High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 311630
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI JUL 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC JUL 31 2015.
24 HOUR FORECAST VALID 1200 UTC AUG 01 2015.
48 HOUR FORECAST VALID 1200 UTC AUG 02 2015.

.WARNINGS.

...HURRICANE WARNING...
.24 HOUR FORECAST HURRICANE GUILLERMO JUST E OF AREA NEAR 13.6N
137.8W. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT FROM 18N TO 11N E OF
141W.
.36 HOUR FORECAST HURRICANE GUILLERMO NEAR 14.3N 140.4W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTING 120 KT. WINDS 34 KT OR GREATER AND
SEAS 15 FT OR HIGHER WITHIN 140 NM NE QUADRANT...110 NM SE
QUADRANT...80 NM SW QUADRANT...120 NM NW QUADRANT. WINDS 20 TO 33 KT
AND SEAS 8 TO 15 FT ELSEWHERE WITHIN 240 NM N SEMICIRCLE AND 150 NM
S SEMICIRCLE.
.48 HOUR FORECAST HURRICANE GUILLERMO NEAR 15.0N 142.4W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTING 110 KT. WINDS 34 KT OR GREATER AND
SEAS 15 FT OR HIGHER WITHIN 140 NM NE QUADRANT...110 NM SE
QUADRANT...80 NM SW QUADRANT...120 NM NW QUADRANT. WINDS 20 TO 33 KT
AND SEAS 8 TO 15 FT ELSEWHERE WITHIN 300 NM N SEMICIRCLE AND 150 NM
S SEMICIRCLE.
.EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY.
.72 HOUR FORECAST HURRICANE GUILLERMO NEAR 16.3N 145.4W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTING 85 KT.
.96 HOUR FORECAST TROPICAL STORM GUILLERMO NEAR 17.5N 148.3W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTING 75 KT.
.120 HOUR FORECAST TROPICAL STORM GUILLERMO NEAR 18.5N 152.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTING 60 KT.

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

.SYNOPSIS AND FORECAST.

.LOW NEAR 06N171E 1005 MB NEARLY STATIONARY. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 360 NM OF LOW.
.24 HOUR FORECAST LOW DISSIPATED.

.TROUGH 13N146W 18N145W 21N143W.
.24 HOUR FORECAST TROUGH 14N151W 19N150W.
.48 HOUR FORECAST TROUGH 14N155W 19N154W.

.TROUGH 07N157W 11N158W 15N158W. SCATTERED MODERATE TO STRONG TSTMS
BOUNDED BY 07N157W 08N143W 03N143W 04N155W 00N162W 00N169W 07N169W
07N157W.
.24 HOUR FORECAST TROUGH 09N166W 12N164W 16N163W.
.48 HOUR FORECAST TROUGH 08N172W 15N170W.

.TROUGH 16N173W 23N174W 30N171W. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 480 NM SE OF TROUGH. ISOLATED MODERATE TSTMS ELSEWHERE N OF
11N BETWEEN 177W AND 163W.
.24 HOUR FORECAST TROUGH 19N179W 15N177W 30N173W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.WINDS 20 TO 25 KT BOUNDED BY 22N144W 18N141W 16N141W 11N155W
11N162W 17N162W 20N156W 22N144W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 12N BETWEEN 167W AND
161W.
.48 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.SEAS 8 TO 10 FT BOUNDED BY 22N144W 18N141W 16N141W 11N155W 11N162W
17N162W 20N156W 22N144W.
.24 HOUR FORECAST SEAS 8 TO 10 FT FROM 17N TO 12N BETWEEN 167W AND
161W.
.48 HOUR FORECAST SEAS SUBSIDED TO LESS THAN 8 FT.

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

.ISOLATED MODERATE TSTMS BOUNDED BY 20N160E 20N164E 11N168E 05N179W
00N177W 00N160E 20N160E.

$$
.HONOLULU HI.






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