High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 211601 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI JUL 21 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC JUL 21 2017.
24 HOUR FORECAST VALID 1200 UTC JUL 22 2017.
48 HOUR FORECAST VALID 1200 UTC JUL 23 2017.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM FERNANDA 18.6N 143.6W 1002 MB AT 21/1500Z MOVING
W 10 KT. MAXIMUM SUSTAINED WINDS 40 KT G 50 KT. WINDS 34 KT OR
GREATER WITHIN 70 NM NE QUADRANT...30 NM SE QUADRANT...20 NM SW
QUADRANT...70 NM NW QUADRANT. WINDS 20 TO 33 KT ELSEWHERE WITHIN
210 NM NE SEMICIRCLE...90 NM SW SEMICIRCLE. SEAS 12 FT OR GREATER
WITHIN 140 NM NE QUADRANT...30 NM SE QUADRANT...80 NM SW
QUADRANT...140 NM NW QUADRANT. SEAS 8 TO 12 FT ELSEWHERE FROM
25N TO 15N E OF 153W. ISOLATED MODERATE TSTMS WITHIN 270 NM
OF CENTER NE QUADRANT...60 NM ELSEWHERE.
.24 HOUR FORECAST TROPICAL DEPRESSION FERNANDA NEAR 19.5N 146.7W
MAXIMUM SUSTAINED WIND 30 KT G 40 KT. WINDS 20 TO 30 KT WITHIN 180
NM OF CENTER N SEMICIRCLE...60 NM S SEMICIRCLE. SEAS 12 FT OR
GREATER WITHIN 120 NM NE QUADRANT...60 NM SE QUADRANT...90 NM SW
QUADRANT...120 NM NW QUADRANT. SEAS 8 TO 12 FT ELSEWHERE FROM 24N
TO 16N BETWEEN 157W AND 142W.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW NEAR 20.7N 150.7W.
MAXIMUM SUSTAINED WINDS 25 KT G 35 KT. WINDS 20 TO 25 KT WITHIN
180 NM N SEMICIRCLE...60 NM S SEMICIRCLE. SEAS 12 FT OR GREATER
WITHIN 90 NM N SEMICIRCLE...60 NM S SEMICIRCLE. SEAS 8 TO 12 FT
ELSEWHERE FROM 24N TO 16N BETWEEN 157W AND 152W.
.72 HOUR OUTLOOK POST-TROPICAL REMNANT LOW NEAR 22.1N 155.9W. .96
HOUR OUTLOOK LOW DISSIPATED.

FORECAST WINDS AROUND TROPICAL CYCLONES SHOULD BE USED WITH
CAUTION DUE TO FORECAST UNCERTAINTY.

...TROPICAL STORM WARNING...
.TROPICAL STORM KULAP NEAR 28.0N 176.3E MOVING NNW 17 KT. MAXIMUM
SUSTAINED WINDS 35 KT G 45 KT. WINDS 34 KT OR GREATER WITHIN
140 NM NE QUADRANT...110 NM SE QUADRANT...45 NM SE QUADRANT...
110 NM NW QUADRANT. WINDS 20 TO 33 KT ELSEWHERE WITHIN 480 NM
N SEMICIRCLE AND 300 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN
300 NM NE QUADRANT...150 NM SE QUADRANT...180 NM SW QUADRANT...
270 NM NW QUADRANT. SEAS 8 TO 12 FT ELSEWHERE BOUNDED BY 30N160E
30N175W 23N178W 20N170W 26N160E 30N160E. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 360 NM OF CENTER NE SEMICIRCLE. ISOLATED
MODERATE TSTMS WITHIN 240 NM OF CENTER SW SEMICIRCLE.
.24 HOUR FORECAST TROPICAL STORM KULAP JUST N OF AREA NEAR 30.3N
170.1E. MAXIMUM SUSTAINED WINDS 50 KT G 65 KT. WINDS 34 KT OR
GREATER WITHIN 60 NM OF CENTER N SEMICIRCLE...50 NM OF CENTER S
SEMICIRCLE. WINDS 20 TO 33 KT ELSEWHERE WITHIN 240 NM OF CENTER W
SEMICIRCLE...120 NM E SEMICIRCLE. SEAS 8 TO 12 FT N OF 25N W OF
179E.
.48 HOUR FORECAST TROPICAL STORM KULAP JUST N OF FCST AREA
NEAR 31.1N 166.0E. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 65 KT.
WINDS 34 KT OR GREATER WITHIN 120 NM NE QUADRANT...90 NM SE
QUADRANT...30 NM SW QUADRANT...75 NM NW QUADRANT. WINDS 20 TO 33
KT ELSEWHERE OVER FORECAST WATERS WITHIN 180 NM OF CENTER. SEAS 8
TO 12 FT NW OF A LINE FROM 30N171E TO 25N161E. .72 HOUR FORECAST
TROPICAL STORM KULAP FAR N OF AREA.

FORECAST WINDS AROUND TROPICAL CYCLONES SHOULD BE USED WITH
CAUTION DUE TO FORECAST UNCERTAINTY.

.SYNOPSIS AND FORECAST.

.TROPICAL STORM NORU W OF AREA. WIND SE 20 TO 30 KT N OF 25N W OF
164E. ASSOCIATED SEAS INCLUDED WITH TROPICAL STORM KULAP. ISOLATED
MODERATE TSTMS W OF A LINE FROM 29N160E TO 22N170E.
.24 HOUR FORECAST TROPICAL STORM NORU FAR W OF AREA. WINDS
DIMINISHED TO 20 KT OR LESS.

.SEAS 8 TO 9 FT S OF 02N E OF 170W.
.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 02N E OF 150W.
.48 HOUR FORECAST SEAS SUBSIDED TO LESS THAN 8 FT.

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

.ITCZ 10N143W 05N152W 05N160W 07N170W 06N179W 04N170E 03N160E.
ISOLATED MODERATE TO STRONG TSTMS WITHIN 360 NM OF ITCZ W OF 170W.
ISOLATED MODERATE TSTMS WITHIN 60 NM OF ITCZ E OF 170W.

$$
.HONOLULU FORECASTER.


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