECAST AREA NEAR 13.6N 159.9W
AT 0600Z MOVING NW 14 KT. MAXIMUM SUSTAINED WINDS 30 KT WITH GUSTS
TO 40 KT. WINDS 20 TO 30 KT AND SEAS 9 TO 11 FT WITHIN 120 NM OF
TROPICAL DEPRESSION. SCATTERED STRONG TSTMS FROM 12N TO 17N W OF
164E.
.24 HOUR FORECAST TROPICAL DEPRESSION 13W MOVED FAR W OF FORECAST
AREA. WINDS DECREASED TO 20 KT OR LESS AND SEAS DIMINISHED TO 8 FT
OR LESS WITHIN FORECAST AREA.

.LOW NEAR 10N150W 1007 MB MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF LOW.
.24 HOUR FORECAST LOW NEAR 10N155W 1008 MB. WINDS 20 TO 25 KT WITHIN
240 NM OF LOW N SEMICIRCLE.
.48 HOUR FORECAST LOW NEAR 11N162W 1008 MB. WINDS 20 TO 25 KT AND
SEAS 9 TO 10 FT WITHIN 360 NM OF LOW N SEMICIRCLE.

.LOW NEAR 06N171E 1005 MB NEARLY STATIONARY. WINDS 20 TO 25 KT
WITHIN 180 NM S SEMICIRCLE OF LOW. SCATTERED MODERATE TO STRONG
TSTMS S OF 10N W OF 177E.
.24 HOUR FORECAST LOW NEAR 04N172E 1005 MB. WINDS 20 TO 25 KT WITHIN
180 NM S SEMICIRCLE OF LOW.
.48 HOUR FORECAST LOW DISSIPATED. WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH 14N167W 17N168W 21N166W. ISOLATED MODERATE TSTMS WITHIN 180
NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 21N172W 13N174W.
.48 HOUR FORECAST TROUGH 19N174W 12N176W.

.TROUGH 22N175W 26N173W 30N171W MOVING NW 10 KT. ISOLATED MODERATE
TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 30N173W 26N177W.
.48 HOUR FORECAST TROUGH 30N175W 24N177W.

.72 HOUR FORECAST HURRICANE GUILLERMO NEAR 14.5N 141.6W. MAXIMUM
SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT.
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH
DAY.
.96 HOUR FORECAST HURRICANE GUILLERMO NEAR 16.3N 144.3W. MAXIMUM
SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT.
.120 HOUR FORECAST TROPICAL STORM GUILLERMO NEAR 18.0N 146.5W.
MAXIMUM SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT.

.ITCZ 10N160W 11N165W 08N174W 09N180W. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF ITCZ.

.ISOLATED MODERATE TSTMS WITHIN 90 NM OF LINE 07N147W 01N161W.

$$
.FORECASTER POWELL. HONOLULU HI.




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