High Seas Forecast
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000
FZPN02 KWBC 202325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC THU JUL 20 2017

CCODE/2:31:12:11:00/AOW+POR+AOE/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

SYNOPSIS VALID 1800 UTC JUL 20.
24 HOUR FORECAST VALID 1800 UTC JUL 21.
48 HOUR FORECAST VALID 1800 UTC JUL 22.

.WARNINGS.

...GALE WARNING...
.FROM 30N TO 33N BETWEEN 174W AND 172E WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.24 HOUR FORECAST LOW 30N173E 1000 MB. WITHIN 300 NM N
SEMICIRCLE WINDS 25 TO 40 KT. SEAS 12 TO 20 FT. S OF 36N BETWEEN
167E AND 180W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 30N167E 997 MB. WITHIN 240 NM N SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 12 TO 20 FT. ELSEWHERE FROM 30N TO 37N
BETWEEN 162E AND 172E WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 53.92N 168.03W IS IN A STATE OF UNREST.
MARINERS TRAVELING IN THE VICINITY OF BOGOSLOF VOLCANO ARE URGED
TO EXERCISE CAUTION. IF MARINERS ENCOUNTER ANY VOLCANIC
ASH...REPORT THE OBSERVATION TO THE OCEAN PREDICTION CENTER BY
CALLING 301-683-1520.

.FROM 32N TO 40N BETWEEN 120W AND 125W WINDS 20 TO 30 KT. SEAS
TO 9 FT.
.24 HOUR FORECAST FROM 32N TO 40N BETWEEN 120W AND 125W WINDS 20
TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 32N TO 43N BETWEEN 121W AND 128W WINDS 20
TO 30 KT. SEAS TO 10 FT.

.LOW 56N149W 1000 MB DRIFTING SE. FRONT EXTENDS FROM 57N150W TO
55N143W TO 47N137W TO 43N140W. WITHIN 180 NM NE AND E OF
FRONT...ALSO WITHIN 300 NM N SEMICIRCLE WINDS 20 TO 30 KT. SEAS
TO 10 FT. FROM 41N TO 44N BETWEEN 150W AND 162W WINDS TO 25 KT.
SEAS TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED WITH NEW LOW FORMED NEAR
52N142W 1000 MB. FRONT WILL EXTEND FROM 53N158W TO 56N150W TO
54N140W TO 52N134W TO 47N129W. WITHIN 180 NM N AND NE OF
FRONT...ALSO FROM 42N TO 52N BETWEEN 130W AND 143W WINDS 20 TO
30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 55N141W 1006 MB. WITHIN 300 NM S AND SE
QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.

.S OF 33N W OF 163E WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS MOVED W OF AREA.

.LOW 50N173W 1018 MB MOVING SE 20 KT. 45N TO 49N BETWEEN 171W
AND 180W WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 46N162W 1010 MB. FROM 41N TO 45N BETWEEN
156W AND 167W WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 46N153W 1014 MB. FORECAST CONDITIONS
DIMINISHED.

.48 HOUR FORECAST W OF A LINE FROM 60N180W TO 57N180W TO 49N160E
WINDS TO 25 KT. SEAS LESS THAN 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 39N TO 49N W
OF 169W...ALSO FROM 40N TO 47N BETWEEN 144W AND 163W...AND N OF
49N BETWEEN 180W AND 173E.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 48N W OF 180W...ALSO
FROM 40N TO 44N BETWEEN 154W AND 164W...AND FROM 51N TO 54N
BETWEEN 153W AND 158W.
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 59N180W TO 50N178E
TO 41N164E...ALSO FROM 40N TO 46N BETWEEN 141W AND 155W...AND
FROM 50N TO 54N BETWEEN 151W AND 158W.

.HIGH 41N178W 1031 MB MOVING W 10 KT.
.24 HOUR FORECAST HIGH 42N171E 1029 MB.
.48 HOUR FORECAST HIGH 43N167E 1026 MB.

.HIGH 58N179W 1019 MB MOVING SE 5 KT.
.24 HOUR FORECAST HIGH 56N177W 1022 MB.
.48 HOUR FORECAST HIGH 51N177W 1024 MB.

.24 HOUR FORECAST HIGH 34N163W 1036 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 33N136W 1027 MB.
.48 HOUR FORECAST HIGH 33N139W 1027 MB.

.FORECASTER SHAW. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1800 UTC THU JUL 20.
24 HOUR FORECAST VALID 1800 UTC FRI JUL 21.
48 HOUR FORECAST VALID 1800 UTC SAT JUL 22.

.WARNINGS.

.TROPICAL STORM GREG NEAR 14.2N 116.4W 1003 MB AT 2100 UTC JUL
20 MOVING W OR 275 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N
SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 90 NM N SEMICIRCLE...60
NM SE AND 30 NM SW QUADRANTS WITH SEAS TO 18 FT. ELSEWHERE
WITHIN 90 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER OF AREA FROM 11N TO 18N BETWEEN 111W AND 120W WINDS 20
KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM GREG NEAR 14.9N 119.9W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 60 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE. SEAS 12 FT OR
GREATER WITHIN 150 NM NW AND 90 NM SE SEMICIRCLE WITH SEAS TO 21
FT. ELSEWHERE WITHIN 180 NM NW AND 120 NM SE SEMICIRCLES OF
CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA
FROM 10N TO 19N BETWEEN 116W AND 125W WINDS 20 KT OR LESS. SEAS
TO 10 FT PRIMARILY IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE GREG NEAR 15.8N 124.3W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM N SEMICIRCLE...60 NM SE AND 50 NM SW QUADRANTS.
SEAS 12 FT OR GREATER WITHIN 150 NM OF CENTER WITH SEAS TO 24
FT. ELSEWHERE WITHIN 180 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8
TO 12 FT. REMAINDER OF AREA BOUNDED BY 24N130W TO 19N120W TO
13N118W TO 08N127W TO 24N130W WINDS 20 KT OR LESS. SEAS TO 11 FT
PRIMARILY IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE GREG NEAR 16.0N 129.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GREG NEAR 16.3N 132.9W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM GREG NEAR 17.0N 136.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

...TROPICAL STORM WARNING...

...TROPICAL STORM WARNING...
.TROPICAL STORM FERNANDA NEAR 18.2N 140.4W 998 MB AT 2100 UTC
JUL 20 MOVING W OR 280 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 50
KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE... 60
NM SE...50 NM SW AND 70 NM NW QUADRANTS. SEAS 12 FT OR GREATER
WITHIN 120 NM NW AND SE QUADRANTS...150 NM NE AND 90 NM SW
QUADRANTS WITH SEAS TO 19 FT. ELSEWHERE WITHIN 270 NM N AND 150
NM S SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER FORECAST WATERS W OF LINE FROM 26N135W TO 17N135W TO
13N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT PRIMARILY IN MIXED
SWELL.
.24 HOUR FORECAST TROPICAL DEPRESSION FERNANDA NEAR 19.0N
143.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR
GREATER WITHIN 120 NM OF CENTER WITH SEAS TO 18 FT. ELSEWHERE
WITHIN 150 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER FORECAST WATERS W OF LINE FROM 25N140W TO 20N136W TO
18N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT PRIMARILY IN MIXED
SWELL.
.48 HOUR FORECAST POST TROPICAL REMNANT LOW FERNANDA NEAR 20.2N
147.3W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. CONDITIONS W
OF FORECAST WATERS.
.72 HOUR FORECAST POST TROPICAL REMNANT LOW FERNANDA NEAR 21.5N
151.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST TROPICAL REMNANT LOW FERNANDA NEAR 22.5N
156.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

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.

.POST TROPICAL CYCLONE EIGHT-E NEAR 13.3N 123.9W 1009 MB AT 2100
UTC JUL 20 MOVING W SW OR 240 DEG AT 6 KT. WINDS 20 TO 25 KT
WITHIN 120 NM OF CENTER. SEAS TO 10 FT WITHIN 360 NM N AND 180
NM S SEMICIRCLES OF CENTER.
.24 HOUR FORECAST POST TROPICAL REMNANT LOW EIGHT-E NEAR 11.9N
125.3W. WINDS 20 TO 25 KT WITHIN 90 NM SE QUADRANT OF LOW. SEAS
TO 10 FT IN MIXED SWELL WITHIN 150 NM OF CENTER.
.48 HOUR FORECAST POST TROPICAL REMNANT LOW EIGHT E NEAR 11.5N
126.5W. CONDITIONS MERGE.
.72 HOUR FORECAST...DISSIPATED.

.LOW PRES NEAR 12N106W 1008 MB. NE TO E WINDS 20 TO 30 KT WITHIN
270 NM NE QUADRANT OF LOW. SEAS TO 10 FT. ELSEWHERE WITHIN 420
NM OF LOW WINDS 20 KT OR LESS. SEAS TO 9 FT PRIMARILY IN SW
SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13N110W 1008 MB. WITHIN 180 NM E SEMICIRCLE OF LOW SE TO S WINDS
20 TO 30 KT. SEAS 9 TO 11 FT. ELSEWHERE WITHIN 300 NM E AND 180
NM W SEMICIRCLES OF LOW WINDS 20 KT OR LESS. SEAS TO 9 FT
PRIMARILY IN SW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
14.5N113W 1006 MB. WITHIN 150 NM E AND 60 NM W SEMICIRCLES OF
LOW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.  ELSEWHERE WITHIN 300 NM
E AND 180 NM W SEMICIRCLES OF LOW WINDS 20 KT OR LESS. SEAS TO 9
FT PRIMARILY IN SW SWELL.

.WITHIN 45 NM EITHER SIDE OF LINE FROM 16N95W TO 13.5N96W...
INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 KT OR LESS.
SEAS TO 8 FT IN MIXED NE AND SW SWELL.
.12 HOUR FORECAST WITHIN 45 NM EITHER SIDE OF LINE FROM 16N95W
TO 13N95W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 KT OR
LESS. SEAS TO 8 FT IN MIXED NE AND SW SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 90 NM OF 10N88W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED
NE AND SW SWELL.
.24 HOUR FORECAST WITHIN 90 NM OF 10N91W WINDS 20 KT OR LESS.
SEAS 8 FT IN MIXED NE AND SW SWELL. WITHIN 90 NM OF 04N89W WINDS
20 KT OR LESS. SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 90 OF LINE FROM 07N92W TO 06N98W WINDS
20 KT OR LESS. SEAS 8 FT IN SW SWELL.

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

CONVECTION VALID AT 2100 UTC THU JUL 20...

.LOW PRES 08N87W 1010 MB WITH TROPICAL WAVE TO 12N87W...SCATTERED
MODERATE ISOLATED STRONG WITHIN 240 NM W SEMICIRCLE OF CENTER.

.LOW PRES 12N106W 1008 MB...SCATTERED STRONG WITHIN 90 NM OF
12N108W.

.TROPICAL STORM GREG...SCATTERED MODERATE TO STRONG WITHIN 180 NM
OF THE CENTER.

.TROPICAL DEPRESSION EIGHT...SCATTERED MODERATE TO STRONG WITHIN
75 NM OF 13N125W.

.TROPICAL STORM FERNANDA...SCATTERED MODERATE WITHIN 120 NM OVER
THE NE QUADRANT OF CENTER.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO LOW PRES 08N87W TO LOW PRES
12N106W.
SCATTERED MODERATE ISOLATED STRONG ELSEWHERE WITHIN 120 NM OF
LINE FROM 06N88W TO 10N96W TO 11N103W.

.FORECASTER NELSON. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC JUL 20 2017.
24 HOUR FORECAST VALID 1800 UTC JUL 21 2017.
48 HOUR FORECAST VALID 1800 UTC JUL 22 2017.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM FERNANDA JUST E OF AREA 18.1N 139.9W MOVING W 11
KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM
FORCE WINDS WITHIN 80 NM NE... 60 NM SE...50 NM SW AND 70 NM NW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 120 NM NW AND SE
QUADRANTS...150 NM NE AND 90 NM SW QUADRANTS WITH SEAS TO 19 FT.
ELSEWHERE E OF LINE 18N140W 17N143W 20N147W 25N145W 24N140W
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT E OF LINE 12N140W 20N152W
27N140W.
.24 HOUR FORECAST TROPICAL DEPRESSION FERNANDA 19.0N 143.7W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER
WITHIN 120 NM OF CENTER WITH SEAS TO 18 FT. SEAS 8 TO 12 FT
ELSEWHERE BOUNDED BY 26N145W 22N140W 12N148W 18N157W 26N145W.
.48 HOUR FORECAST POST TROPICAL REMNANT LOW FERNANDA NEAR 20
147W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS 12 TO 16
FT FROM 24N TO 20N BETWEEN 144W AND 148W...SEAS 8 TO 12 FT
ELSEWHERE BOUNDED BY 27N147W 24N142W 18N152W 22N153W 27N147W.


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

...GALE WARNING...
.LOW 25N177E 1010 MB MOVING NNW 15 KT. TROUGH FROM LOW TO
20N175E 19N171W. WINDS 30 TO 40 KT WITHIN 240 NM OF CENTER N
QUADRANT. WINDS 20 TO 30 KT ELSEWHERE N OF LINE 30N175W 22N179E
30N171E. SEAS 12 TO 17 FT N OF 23N BETWEEN 178W AND 172E...SEAS
8 TO 12 FT ELSEWHERE N OF LINE 30N172W 20N170E 17N160E.
SCATTERED MODERATE TO STRONG TSTMS BOUNDED BY 30N180W 27N174W
22N178E 26N174E 30N180W.
.24 HOUR FORECAST LOW 28N174E 1003 MB. TROUGH FROM LOW TO
22N173E. WINDS 30 TO 40 KT N OF 28N BETWEEN 178E AND
172E...WINDS 20 TO 30 KT ELSEWHERE N OF LINE 30N180W 25N178E
30N168E. SEAS 12 TO 15 FT N OF 27N BETWEEN 180W AND 170W...SEAS
8 TO 12 FT ELSEWHERE N OF LINE 30N177W 26N180W 22N170E 17N160E.
.48 HOUR FORECAST LOW MOVED N OF AREA. WINDS 30 TO 40KT N OF
LINE 30N171E 28N168E 30N167E...WINDS 20 TO 30 KT ELSEWHERE N OF
LINE 30N172E 27N167E 28N165E 30N167E.

.SYNOPSIS AND FORECAST.

.ITCZ 10N140W 06N160W 06N180W 03N168E. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 150 NM OF ITCZ W OF 178W.

.WINDS NE 20 TO 25 KT FROM 14N TO 09N BETWEEN 152W AND 163W.
.24 HOUR FORECAST WINDS DIMINISHED TO 20 KT OR LESS.

.SEAS 8 TO 9 FT FROM 14N TO 09N BETWEEN 155W AND 165W.
.24 HOUR FORECAST SEAS 8 FT FROM 12N TO 06N BETWEEN 160W AND
170E. .48 HOUR FORECAST WINDS DIMINISHED TO LESS THAN 8 FT.

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

$$
.HONOLULU FORECASTER.


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