High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 262150
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED JUL 26 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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 26.
24 HOUR FORECAST VALID 1800 UTC JUL 27.
48 HOUR FORECAST VALID 1800 UTC JUL 28.

.WARNINGS.

.NONE.

.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 37N TO 43N BETWEEN 124W AND 128W WINDS TO 25 KT. SEAS TO 9
FT.
.24 HOUR FORECAST FROM 35N TO 42N BETWEEN 124W AND 128W WINDS TO
25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 34N TO 43N BETWEEN 123W AND 128W WINDS 20
TO 30 KT. SEAS TO 11 FT.

.LOW 31N175E 1012 MB MOVING NW 10 KT. WITHIN 540 NM N QUADRANT
WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 33N169E 1012 MB. WITHIN 540 NM N AND NE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH NEW LOW 31N171E 1012 MB.
WITHIN 540 NM N AND NE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11
FT.

.OVER FORECAST WATERS W OF A LINE FROM 45N164E TO 56N176E WINDS
20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST N OF A LINE FROM 50N170E TO 60N167W WINDS TO
25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 50N TO 55N BETWEEN 170W AND 170E WINDS TO
25 KT. SEAS TO 8 FT.

.LOW 55N135W 1009 MB MOVING NE 10 KT. WITHIN 180 NM S SEMICIRCLE
WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.FROM 30N TO 37N BETWEEN 164E AND 160E WINDS 20 TO 30 KT. SEAS
10 TO 14 FT.
.24 HOUR FORECAST CONDITIONS W OF FORECAST AREA.

.48 HOUR FORECAST NEW LOW 50N143W 1006 MB. WITHIN 540 NM S AND
SE QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS W OF A LINE FROM 40N170E TO 47N165W TO 55N165W TO
60N176W...AND WITHIN 120 NM OF 49N143W.
.24 HOUR FORECAST DENSE FOG W OF A LINE FROM 40N170E TO 50N163W
TO 60N168W...AND WITHIN 180 NM OF 50N142W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 52N BETWEEN 137W AND
144W...AND W OF A LINE FROM 38N175E TO 51N162W TO 59N166W.

.HIGH 39N145W 1031 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 37N142W 1029 MB.
.48 HOUR FORECAST HIGH 37N135W 1027 MB.

.HIGH 44N155W 1030 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 48N179E 1037 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 47N179W 1036 MB.
.48 HOUR FORECAST HIGH 45N177W 1034 MB.

.FORECASTER COLLINS. 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 WED JUL 26.
24 HOUR FORECAST VALID 1800 UTC THU JUL 27.
48 HOUR FORECAST VALID 1800 UTC FRI JUL 28.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 16.7N 113.2W 972 MB AT 2100 UTC JUL 26
MOVING W OR 280 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 90 KT
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NW AND SE
QUADRANTS...90 NM NE QUADRANT AND 60 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 150 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE
WITH SEAS TO 32 FT. ELSEWHERE WITHIN 180 NM NE SEMICIRCLE AND
120 NM SW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA FROM 13N TO 21N BETWEEN 109W AND 117W WINDS 20
KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE HILARY NEAR 17.5N 116.5W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE
WITHIN 180 NM OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA BOUNDED BY 25N118W TO 17N111W TO 11N117W TO
21N124W TO 25N118W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED
SWELL.
.48 HOUR FORECAST HURRICANE HILARY NEAR 18.7N 119.7W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS
WITHIN 100 NM N SEMICIRCLE...90 NM SE QUADRANT AND 70 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NW AND 180 NM SE
SEMICIRCLES WITH SEAS TO 30 FT. ELSEWHERE WITHIN 240 NM SE AND
180 NM NW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA BOUNDED BY 09N118W TO 24N129W TO 28N123W TO
18N113W TO 09N118W WINDS 20 KT OR LESS. SEAS TO 11 FT IN MIXED
SWELL.
.72 HOUR FORECAST HURRICANE HILARY NEAR 20.3N 123.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HILARY NEAR 21.5N 126.5W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM HILARY NEAR 23.0N 130.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 15.1N 122.8W 996 MB AT 2100 UTC JUL
26 MOVING WSW OR 250 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N
SEMICIRCLE AND 50 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
90 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE WITH SEAS TO 18 FT.
ELSEWHERE WITHIN 120 NM OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO
12 FT. REMAINDER OF AREA FROM 12N TO 19N BETWEEN 120W AND 127W
WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 124.7W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 120 NM OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO
12 FT. REMAINDER OF AREA BOUNDED BY 11N117W TO 21N124W TO
14N132W TO 07N120W TO 11N117W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.5N 126.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 120 NM OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO
12 FT. REMAINDER OF AREA BOUNDED BY 09N118W TO 07N127W TO
17N133W TO 24N129W TO 09N118W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 15.5N 125.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRWIN NEAR 18.0N 126.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 21.0N 128.5W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

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 GREG W OF AREA NEAR 18.4N 142.0W 1007 MB
AT 2100 UTC JUL 26 MOVING WNW OR 285 DEG AT 08 KT. MAXIMUM
SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST WATERS FROM 17N
TO 20N W OF 138W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED
SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG W OF AREA NEAR
18.5N 143.4W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER
FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.12 HOUR FORECAST S OF 02S BETWEEN 94W AND 115W WINDS 20 KT OR
LESS. SEAS 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST S OF LINE FROM 02S81W TO 01N96W TO
03.4S117W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.
.48 HOUR FORECAST S OF LINE FROM 05N80W TO 11N104W TO
03.4S117W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN S TO SW SWELL.

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

CONVECTION VALID AT 2100 UTC WED JUL 26...

.HURRICANE HILARY...NUMEROUS MODERATE SCATTERED STRONG WITHIN
90 NM OF CENTER. SCATTERED MODERATE ELSEWHERE WITHIN 210 NM OF
CENTER.

.TROPICAL STORM IRWIN...NUMEROUS MODERATE ISOLATED STRONG FROM
15N TO 18N BETWEEN 122W AND 125W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO 08N95W TO 09N102W TO 12N108W.
SCATTERED MODERATE ISOLATED STRONG N OF 06N BETWEEN 80W AND
84W...FROM 07N TO 09N BETWEEN 90W AND 93W...FROM 08N TO 10N
BETWEEN 90W AND 95W. SCATTERED MODERATE FROM 08N TO 11N BETWEEN
104W AND 110W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.



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