High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 260338
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC JUL 26.
24 HOUR FORECAST VALID 0000 UTC JUL 27.
48 HOUR FORECAST VALID 0000 UTC JUL 28.

.WARNINGS.

...TROPICAL STORM WARNING...
.TYPHOON NORU SW OF FORECAST AREA NEAR 28.1N 157.9E MOVING 340
DEG AT 12 KT. TROPICAL STORM FORCE WINDS WITHIN 145 NM NE...125
NM SE...110 NM SW...AND 95 NM NW QUADRANTS. OVER FORECAST WATERS
SEAS 12 FT OR GREATER WITHIN 360 NM NE QUADRANT. ELSEWHERE FROM
30N TO 37N BETWEEN 166E AND 160E WINDS 20 TO 33 KT. SEAS 8 TO 12
FT.
.24 HOUR FORECAST TYPHOON NORU WELL W OF AREA. OVER FORECAST
WATERS FROM 30N TO 39N W OF 165E WINDS 20 TO 30 KT. SEAS 8 TO 12
FT.
.48 HOUR FORECAST FROM 30N TO 36N W OF 163E WINDS TO 25 KT. SEAS
TO 10 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 36N TO 46N BETWEEN 124W AND 133W WINDS 20 TO 30 KT. SEAS 8
TO 12 FT.
.24 HOUR FORECAST FROM 34N TO 44N BETWEEN 124W AND 130W WINDS 20
TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 35N TO 43N BETWEEN 124W AND 129W WINDS 20
TO 30 KT. SEAS TO 10 FT.

.LOW 53N136W 1011 MB MOVING NE 10 KT. WITHIN 480 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 38N167W 1020 MB MOVING NE 10 KT. WITHIN 300 NM N AND NW AND
180 NM E QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 40N163W 1020 MB. WITHIN 240 NM NW
SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 43N152W 1016 MB. WITHIN 240 NM SE
SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.

.FROM 30N TO 38N BETWEEN 176W AND 171E WINDS TO 25 KT. SEAS TO
10 FT.
.24 HOUR FORECAST FROM 32N TO 39N BETWEEN 176W AND 170E WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST FROM 32N TO 40N BETWEEN 180W AND 164E WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.

.OVER FORECAST WATERS N OF 45N AND W OF 166E WINDS TO 25 KT.
SEAS TO 9 FT.
.24 HOUR FORECAST W OF A LINE FROM 45N166E TO 58N180W WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST N OF 50N W OF 176W WINDS TO 25 KT. SEAS TO 12
FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS WITHIN 180 NM OF 52N141W...AND W OF A LINE FROM 40N170E
TO 49N167W TO 60N176W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM OF 52N142W AND
40N160W...AND W OF A LINE FROM 40N170E TO 48N164W TO 61N176W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM OF 52N142W...AND W OF
A LINE FROM 40N170E TO 46N170W TO 63N168W.

.HIGH 39N146W 1031 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 38N143W 1030 MB.
.48 HOUR FORECAST HIGH 37N138W 1028 MB.

.HIGH 47N178E 1036 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 47N178E 1038 MB.
.48 HOUR FORECAST HIGH 46N180W 1035 MB.

.FORECASTER NOLT. 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 0000 UTC WED JUL 26.
24 HOUR FORECAST VALID 0000 UTC THU JUL 27.
48 HOUR FORECAST VALID 0000 UTC FRI JUL 28.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 16.0N 109.8W 973 MB AT 0300 UTC JUL 26
MOVING WNW OR 285 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 90 KT
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM S
SEMICIRCLE...80 NM NE QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 90 NM N SEMICIRCLE AND 60 NM S SEMICIRCLE WITH
SEAS TO 27 FT. ELSEWHERE WITHIN 180 NM N AND 90 NM S SEMICIRCLES
WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF AREA FROM 13N
TO 20N BETWEEN 106W AND 113W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE HILARY NEAR 16.9N 113.6W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW
QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
180 NM N AND 120 NM S SEMICIRCLES WITH SEAS TO 35 FT. ELSEWHERE
WITHIN 210 NM N AND 150 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS
9 TO 12 FT. REMAINDER OF AREA FROM 11N TO 23N BETWEEN 109W AND
119W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE HILARY NEAR 18.0N 117.5W. 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 150 NM SE
SEMICIRCLES WITH SEAS TO 36 FT. ELSEWHERE WITHIN 210 NM E AND
150 NM W SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA BOUNDED BY 11N115W TO 22N127W TO 27N120W TO
20N112W TO 11N115W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED
SWELL.
.72 HOUR FORECAST HURRICANE HILARY NEAR 19.2N 121.1W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM HILARY NEAR 20.0N 124.8W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST TROPICAL STORM HILARY NEAR 21.0N 128.3W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

...HURRICANE WARNING...

.HURRICANE IRWIN NEAR 15.9N 120.9W 980 MB AT 0300 UTC JUL 26
MOVING WSW OR 250 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 80 KT
GUSTS 100 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N
SEMICIRCLE...40 NM SE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 60 NM N SEMICIRCLE AND 45 NM S SEMICIRCLE WITH
SEAS TO 27 FT. ELSEWHERE WITHIN 120 NM NW AND 60 NM SE
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF
AREA WITHIN 210 NM OF CENTER WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE IRWIN NEAR 15.2N 123.0W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE
WITHIN 150 NM OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA FROM 10N TO 19N BETWEEN 119W AND 128W WINDS 20
KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.7N 124.0W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM N SEMICIRCLE AND 40 NM S SEMICIRCLE. SEAS 12
FT OR GREATER WITHIN 270 NM SE AND 120 NM NW SEMICIRCLES WITH
SEAS TO 22 FT. ELSEWHERE WITHIN 150 NM NW AND 300 NM SE
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER OF
AREA BOUNDED BY 11N115W TO 05N122W TO 14N131W TO 22N127W TO
11N115W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 15.5N 123.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRWIN NEAR 18.2N 123.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 22.0N 126.0W.
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.

.TROPICAL DEPRESSION GREG NEAR 17.2N 138.8W 1006 MB AT 0300 UTC
JUL 26 MOVING NW OR 310 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT. SEAS 12 FT OR GREATER WITHIN 30 NM N SEMICIRCLE
AND 0 NM S SEMICIRCLE WITH SEAS TO 12 FT. ELSEWHERE WITHIN 180
NM NE AND 90 NM SW SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 12
FT. REMAINDER OF AREA W OF LINE FROM 20N135W TO 15N135W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG W OF AREA NEAR
18.2N 141.2W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER
FORECAST WATERS FROM 17N TO 19N W OF 139W WINDS 20 TO 25 KT.
SEAS TO 9 FT. ELSEWHERE FROM 17N TO 21N W OF 139W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG W OF AREA NEAR
18.0N 144.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER
FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 17.0N
147.6W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 16.0N
150.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

.30 HOUR FORECAST S OF 02S BETWEEN 91W AND 116W WINDS 20 KT OR
LESS. SEAS 8 FT IN S TO SW SWELL.
.48 HOUR FORECAST S OF LINE FROM 03.4S116W TO 08N103W TO 01S81W
...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 0215 UTC WED JUL 26...

.HURRICANE HILARY...NUMEROUS MODERATE TO STRONG NE
SEMICIRCLE WITHIN 90 NM. NUMEROUS MODERATE ISOLATED STRONG
ELSEWHERE SW SEMICIRCLE WITHIN 75 NM. MODERATE FROM 16N TO 19N
BETWEEN 109W AND 111.5W.

.HURRICANE IRWIN...NUMEROUS MODERATE SCATTERED STRONG WITHIN 60
NM W AND 30 NM E SEMICIRCLE.

.TROPICAL DEPRESSION GREG...SCATTERED MODERATE ISOLATED
STRONG WITHIN 60 NM W SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 09N84W TO 09N90W TO 08N96W TO
13N105W. SCATTERED MODERATE ISOLATED STRONG N OF 07N E OF 83W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.


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