High Seas Forecast
Issued by NWS

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789
FZPN01 KWBC 250934
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC TUE JUL 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC JUL 25.
24 HOUR FORECAST VALID 0600 UTC JUL 26.
48 HOUR FORECAST VALID 0600 UTC JUL 27.

.WARNINGS.

...TROPICAL STORM WARNING...
.24 HOUR FORECAST TYPHOON NORU SW OF AREA NEAR 28.9N 156.6E.
TROPICAL STORM FORCE WINDS WITHIN 185 NM NE...140 NM SE...100 NM
SW...AND 135 NM NW QUADRANTS. OVER FORECAST WATERS SEAS 12 FT OR
GREATER WITHIN 300 NM NE QUADRANT.
.48 HOUR FORECAST TYPHOON NORU WELL W OF AREA.

...GALE WARNING...
.FROM 36N TO 45N BETWEEN 124W AND 130W AREA OF N TO NW WINDS 25
TO 35 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST BETWEEN 124W AND A LINE FROM 49N128W TO
35N137W AREA OF N WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST BETWEEN 124W AND A LINE FROM 43N128W TO
35N135W AREA OF N TO NE WINDS 20 TO 30 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.

.LOW 51N144W 1017 MB MOVING NE 15 KT. WITHIN 360 NM S AND SW
QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 54N136W 1011 MB. WITHIN 360 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 37N169W 1016 MB MOVING NE 10 KT. FROM 34N TO 41N BETWEEN
167W AND 167E WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 38N167W 1020 MB. FROM 33N TO 42N BETWEEN
170W AND 168E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW 41N159W 1023 MB. FROM 34N TO 41N BETWEEN
174W AND 167E WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

.EXCEPT WHERE NOTED ABOVE WITH TYPHOON NORU FROM 30N TO 38N W OF
164E WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST EXCEPT WHERE NOTED ABOVE WITH TYPHOON NORU
FROM 30N TO 38N W OF 166E WINDS 20 TO 33 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST EXCEPT WHERE NOTED ABOVE WITH TYPHOON NORU
FROM 30N TO 38N W OF 164E WINDS TO 25 KT. SEAS 8 TO 12 FT.

.24 HOUR FORECAST OVER FORECAST WATERS W AND NW OF A LINE FROM
42N162E TO 51N170E TO 57N179W WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST W OF A LINE FROM 46N163E TO 54N179E TO 60N178E
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.24 HOUR FORECAST LOW 65N160W 1010 MB. OVER FORECAST WATERS N OF
61N BETWEEN 165W AND 171W WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 57N152W 1010 MB. WITHIN 780 NM W QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 55N
BETWEEN 138W AND 146W...AND W OF A LINE FROM 60N179W TO 48N175W
TO 38N168E.
.24 HOUR FORECAST DENSE FOG W OF A LINE FROM 61N178W TO 47N168W
TO 39N165E.
.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 62N176W TO 48N169W
TO 40N168E...WITHIN 120 NM OF 41N158W...AND WITHIN 120 NM OF
51N143W.

.HIGH 47N178E 1033 MB MOVING NE 05 KT.
.24 HOUR FORECAST HIGH 48N179E 1036 MB.
.48 HOUR FORECAST HIGH 48N179E 1037 MB.

.HIGH 40N144W 1031 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 39N147W 1032 MB.
.48 HOUR FORECAST HIGH 38N145W 1030 MB.

.HIGH 58N146W 1021 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH DISSIPATED.

.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 0600 UTC TUE JUL 25.
24 HOUR FORECAST VALID 0600 UTC WED JUL 26.
48 HOUR FORECAST VALID 0600 UTC THU JUL 27.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 15.3N 106.7W 975 MB AT 0900 UTC JUL 25
MOVING WNW OR 290 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 90 KT
GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER
EXCEPT 40 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N
AND 75 NM S SEMICIRCLES WITH SEAS TO 27 FT. ELSEWHERE WITHIN 135
NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE HILARY NEAR 16.3N 110.4W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM N SEMICIRCLE...70 NM SE QUADRANT AND 50 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM N AND 90 NM S
SEMICIRCLES WITH SEAS TO 36 FT. ELSEWHERE WITHIN 180 NM N AND
150 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER AREA WITHIN 240 NM OF CENTER WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE HILARY NEAR 17.4N 114.8W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 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 180 NM N AND 120 NM S
SEMICIRCLES WITH SEAS TO 36 FT. ELSEWHERE WITHIN 210 NM OF
CENTER WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN
300 NM OF CENTER WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED
SWELL.
.72 HOUR FORECAST HURRICANE HILARY NEAR 18.6N 118.7W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE HILARY NEAR 19.5N 122.5W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST HURRICANE HILARY NEAR 20.0N 126.0W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT.

...HURRICANE WARNING...
.HURRICANE IRWIN NEAR 15.5N 118.7W 991 MB AT 0900 UTC JUL 25
MOVING WNW OR 300 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 65 KT
GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NW AND SE
QUADRANTS...70 NM NE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 75 NM N AND 60 NM S SEMICIRCLES WITH SEAS TO
21 FT. ELSEWHERE WITHIN 135 NM OF CENTER WINDS 20 TO 33 KT. SEAS
8 TO 12 FT.
.24 HOUR FORECAST HURRICANE IRWIN NEAR 15.0N 120.5W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM S SEMICIRCLE...80 NM NE QUADRANT AND 60 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 75 NM S
SEMICIRCLES WITH SEAS TO 24 FT. ELSEWHERE WITHIN 150 NM N AND
120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
REMAINDER AREA WITHIN 210 NM OF CENTER WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.3N 122.2W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 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 90 NM OF CENTER WITH
SEAS TO 25 FT. ELSEWHERE WITHIN 150 NM OF CENTER WINDS 20 TO 33
KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN 270 NM OF CENTER
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IRWIN NEAR 14.0N 123.0W.
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 16.0N 122.5W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM IRWIN NEAR 20.0N 123.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM GREG NEAR 15.2N 135.7W 1003 MB AT 0900 UTC JUL
25 MOVING WNW OR 295 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS 60 NM NW QUADRANT. SEAS
12 FT OR GREATER WITHIN 30 NM S SEMICIRCLE...60 NM NE QUADRANT
AND 90 NM NW QUADRANT WITH SEAS TO 15 FT. ELSEWHERE FROM 13.5N
TO 18N BETWEEN 134W AND 138W WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
REMAINDER OF AREA W OF LINE FROM 21N140W TO 17N132W TO 10N136W
TO 12N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM GREG NEAR 16.9N 137.9W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 0 NM S SEMICIRCLE...30 NM NE QUADRANT AND 40 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM NW QUADRANT WITH
SEAS TO 13 FT. ELSEWHERE WITHIN 180 NM NW AND 60 NM SE
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG W OF AREA NEAR
17.6N 140.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER
FORECAST WATERS WITHIN 90 NM SE SEMICIRCLE WINDS 20 TO 30 KT.
SEAS TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 17.0N
144.0W. 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 GREG NEAR 16.0N
146.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW GREG NEAR 15.0N
149.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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.

.48 HOUR FORECAST S OF 02S BETWEEN 95W AND 113W WINDS 20 KT OR
LESS. SEAS 8 FT IN S TO SW SWELL.

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

CONVECTION VALID AT 0900 UTC TUE JUL 25...

.HURRICANE HILARY...NUMEROUS MODERATE TO STRONG WITHIN 120 NM OF
CENTER.

.HURRICANE IRWIN...NUMEROUS MODERATE TO STRONG WITHIN 105 NM OF
CENTER.

.TROPICAL STORM GREG...SCATTERED MODERATE ISOLATED STRONG
WITHIN 120 NM NW SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 08N78W TO 10N96W. ITCZ FROM 12N136W TO
10N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM OF
11N96W.

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.



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