High Seas Forecast
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000
FZPN02 KWBC 202325
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2345 UTC WED SEP 20 2017

CCODE/1:31:12:01:00/AOW+POR/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SEP 20.
24 HOUR FORECAST VALID 1800 UTC SEP 21.
48 HOUR FORECAST VALID 1800 UTC SEP 22.

.WARNINGS.

...GALE WARNING...
.LOW 48N177W 985 MB MOVING NE 10 KT. WITHIN 120 NM W AND NW OF A
LINE FROM 47N179E TO 52N179W TO 55N167W WINDS 30 TO 40 KT. SEAS
11 TO 19 FT. ELSEWHERE WITHIN 720 NM NE...240 NM SE...360 NM SW
AND 600 NM NW QUADRANTS...AND WITHIN 300 NM E OF A FRONT FROM
47N164W TO 40N164W TO 36N166W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 49N173W 993 MB. WITHIN 360 NM S AND 480 NM
W QUADRANTS...AND OVER FORECAST WATERS WITHIN 480 NM W OF A LINE
FROM 52N179W TO 58N164W TO 65N165W WINDS 25 TO 35 KT. SEAS 9 TO
16 FT. ELSEWHERE WITHIN 600 NM E QUADRANT WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 52N163W 997 MB. WITHIN 300 NM SE
SEMICIRCLE AND WITHIN 420 NM W OF A LINE FROM 50N168W TO 65N161W
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE WITHIN 240 NM E OF
A LINE FROM 52N145W TO 42N156W WINDS TO 25 KT. SEAS TO 10 FT.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 53.92N 168.03W IS CURRENTLY IN A HEIGHTENED
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 46N124W 1005 MB MOVING SE 10 KT. OVER FORECAST WATERS
WITHIN 660 NM W AND NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13
FT.
.24 HOUR FORECAST DISSIPATED INLAND WITH A NEW LOW TO FORM NEAR
46N126W 1008 MB. WITHIN 480 NM W SEMICIRCLE WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW INLAND. FROM 36N TO 45N BETWEEN 127W AND
133W WINDS TO 25 KT. SEAS TO 10 FT.

.LOW 41N172W 1001 MB MOVING NE 25 KT. WITHIN 360 NM S SEMICIRCLE
AND E QUADRANT WINDS 20 TO 30 KT. SEAS 9 TO 13 FT.
.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 49N173W
DESCRIBED ABOVE.

.OVER FORECAST WATERS FROM 32N TO 36N BETWEEN 120W AND 123W AREA
OF NW WINDS TO 25 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST FROM 32N TO 38N BETWEEN 118W AND 126W AREA OF
NW WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 32N TO 36N BETWEEN 119W AND 127W AREA OF
NW WINDS TO 25 KT. SEAS TO 10 FT.

.LOW 60N146W 1017 MB MOVING E 5 KT. FROM 58N TO 59N BETWEEN 147W
AND 153W WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 39N165E 1007 MB MOVING E 25 KT. FROM 33N TO 36N BETWEEN
170E AND 162E WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 38N178E 1012 MB. WITHIN 240 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 41N171W 1008 MB. WITHIN 180 NM S AND SE OF
A FRONT FROM THE LOW TO 36N180W WINDS TO 25 KT. SEAS TO 10 FT.

.24 HOUR FORECAST NEW LOW 39N161E 1008 MB. FROM 33N TO 37N
BETWEEN 160E AND 167E WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 37N177E 1008 MB. FROM 33N TO 37N BETWEEN
180W AND 167E WINDS 20 TO 30 KT. SEAS TO 11 FT.

.24 HOUR FORECAST NEW LOW 58N152W 1004 MB. WITHIN 120 NM N AND
240 NM E AND SE QUADRANTS...AND WITHIN 300 NM E OF A LINE FROM
THE LOW TO 41N160W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 60N146W 1008 MB WITH CONDITIONS DIMINISHED.

.48 HOUR FORECAST LOW 42N166E 1007 MB. WITHIN 240 NM N
SEMICIRCLE AND 420 NM SW QUADRANT WINDS TO 25 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 54N
BETWEEN 150W AND 174W.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 58N BETWEEN 143W AND
162W AND FROM 49N TO 57N BETWEEN 162W AND 172W.
.48 HOUR FORECAST DENSE FOG WITHIN 420 NM E OF A LINE FROM
54N155W TO 39N161W.

.HIGH 48N146W 1030 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 43N143W 1033 MB.
.48 HOUR FORECAST HIGH 43N142W 1030 MB.

.HIGH 40N150W 1032 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH 42N148W 1033 MB.
.48 HOUR FORECAST HIGH MERGED WITH HIGH 43N142W.

.24 HOUR FORECAST HIGH 30N179E 1021 MB.
.48 HOUR FORECAST HIGH 30N178W 1021 MB.

.FORECASTER CLARK. 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 SEP 20.
24 HOUR FORECAST VALID 1800 UTC THU SEP 21.
48 HOUR FORECAST VALID 1800 UTC FRI SEP 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.POST-TROPICAL REMNANT LOW NORMA NEAR 22N117W 1008 MB MOVING W 5
KT. WITHIN 90 NM NW QUADRANT N TO NE WINDS 20 TO 25 KT. SEAS 8
FT.
.24 HOUR FORECAST LOW PRES NEAR 23N117W. WITHIN 90 NM W
SEMICIRCLE NW TO N WINDS 20 TO 25 KT. SEAS 8 TO 9 FT WITH NW
SWELL.
.48 HOUR FORECAST LOW TO DISSIPATE. FROM 18N TO 23N BETWEEN 115W
AND 118W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MERGING SE AND NW
SWELL.

.POST-TROPICAL REMNANT LOW OTIS NEAR 16.5N131W 1009 MB MOVING SW
10 KT. WITHIN 150 NM NW SEMICIRCLE N TO NE WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT. ELSEWHERE FROM 15N TO 21N BETWEEN 131W AND 138W
WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW TO DISSIPATE. FROM 15N TO 20N BETWEEN 132W
AND 136W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF LINE FROM 30N119W TO 26.5N133W TO 27N140W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST N OF 21N BETWEEN 117W AND 130W WINDS 20 KT OR
LESS. SEAS TO 9 FT IN NW SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 117W AND 123W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.

.FROM 02N TO 12N BETWEEN 100W AND 115W WINDS 20 KT OR LESS. SEAS
TO 9 FT IN SE SWELL.
.24 HOUR FORECAST WITHIN 150 NM SE OF LINE FROM 14.5N100W TO
11N112W S TO SW WINDS 20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE FROM
02N TO 10N BETWEEN 110W AND 122W WINDS 20 KT OR LESS. SEAS TO 8
FT IN SE SWELL.
.48 HOUR FORECAST LOW PRES NEAR 16.5N102W 1008 MB. WITHIN 90 NM
NE AND 120 NM SW SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 8 FT.
FROM 10N TO 13.5N BETWEEN 99W AND 111W SW TO W WINDS 20 TO 25
KT. SEAS TO 8 FT.

.06 HOUR FORECAST GULF OF CALIFORNIA N OF 30N SW WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST GULF OF CALIFORNIA N OF 30N SW WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 2115 UTC WED SEP 20...

.TROPICAL WAVE ALONG 98W...SCATTERED MODERATE TO STRONG
FROM 10N TO 18N BETWEEN 92W AND 104W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N74W TO 14.5N96W TO 10N122W TO BEYOND
13N140W. SCATTERED MODERATE TO STRONG WITHIN 180 NM EITHER SIDE
OF TROUGH FROM 78W TO 86W...AND WITHIN 150 NM S OF TROUGH
BETWEEN 105W AND 114W.

.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1800 UTC SEP 20 2017.
24 HOUR FORECAST VALID 1800 UTC SEP 21 2017.
48 HOUR FORECAST VALID 1800 UTC SEP 22 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 13N159W 1011 MB NEARLY STATIONARY. TROUGH FROM LOW TO
11N152W TO 13N144W TO 13N140W NEARLY STATIONARY. WINDS 20 TO 25
KT WITHIN 180 NM NE QUADRANT OF LOW. ISOLATED MODERATE TO
LOCALLY STRONG TSTMS FROM 09N TO 14N BETWEEN 148W AND 159W.
ISOLATED MODERATE TSTMS FROM 12N TO 14N E OF 145W.
.24 HOUR FORECAST LOW 12N159W 1011 MB. TROUGH FROM LOW TO
14N155W TO 14N145W TO 12N140W. WINDS 20 TO 25 KT WITHIN 180 NM
NE QUADRANT OF LOW.
.48 HOUR FORECAST LOW 14N161W 1011 MB. TROUGH FROM LOW TO
14N150W TO 10N140W. WINDS EASED TO 20 KT OR LESS.

.FRONT FROM 30N170W TO 24N180E TO 22N170E TO 23N160E NEARLY
STATIONARY. ISOLATED MODERATE TSTMS WITHIN 60 NM OF LINE FROM
30N169W TO 28N170W...AND WITHIN 75 NM OF FRONT W OF 178E.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N171W TO 25N180E TO
22N160E.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N172W TO
24N177E.

.TROUGH FROM 10N167E TO 05N166E TO 02N163E MOVING W 15 KT.
ISOLATED TO LOCALLY SCATTERED MODERATE TO STRONG TSTMS FROM 04N
TO 10N BETWEEN 162E AND 173E...AND FROM 02N TO 04N W OF 166E.
.24 HOUR FORECAST TROUGH FROM 10N163E TO 07N160E.
.48 HOUR FORECAST TROUGH MOVED FAR W OF FORECAST AREA.

.TROUGH FROM 14N171W TO 06N175W MOVING W 10 KT. ISOLATED
MODERATE TSTMS WITHIN 60 NM OF TROUGH N OF 09N.
.24 HOUR FORECAST TROUGH FROM 12N173W TO 06N178W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.HIGH 29N165E 1017 MB MOVING E 15 KT...WILL ACCELERATE E AFTER
12 HOURS. RIDGE FROM 29N160E TO HIGH TO 28N175E TO 28N179W.
.24 HOUR FORECAST HIGH 30N178E 1020 MB.
.48 HOUR FORECAST HIGH 30N178W 1020 MB.

.RIDGE FROM 30N164W TO 23N176W MOVING N SLOWLY AND GRADUALLY
ERODING FROM THE W.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST
AREA.

.SEAS 8 TO 10 FT N OF A LINE FROM 28N178W TO 22N172E TO 22N160E.
.24 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 11N TO 16N BETWEEN 173E AND
177E...AND WITHIN 60 NM OF A LINE FROM 17N167E TO 16N160E.

$$

.FORECASTER KINEL. HONOLULU HI.


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