High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 290955
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT JUL 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0600 UTC JUL 29.
24 HOUR FORECAST VALID 0600 UTC JUL 30.
48 HOUR FORECAST VALID 0600 UTC JUL 31.

.WARNINGS.

...GALE WARNING...
.FROM 34N TO 44N BETWEEN 122W AND 128W N TO NW WINDS 20 TO 30 KT.
SEAS TO 11 FT.
.24 HOUR FORECAST FROM 39N TO 43N BETWEEN 124W AND 126W N WINDS
25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE FROM 35N TO 45N BETWEEN
123W AND 129W N WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 39N TO 43N BETWEEN 124W AND 126W N WINDS
25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE FROM 34N TO 46N BETWEEN
124W AND 131W N WINDS TO 25 KT. SEAS TO 10 FT.

...GALE WARNING...
.LOW 52N139W 999 MB MOVING NE 10 KT WILL SLOW AND TURN NW AFTER
24 HOURS. WITHIN 360 NM E AND NE...AND 240 NM S AND SE QUADRANTS
WINDS 25 TO 35 KT. SEAS TO 10 FT. ELSEWHERE FROM 46N TO 56N E OF
147W WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 56N137W 1004 MB. WITHIN 120 NM N
SEMICIRCLE...AND 360 NM S AND SE QUADRANTS WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 32N171E 1008 MB MOVING NW 15 KT. WITHIN 300 NM NE QUADRANT
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE N OF 30N WITHIN
480 NM NE...420 NM E AND SE...AND 540 NM N AND NW QUADRANTS
WINDS TO 25 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 39N165E 1007 MB. WITHIN 240 NM N AND NE
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN
420 NM NE...600 NM E AND SE...AND 240 NM NW QUADRANTS WINDS 20
TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 37N164E
DESCRIBED BELOW.

...GALE WARNING...
.12 HOUR FORECAST FROM 30N TO 32N BETWEEN 169E AND 160E WINDS 20
TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST NEW LOW 33N164E 999 MB. FROM 30N TO 35N
BETWEEN 170E AND 165E WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
ELSEWHERE FROM 30N TO 36N BETWEEN 171E AND 163E WINDS TO 25 KT.
SEAS TO 12 FT.
.48 HOUR FORECAST LOW 37N164E 999 MB. N OF 30N WITHIN 360 NM NE
AND 420 NM E AND SE QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 16
FT. ELSEWHERE N OF 30N WITHIN 540 NM NE...600 NM SE...AND 300 NM
N AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 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.

.LOW 55N158W 1008 MB MOVING SE 15 KT WILL SLOW AFTER 24 HOURS.
OVER FORECAST WATERS FROM 47N TO 57N W OF 163W WINDS TO 25 KT.
SEAS TO 9 FT.
.24 HOUR FORECAST LOW 50N152W 1004 MB. WITHIN 360 NM SE QUADRANT
WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 48N151W 1008 MB. FRONT TO EXTEND FROM
37N147W TO 47N143W. WITHIN 300 NM NW QUADRANT...AND WITHIN 240 NM
E OF FRONT WINDS TO 25 KT. SEAS TO 9 FT.

.24 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 53N171E
TO 58N178E SW WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST WATERS
W OF A LINE FROM 37N175E TO 49N156W TO 57N165W.
.24 HOUR FORECAST DENSE FOG WITHIN 120 NM OF 50N160W...AND FROM
38N TO 59N W OF 170W.
.48 HOUR FORECAST DENSE FOG WITHIN 300 NM OF 47N141W...WITHIN
180 NM OF 50N162W...AND W OF A LINE FROM 38N175E TO 57N163W TO
62N171W.

.HIGH 46N126W 1022 MB MOVING NW 10 KT.
.24 HOUR FORECAST HIGH 51N128W 1022 MB.
.48 HOUR FORECAST HIGH 55N130W 1029 MB.

.HIGH 37N137W 1027 MB NEARLY STATIONARY WILL MOVE NE AFTER 24
HOURS.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 44N132W 1028 MB.

.HIGH 60N142W 1016 MB DRIFTING N.
.24 HOUR FORECAST HIGH DISSIPATED INLAND.
.48 HOUR FORECAST NEW HIGH 59N142W 1023 MB.

.HIGH 43N177W 1033 MB DRIFTING NW WILL TURN NE AFTER 24 HOURS.
.24 HOUR FORECAST HIGH 44N179E 1031 MB.
.48 HOUR FORECAST HIGH 46N180W 1030 MB.

.24 HOUR FORECAST NEW HIGH 63N166W 1016 MB.
.48 HOUR FORECAST HIGH MOVED INLAND OVER ALASKA.

.48 HOUR FORECAST NEW HIGH 56N162W 1023 MB.

.FORECASTER MILLS. 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 0600 UTC SAT JUL 29.
24 HOUR FORECAST VALID 0600 UTC SUN JUL 30.
48 HOUR FORECAST VALID 0600 UTC MON JUL 31.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HILARY NEAR 20.7N 120.8W 996 MB AT 0900 UTC JUL
29 MOVING NW OR 305 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER
EXCEPT 50 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 105 NM NW
AND SE QUADRANTS...120 NM NE QUADRANT AND 75 NM SW QUADRANT WITH
SEAS TO 20 FT. ELSEWHERE WITHIN 180 NM OF CENTER EXCEPT 120 NM
SW QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF
AREA FROM 17N TO 24N BETWEEN 116W AND 124W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM HILARY NEAR 22.9N 124.3W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND
30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM OF CENTER
WITH SEAS TO 18 FT. ELSEWHERE WITHIN 120 NM N AND 60 NM S
SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 11 FT.
REMAINDER OF AREA BOUNDED FROM 20N TO 27N BETWEEN 120W AND 128W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HILARY NEAR 24.9N
128.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 90 NM
NW AND 45 NM SE SEMICIRCLES WINDS 20 TO 30 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA FROM 22N TO 27N BETWEEN 125W AND 133W WINDS 20
KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW HILARY NEAR 25.5N
131.5W. 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 HILARY NEAR 25.5N
133.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 14.9N 124.9W 998 MB AT 0900 UTC JUL
29 MOVING NW OR 305 DEG AT 1 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM E
SEMICIRCLE AND 30 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
75 NM E SEMICIRCLE AND 90 NM W SEMICIRCLE WITH SEAS TO 17 FT.
ELSEWHERE WITHIN 150 NM NW AND 180 NW SE SEMICIRCLES WINDS 20 TO
33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA FROM 10N TO 20N
BETWEEN 119W AND 133W WINDS 20 KT OR LESS. SEAS TO 10 FT IN
MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IRWIN NEAR 17.1N 125.1W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 70 NM E SEMICIRCLE...30 NM SW QUADRANT AND 40 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 60 NM S
SEMICIRCLES WITH SEAS TO 20 FT. ELSEWHERE WITHIN 120 NM OF
CENTER WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA
FROM 12N TO 20N BETWEEN 119W AND 127W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 21.7N 127.0W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM E SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 12
FT OR GREATER WITHIN 90 NM NW AND 60 NM SE SEMICIRCLES WITH SEAS
TO 16 FT. ELSEWHERE WITHIN 15 NM NE AND 75 NM SW SEMICIRCLES
WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA FROM 20N
TO 26N BETWEEN 120W AND 132W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 25.5N
130.0W. 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 IRWIN NEAR 27.5N
133.5W. 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.

.S OF LINE FROM 06N80W TO 10N97W TO 08.5N107W TO 03.4S118W...
INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS ISLANDS...
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.
.24 HOUR FORECAST S OF LINE FROM 07N79W TO 12N103W TO
03.4S118W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.
.48 HOUR FORECAST E OF LINE FROM 15.5N96.5W TO 02.5N110W TO
00N102W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.

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

CONVECTION VALID AT 0830 UTC SAT JUL 29...

.TROPICAL STORM HILARY...SCATTERED MODERATE ISOLATED STRONG FROM
19N TO 23N BETWEEN 118W AND 122W.

.TROPICAL STORM IRWIN...SCATTERED MODERATE FROM 12N TO 16N
BETWEEN 123W AND 127W.

.TROPICAL WAVE ALONG 99W-100W. SCATTERED MODERATE FROM 11N TO
17N BETWEEN 96W AND 102W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 10N83W TO 09N90W TO 11N100W TO
14N115W. ITCZ CONTINUES FROM 09N135W TO BEYOND 09N140W.
SCATTERED TO MODERATE CONVECTION FROM 06N TO 10N BETWEEN 82W AND
100W...FROM 07N TO 16N BETWEEN 103W AND 115W...AND WITHIN 90 NM
EITHER SIDE OF THE ITCZ.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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