High Seas Forecast
Issued by NWS

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834
FZPN01 KWBC 240939
HSFEP1

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...GALE WARNING...
.LOW 52N145W 1009 MB MOVING NE 10 KT. BETWEEN 120 NM AND 360 NM
W SEMICIRCLE AND WITHIN 300 NM E AND SE AND 360 NM NE QUADRANTS
WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 55N140W 1011 MB. WITHIN 180 NM NE...240 NM
SE AND 420 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW 46N167E 995 MB MOVING NE 30 KT.
WITHIN 240 NM W AND NW...660 NM S AND BETWEEN 360 NM AND 600 NM
E QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11 FT.
.12 HOUR FORECAST FROM 40N TO 48N BETWEEN 166W AND 175W WINDS 25
TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 54N180W 994 MB.
FRONT TO EXTEND FROM 58N176W TO 53N170W TO 43N170W. WITHIN 240
NM NE AND E OF FRONT WINDS 25 TO 40 KT. SEAS 8 TO 17 FT.
ELSEWHERE WITHIN 600 NM N AND NE AND 840 NM SE QUADRANTS WINDS
20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N179W 992 MB.
FRONT TO EXTEND FROM 59N176W TO 55N159W TO 49N160W TO 42N166W.
BETWEEN 240 NM AND 600 NM S QUADRANT AND 240 NM NE AND E OF
FRONT WINDS 20 TO 30 KT. SEAS 8 TO 13 FT...EXCEPT OVER THE
BERING SEA TO 9 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 54N173E 1000 MB MOVING NW 10 KT. FRONT EXTENDS FROM 58N179E
TO 52N174W TO 45N174W TO 39N178W. WITHIN 240 NM NE AND E OF
FRONT WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED ABOVE
WITH COMPLEX LOW.

.LOW 34N131W 1011 MB MOVING NW 10 KT. WITHIN 360 NM E OF A LINE
FROM 46N130W TO 40N137W TO 34N142W AREA OF N TO NE WINDS 20 TO
30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW 36N133W 1013 MB. BETWEEN 180 NM AND 600 NM
NW SEMICIRCLE AREA OF N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 12
FT. .48 HOUR FORECAST LOW 37N132W 1014 MB. BETWEEN 120 NM AND
480 NM NW SEMCIRCLE AND FROM 34N TO 50N BETWEEN 124W AND 130W
WINDS TO 25 KT. SEAS TO 10 FT.

.OVER FORECAST WATERS N OF 63N W OF 166W AREA OF S WINDS TO 25
KT. SEAS TO 8 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 30N TO 35N E OF 121W WINDS TO 25 KT. SEAS
LESS THAN 8 FT.
.48 HOUR FORECAST FROM 30N TO 35N E OF 121W WINDS TO 25 KT. SEAS
TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 55N
BETWEEN 144W AND 150W AND WITHIN AN AREA BOUNDED BY A LINE FROM
34N167W TO 42N172W TO 52N171W TO 47N166W TO 34N167W.
.24 HOUR FORECAST DENSE FOG FROM 37N TO 62N BETWEEN 166W AND
180W AND WITHIN 120 NM OF 35N167E.
.48 HOUR FORECAST DENSE FOG N OF 58N BETWEEN 170W AND 180W...N
OF 53N BETWEEN 176E AND 171E...FROM 33N TO 40N BETWEEN 160E AND
179E AND WITHIN 300 NM SE OF A LINE FROM 53N161W TO 47N166W TO
42N173W.

.HIGH 46N135W 1027 MB MOVING SW 05 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 44N160W 1034 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 44N153W 1033 MB.
.48 HOUR FORECAST HIGH 44N148W 1031 MB.

.FORECASTER KOSIER. 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 JUN 24.
24 HOUR FORECAST VALID 0600 UTC SUN JUN 25.
48 HOUR FORECAST VALID 0600 UTC MON JUN 26.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF LINE FROM 24N140W TO 19N130N TO 30N124W WINDS 20 KT OR
LESS. SEAS 8 TO 12 FT IN NW SWELL.
.24 HOUR FORECAST N OF 26N W OF 136W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN N SWELL.
.48 HOUR FORECAST N OF 28N W OF 138W WINDS 20 KT OR LESS. SEAS
8 FT IN N SWELL.

.12 HOUR FORECAST LOW PRES NEAR 13.5N97.5W 1008 MB. WITHIN 90 NM
N QUADRANT OF LOW CENTER WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
14N100W 1007 MB. WITHIN 90 NM NE SEMICIRCLE OF LOW CENTER WINDS
20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N104.5W 1006 MB. WITHIN 90 NM OF CENTER...EXCEPT 30 NM SW
QUADRANT WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

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

CONVECTION VALID AT 0900 UTC SAT JUN 24...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO LOW PRES NEAR 13N97W TO 09N126W.
ITCZ FROM 09N126W TO 09N134W TO BEYOND 06N140W. SCATTERED
MODERATE ISOLATED STRONG FROM 07N TO 16N BETWEEN 92W AND 100W.
SCATTERED MODERATE WITHIN 150 NM S OF THE MONSOON TROUGH BETWEEN
100W AND 112W. SCATTERED MODERATE WITHIN 90 NM S OF THE ITCZ
W OF 134W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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