High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 010430
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SAT AUG 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 01 2015.
24 HOUR FORECAST VALID 0000 UTC AUG 02 2015.
48 HOUR FORECAST VALID 0000 UTC AUG 03 2015.

.WARNINGS.

...HURRICANE WARNING...
.24 HOUR FORECAST HURRICANE GUILLERMO NEAR 14.3N 141.1W. MAXIMUM
SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM NE...100 NM SE...60 NM SW...90 NM NW. SEAS 12 FT OR
GREATER WITHIN 270 NM NE QUADRANT...210 NM SE QUADRANT...180 NM SW
QUADRANT ...AND 210 NM NW QUADRANT WITH SEAS TO 37 FT. ELSEWHERE
WITHIN 300 NM NE AND 180 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8
TO 11 FT.
.48 HOUR FORECAST HURRICANE GUILLERMO NEAR 15.8N 145.0W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS
WITHIN 110 NM NE...100 NM SE...60 NM SW...90 NM NW. SEAS 12 FT OR
GREATER WITHIN 270 NM NE QUADRANT...210 NM SE QUADRANT...180 NM SW
QUADRANT ...AND 210 NM NW QUADRANT WITH SEAS TO 37 FT. ELSEWHERE
WITHIN 300 NM NE AND 180 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8
TO 11 FT.

EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.

.72 HOUR FORECAST HURRICANE GUILLERMO NEAR 17.0N 147.5W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GUILLERMO NEAR 19.0N 150.5W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST TROPICAL STORM GUILLERMO NEAR 20.5N 153.5W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 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 16N149W 1008 MB TROUGH 18N149W THROUGH LOW TO 11N145W. LOW AND
TROUGH MOVING SW SLOWLY. SEAS 8 TO 9 FT FROM 23N TO 15N BETWEEN 145W
AND 151W.
.24 HOUR FORECAST LOW 10N152W 1008 MB. TROUGH 16N154W THROUGH LOW
TO 10N151W. SEAS DIMINISHED TO LESS THAN 8 FT.
.48 HOUR FORECAST LOW 12N159W 1008 MB. TROUGH 14N160W THROUGH LOW TO
10N157W.

.LOW 12N162W 1008 MB. TROUGH FROM LOW TO 05N165W. LOW AND TROUGH
MOVING W 15 KT. WINDS 20 TO 25 KT WITHIN 180 NM OF LOW N QUADRANT.
SEAS 8 TO 10 FT FROM 18N TO 11N BETWEEN 155W AND 164W. SCATTERED
MODERATE TSTMS BOUNDED BY 14N163W 11N156W 08N162W 12N166W 14N163W.
.24 HOUR FORECAST LOW 11N169W 1008 MB. TROUGH 14N168W THROUGH LOW TO
08N172W. WINDS DIMINISHED TO 20 KT OR LESS. SEAS 8 TO 9 FT FROM 17N
TO 12N BETWEEN 163W AND 169W.
.48 HOUR FORECAST LOW 13N174W 1008 MB. TROUGH 16N174W THROUGH LOW TO
09N177W. SEAS DIMINISHED TO LESS THAN 8 FT.

.TROUGH 00N175E 05N170E 09N160E. SCATTERED MODERATE TSTMS S OF 12S
W OF 180W.
.24 HOUR FORECAST TROUGH 00N177E TO 09N160E.
.48 HOUR FORECAST TROUGH 00N176E TO 08N160E.

.TROUGH 30N174W 22N176W 14N176W MOVING NW SLOWLY. ISOLATED STRONG
TSTMS WITHIN 200 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH 30N175W 20N180W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.ITCZ 05N140W 06N150W 07N156W MOVING SW 15 KT. SCATTERED MODERATE
TSTMS WITHIN 90 NM OF ITCZ.

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

$$
.HONOLULU HI.





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