High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 040430
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC SAT JUL 04 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 04 2015.
24 HOUR FORECAST VALID 0000 UTC JUL 05 2015.
48 HOUR FORECAST VALID 0000 UTC JUL 06 2015.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM NANGKA 9.8N 169.7E 993 MB MOVING WNW 8 KT.
TROUGH FROM 11N160E TO T.D. TO LOW 09N163W NEARLY STATIONARY.
MAXIMUM SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. WINDS 34 KT OR
GREATER SEAS 12 FT OR HIGHER WITHIN 50 MILES OF CENTER. WINDS 20 TO
33 KT SEAS 8 TO 12 FT ELSEWHERE WITHIN WITHIN 240 NM OF CENTER.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 120 NM OF CENTER.
.24 HOUR FORECAST TROPICAL STORM NANGKA 10.7N 165.2E. MAXIMUM
SUSTAINED WINDS 55 KT WITH GUSTS TO 70 KT. WINDS 34 KT OR GREATER
AND SEAS 12 FT OR HIGHER WITHIN 95 NM OF CENTER. WINDS 20 TO 33 KT
ELSEWHERE WITHIN 120 NM S SEMICIRCLE AND FROM 11N TO 21N W OF 168E.
SEAS 8 TO 12 FT ELSEWHERE FROM 08N TO 21N W OF 169E.
.48 HOUR FORECAST TYPHOON NANGKA 11.9N 160.5E. MAXIMUM
SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT. WINDS 34 KT OR GREATER
AND SEAS 12 FT OR HIGHER WITHIN 110 NM OF CENTER. WINDS 20 TO 33 KT
ELSEWHERE FROM 08N TO 19N W OF 164E.  SEAS 8 TO 12 FT FROM 08N TO
22N W OF 166E.

.SYNOPSIS AND FORECAST.

.LOW 09N163W 1007 MB MOVING W SLOWLY. TROUGH FROM 09N170E TO LOW TO
LOW 09N149W NEARLY STATIONARY. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 180 NM N AND E QUADRANTS OF LOW AND FROM 03N TO 07N BETWEEN
166W AND 155W.
.24 HOUR FORECAST LOW 09N165W 1009 MB.
.48 HOUR FORECAST LOW DISSIPATED.

.LOW 09N149W 1006 MB NEARLY STATIONARY. TROUGH FROM 09N163W TO LOW
TO 12N140W NEARLY STATIONARY. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 90 NM S QUADRANT AND 180 E QUADRANT OF LOW AND FROM 03N TO
06N BETWEEN 158W AND 149W. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN
120 NM OF TROUGH E OF 145W.
.24 HOUR FORECAST LOW 10N148W 1006 MB.
.48 HOUR FORECAST LOW 10N147W 1006 MB.

.WEAKENING FRONT FROM 30N157W TO 22N164W MOVING E SLOWLY.
.24 HOUR FORECAST FRONT DISSIPATED.

.12 HOUR FORECAST FRONT ENTERING FORECAST AREA FROM 30N173W TO
28N180E.
.24 HOUR FORECAST FRONT FROM 30N170W TO 25N178E.
.48 HOUR FORECAST FRONT FROM 30N167W TO 25N177W TO 23N174E.

.48 HOUR FORECAST POSSIBLE TROPICAL CYCLONE JUST EAST OF AREA NEAR
13N139W. REFER TO HIGH SEAS FORECAST FZPN03 KNHC.

.RIDGE FROM 30N165E TO 26N177E TO 26N171W NEARLY STATIONARY.

.RIDGE FROM 30N149W TO 20N162W NEARLY STATIONARY.

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

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

$$
.FORECASTER TANABE. HONOLULU HI.





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