High Seas Forecast
Issued by NWS

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FZPN40 PHFO 072240
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC TUE JUL 07 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC JUL 07 2015.
24 HOUR FORECAST VALID 1800 UTC JUL 08 2015.
48 HOUR FORECAST VALID 1800 UTC JUL 09 2015.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.DEVELOPING TROPICAL CYCLONE...LOW JUST E OF FORECAST AREA
NEAR 14N138W. NE AND N WINDS 20 TO 25 KT SEAS 8 TO 9 FT BETWEEN 20N
AND 15N E OF 143W. SEE LATEST FZPN KWBC FOR MORE DETAILS WITH THIS
FEATURE.
.06 HOUR FORECAST LOW NEAR 15N140W 1004 MB...DEVELOPING TROPICAL
CYCLONE. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT OVER FORECAST WATERS
WITHIN 240 NM NW QUADRANT. SCATTERED MODERATE TO STRONG TSTMS
BETWEEN 15N AND 12N E OF 142W. WINDS AND SEAS MAY BE HIGHER
DEPENDING ON ANY TROPICAL CYCLONE DEVELOPMENT.
.24 HOUR FORECAST LOW NEAR 17N143W 1003 MB...DEVELOPING TROPICAL
CYCLONE. WINDS 20 TO 30 KT SEAS 8 TO 12 FT BETWEEN 23N AND 17N E OF
147W. WINDS AND SEAS MAY BE HIGHER DEPENDING ON ANY TROPICAL CYCLONE
DEVELOPMENT.
.48 HOUR FORECAST LOW NEAR 19N148W 1002 MB...DEVELOPING TROPICAL
CYCLONE. WINDS 20 TO 30 KT AND SEAS 8 TO 12 FT FROM 26N TO 17N
BETWEEN 152W AND 142W.WINDS AND SEAS MAY BE HIGHER DEPENDING ON ANY
TROPICAL CYCLONE DEVELOPMENT.

.LOW NEAR 11N148W 1008 MB NEARLY STATIONARY. WINDS 20 TO 25 KT SEAS
8 TO 9 FT WITHIN 120 NM OF LOW N SEMICIRCLE. NUMEROUS MODERATE TO
STRONG TSTMS WITHIN 170 NM W SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW 12N149W 1008 MB. WINDS 20 KT TO 25 KT SEAS 8
TO 9 FT WITHIN 150 NM NW QUADRANT OF LOW.
.48 HOUR FORECAST LOW DISSIPATED. WINDS DIMINISHED TO 20 KT OR
LESS...SEAS LOWERED TO 8 FT OR LESS.

.LOW NEAR 08N167W 1008 MB NEARLY STATIONARY. WINDS 20 TO 25 KT
SEAS 8 TO 9 FT WITHIN 120 NM N SEMICIRCLE. SEAS 8 TO 10 FT WITHIN
250 NM ELSEWHERE. ISOLATED MODERATE TSTMS WITHIN 130 NM W QUADRANT
OF LOW.
.24 HOUR FORECAST LOW NEAR 09N166W 1005 MB. WINDS 20 TO 25 KT SEAS
8 TO 9 FT WITHIN 120 NM N SEMICIRCLE OF LOW. SEAS 8 TO 9 FT WITHIN
200 NM S SEMICIRCLE.
.48 HOUR FORECAST LOW NEAR 11N167W 1006 MB. WINDS 20 TO 25 KT
SEAS 8 TO 9 FT WITHIN 120 NM N SEMICIRCLE OF LOW.

.LOW NEAR 07N173E 1010 MB MOVING WNW 12 KT.
.24 HOUR FORECAST LOW NEAR 09N167E 1009 MB.
.48 HOUR FORECAST LOW MOVED W OF FORECAST AREA.

.DISSIPATING FRONT 30N166W TO 25N180W NEARLY STATIONARY.
.12 HOUR FORECAST FRONT DISSIPATED.

.WEAK TROUGH 25N153W TO 20N155W MOVING W 15 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N165W TO 27N168W TO 25N170W MOVING W 10 KT AND DISSIPATING.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE 30N145W TO 28N140W NEARLY STATIONARY AND DISSIPATING.

.RIDGE 05N140W TO 00N163W. PORTION E OF 150W MOVING N 10 KT.
OTHERWISE NEARLY STATIONARY.

.WINDS ELSEWHERE OVER FORECAST WATERS... 20 KT OR LESS.

.ELSEWHERE...SEAS 8 TO 9 FT FROM 10N TO 18N W OF 162E.
.12 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LESS.

.SEAS 8 FT OR LESS OVER REST OF FORECAST AREA.

.ISOLATED CLUSTERS OF MODERATE TSTMS BETWEEN 10N AND 05N E OF 175W.
ISOLATED TSTMS BETWEEN 10N AND 05N FROM 175W TO 170E...AND FROM 16N
TO 11N W OF 170E.

.MONSOON TROUGH FROM DVLPG T.C. E OF 140W TO 12N143W TO LOW AT
11N148W TO LOW 08N167W THENCE ITCZ TO 06N178E TO LOW AT 07N173E.

$$

.FORECASTER LAU. HONOLULU HI.












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