High Seas Forecast
Issued by NWS

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FZPN40 PHFO 281105
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SUN AUG 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

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

SYNOPSIS VALID 0600 UTC AUG 28 2016.
24 HOUR FORECAST VALID 0600 UTC AUG 29 2016.
48 HOUR FORECAST VALID 0600 UTC AUG 30 2016.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM MADELINE NEAR 16.1N 140.6W 998 MB MOVING NW 07 KT.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. WINDS 34 KT OR GREATER
WITHIN 60 NM N SEMICIRCLE AND WITHIN 30 NM S SEMICIRCLE. SEAS 12
FT OR GREATER WITHIN 75 NM NW QUADRANT...60 NM NW QUADRANT AND 30
NM S SEMICIRCLE. WINDS 20 TO 33 KT AND SEAS 8 TO 12 FT ELSEWHERE
WITHIN 180 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE.SCATTERED
MODERATE TO STRONG TSTMS WITHIN 180 NM OF CENTER.
.24 HOUR FORECAST TROPICAL STORM MADELINE 17.8N 143.0W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. WINDS 34 KT OR GREATER AND SEAS
12 FT OR GREATER WITHIN 90 NM NE...60 NM SE...55 NM SW AND 80 NM
NW QUADRANTS. WINDS 20 TO 33 KT AND SEAS 8 TO 12 FT ELSEWHERE
WITHIN 180 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE.
.48 HOUR FORECAST HURRICANE MADELINE 19.4N 146.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. WINDS 34 KT OR GREATER AND SEAS
12 FT OR GREATER WITHIN 100 NM N SEMICIRCLE AND 70 NM S SEMICIRCLE.
WINDS 20 TO 33 KT AND SEAS 8 TO 12 FT ELSEWHERE WITHIN 180 NM N
SEMICIRCLE AND 120 NM S SEMICIRCLE.
.72 HOUR FORECAST TROPICAL STORM MADELINE 19.6N 150.3W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.

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

.96 HOUR FORECAST TROPICAL STORM MADELINE 19.0N 154.5W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM MADELINE 18.5N 159.0W. MAXIMUM
SUSTAINED WINDS 40 KT GUSTS 50 KT.

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

.SYNOPSIS AND FORECAST.

.LOW 13N160W 1011 MB NEARLY STATIONARY. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF CENTER.
.24 HOUR FORECAST LOW 13N160W 1010 MB.
.48 HOUR FORECAST LOW 14N161W 1011 MB.

.TROUGH 30N173W 25N180E 23N167E MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF LINE 28N173W 20N170E 16N164E.
.24 HOUR FORECAST TROUGH 27N177W 24N170E.
.48 HOUR FORECAST TROUGH 30N178W 28N172E.

.FRONT 30N162E 28N160E MOVING E 10 KT. WINDS 20 TO 25 KT N OF 28N
W OF 166E. ISOLATED MODERATE TSTMS N OF 26N W OF 168E.
.24 HOUR FORECAST FRONT 30N166E 22N160E. WINDS 20 TO 25 KT N OF
28N BETWEEN 165E AND 175E.
.48 HOUR FORECAST FRONT 30N170E 23N160E. WINDS DIMINISHED TO 20
KT OR LESS.

.RIDGE 30N161W 19N180W 13N166E 14N160E NEARLY STATIONARY.

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

.SEAS 8 TO 10 FT W OF LINE 30N164E 23N160E.
.24 HOUR FORECAST SEAS 8 TO 10 FT W OF LINE 30N170E 20N160E.
.48 HOUR FORECAST SEAS 8 TO 11 FT W OF LINE 30N168E 20N168E
18N160E.

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

.MONSOON TROUGH 15N142W 12N150W 13N158W...AND FROM 12N161W TO
06N170W. ISOLATED MODERATE TSTMS WITHIN 180 NM OF MONSOON TROUGH.

.SCATTERED MODERATE TSTMS FROM 10N TO 15N BETWEEN 170E AND 177E.
ISOLATED MODERATE TSTMS FROM 03N TO 09N W OF 172E.

$$

.FORECASTER POWELL. HONOLULU HI.



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