High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 061030
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC MON JUL 06 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 06 2015.
24 HOUR FORECAST VALID 0600 UTC JUL 07 2015.
48 HOUR FORECAST VALID 0600 UTC JUL 08 2015.

.WARNINGS.

...TROPICAL STORM WARNING...
.TYPHOON NANGKA W OF FORECAST AREA 11.8N 158.7E 970 MB MOVING W 11
KT. MAXIMUM SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT. WINDS 34 KT
OR GREATER AND SEAS 12 FT OR HIGHER OVER FORECAST WATERS WITHIN 95
NM OF CENTER. WINDS 20 TO 33 KT AND SEAS 8 TO 12 FT ELSEWHERE OVER
FORECAST WATERS FROM 09N TO 20N W OF 165E. SCATTERED MODERATE TO
STRONG TSTMS FROM 08N TO 16N W OF 163E. ISOLATED MODERATE TSTMS FROM
09N TO 16N BETWEEN 168E AND 163E.
.24 HOUR FORECAST TYPHOON NANGKA FAR W OF FORECAST AREA. WINDS
DIMINISHED TO 20 KT OR LESS OVER FORECAST WATERS. SEAS 8 TO 11 FT
FROM 09N TO 19N W OF 162E.
.48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER OVER FORECAST
WATERS.

.SEE BULLETIN UNDER WMO HEADER WTPN33 PGTW ISSUED BY JTWC FOR MORE
INFORMATION ON TYPHOON NANGKA.

.SYNOPSIS AND FORECAST.

.LOW 13N140W 1007 MB MOVING W SLOWLY. TROUGH FROM LOW TO 12N145W
NEARLY STATIONARY. WINDS 20 TO 25 KT WITHIN 120 NM N QUADRANT OF
LOW. ISOLATED MODERATE TSTMS WITHIN 150 NM OF LOW...AND ELSEWHERE
WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST LOW 13N145W 1008 MB. TROUGH FROM 13N140W TO LOW TO
11N146W. WINDS 20 TO 25 KT FROM 13N TO 20N E OF 149W.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 15N153W TO 11N152W.
WINDS 20 TO 25 KT FROM 13N TO 21N BETWEEN 145W AND 153W.

.LOW 10N148W 1008 MB NEARLY STATIONARY. TROUGH FROM 12N145W TO LOW
TO 08N157W NEARLY STATIONARY. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 150 NM N SEMICIRCLE OF LOW...AND ELSEWHERE WITHIN 90 NM OF
TROUGH.
.24 HOUR FORECAST LOW 10N147W 1008 MB. TROUGH FROM 11N146W TO LOW TO
09N157W.
.48 HOUR FORECAST LOW DISSIPATED.

.LOW 09N167W 1008 MB NEARLY STATIONARY. TROUGH FROM 08N157W TO LOW
TO 08N180E NEARLY STATIONARY. SCATTERED MODERATE TO LOCALLY STRONG
TSTMS WITHIN 210 NM OF LOW AND TROUGH.
.24 HOUR FORECAST LOW 08N166W 1007 MB. TROUGH FROM 09N157W TO LOW
TO 09N180E.
.48 HOUR FORECAST LOW 08N166W 1007 MB. TROUGH FROM 08N157W TO LOW
TO 07N180E.

.FRONT FROM 30N167W TO 24N176W TO 22N175E NEARLY STATIONARY.
.24 HOUR FORECAST FRONT FROM 30N167W TO 23N179W TO 22N172E.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM 28N163W TO 24N165W MOVING WNW SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW LOW...POSSIBLE TROPICAL CYCLONE...15N140W 1006
MB. WINDS 20 TO 30 KT...AND POSSIBLY HIGHER...FROM 13N TO 22N E OF
145W.

.RIDGE FROM 30N155W TO 27N161W MOVING N SLOWLY.

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

.SEAS 8 TO 9 FT FROM 13N TO 18S E OF 145W.
.24 HOUR FORECAST SEAS 8 TO 10 FT FROM 13N TO 19N E OF 150W.
.48 HOUR FORECAST SEAS 10 TO 16 FT FROM 14N TO 19N E OF 142W. SEAS 8
TO 10 FT ELSEWHERE FROM 13N TO 21N E OF 154W.

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

.SCATTERED MODERATE TO LOCALLY STRONG TSTMS WITHIN 75 NM OF A LINE
FROM 07N140W TO 04N154W.

.MONSOON TROUGH FROM 08N180E TO 09N170E TO 11N161E. ISOLATED
MODERATE TSTMS WITHIN 60 NM OF MONSOON TROUGH E OF 176E.

$$
.FORECASTER HOUSTON. HONOLULU HI.







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