High Seas Forecast
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000
FZPN02 KWBC 221125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC FRI SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 22.
24 HOUR FORECAST VALID 0600 UTC SEP 23.
48 HOUR FORECAST VALID 0600 UTC SEP 24.

.WARNINGS.

...GALE WARNING...
.LOW 59N148W 1002 MB MOVING NE 15 KT. WITHIN 90 NM NE OF A LINE
FROM 60N148W TO 57N138W WINDS 25 TO 35 KT. SEAS TO 11 FT.
ELSEWHERE OVER FORECAST WATERS N OF 53N E OF 151W...AND WITHIN
180 NM E OF A LINE FROM 53N147W TO 40N161W WINDS 20 TO 30 KT.
SEAS TO 11 FT.
.24 HOUR FORECAST LOW MOVED INLAND. WITHIN 240 NM E OF A LINE
FROM 53N144W TO 39N159W AREA OF SW WINDS 20 TO 30 KT. SEAS TO 9
FT.
.48 HOUR FORECAST FROM 45N TO 59N BETWEEN 131W AND 140W WINDS 20
TO 30 KT. SEAS TO 9 FT.

...GALE WARNING...
.LOW 49N170W 997 MB MOVING NE 20 KT. WITHIN 240 NM SE SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ALSO WITHIN 720 NM N AND NW
OF A LINE FROM 43N170W TO 54N151W WINDS 20 TO 30 KT. SEAS 8 TO
15 FT.
.24 HOUR FORECAST LOW 53N159W 998 MB. WITHIN 300 NM S AND W
SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 11 FT. ELSEWHERE N OF 47N
BETWEEN 147W AND 172W WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 57N152W 994 MB. WITHIN 120 NM NE OF A LINE
FROM 60N148W TO 58N143W WINDS 25 TO 35 KT. SEAS TO 11 FT. ALSO
WITHIN 240 NM S SEMICIRCLE...AND N OF 53N BETWEEN 160W AND 180W
WINDS TO 25 KT. SEAS TO 8 FT.

...GALE WARNING...
.LOW 38N177W 1012 MB MOVING NE 20 KT. FROM 34N TO 39N BETWEEN
174W AND 180W WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 42N166W 1007 MB. WITHIN 300 NM S AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 47N151W 1003 MB. WITHIN 300 NM E AND S OF
A LINE FROM 48N147W TO 44N154W WINDS 25 TO 35 KT. SEAS 8 TO 14
FT.

...GALE WARNING...
.LOW 40N171E 1010 MB MOVING E 15 KT. WITHIN 180 NM SE OF A FRONT
FROM LOW TO 34N162E WINDS TO 25 KT. SEAS TO 8 FT.
.12 HOUR FORECAST LOW 40N176E 1005 MB. FROM 33N TO 37N BETWEEN
180W AND 169E WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 40N180W 1003 MB. WITHIN 540 NM S AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11 FT. ALSO WITHIN 240 NM
NW SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 41N167W 1002 MB. WITHIN 360 NM S OF A LINE
FROM 44N154W TO 39N174W WINDS 20 TO 30 KT. SEAS TO 11 FT. ALSO
WITHIN 360 NM NW SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 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.

.OVER FORECAST WATERS NE OF A LINE FROM 31N120W TO 40N136W TO
48N134W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST FROM 32N TO 43N BETWEEN 119W AND 128W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 33N TO 43N BETWEEN 120W AND 129W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS TO 10 FT.

.LOW JUST W OF AREA 43N159E 1004 MB MOVING E 25 KT. OVER
FORECAST WATERS W OF A LINE FROM 35N160E TO 42N168E TO 46N163E
WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 41N172E 1009 MB. FROM 35N TO 43N BETWEEN
172E AND 162E WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 420 NM S OF
A LINE FROM 55N144W TO 52N153W TO 46N161W.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 56N BETWEEN 142W AND
156W.
.48 HOUR FORECAST DENSE FOG WITHIN 240 NM SE OF A LINE FROM
49N145W TO 42N164W.

.HIGH 41N144W 1033 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH 42N141W 1028 MB.
.48 HOUR FORECAST HIGH 41N137W 1027 MB.

.HIGH 30N174E 1021 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH S OF AREA.

.24 HOUR FORECAST HIGH 55N174E 1024 MB.
.48 HOUR FORECAST HIGH 52N172E 1024 MB.

.48 HOUR FORECAST HIGH 47N163E 1024 MB.

.FORECASTER KELLS. 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 FRI SEP 22.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 23.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 24.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 16.5N104.5W 1007 MB. SE QUADRANT WITHIN 300 NM SW
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
18N105W 1005 MB. WITHIN 120 NM SW SEMICIRCLE WINDS 20 TO 25 KT.
SEAS 8 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
18.5N105.5W 1004 MB. WITHIN 60 NM NE AND 90 NM SW SEMICIRCLES
WINDS 20 TO 25 KT. SEAS TO 9 FT.

.FROM 08N TO 12N BETWEEN 110W AND 116W SW TO W WINDS 20 TO 25
KT. SEAS TO 9 FT.
.24 HOUR FORECAST FROM 09N TO 13N BETWEEN 99W AND 122W SW WINDS
20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST FROM 09N TO 13N BETWEEN 110W AND 114W SW TO W
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE FROM 08N TO 14N
BETWEEN 101W AND 117W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SE
SWELL AND SW WIND WAVES.

.POST-TROPICAL REMNANT LOW NORMA NEAR 22N116W 1010 MB. WITHIN
270 NM W QUADRANT WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED
SWELL.
.18 HOUR FORECAST LOW DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS
THAN 8 FT.

.N OF 25N BETWEEN 117W AND 127W WINDS 20 KT OR LESS. SEAS TO 8
FT PRIMARILY IN NW TO N SWELL.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF CALIFORNIA N OF 29.5N SW WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.S OF 02S BETWEEN 87W AND 105W WINDS 20 KT OR LESS. SEAS 8 FT IN
SE SWELL.
.12 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 0830 UTC FRI SEP 22...

INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 09N73W TO 08N79W TO 13N90W TO LOW PRES 1007
MB NEAR 16.5N104.5W TO 14N115W TO 12N119W TO 12N128W TO LOW PRES
1012 MB NEAR 11N137W TO BEYOND 12N140W. SCATTERED MODERATE
ISOLATED STRONG WITHIN 60 NM NE AND 210 NM SW OF TROUGH BETWEEN
87W AND 96W...FROM 16N TO 20N BETWEEN 105W AND 108W AND FROM 07N
TO 11N BETWEEN 135W AND 140W. SCATTERED MODERATE ALONG AND UP TO
210 NM S OF TROUGH AXIS BETWEEN 97W AND 133W.

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0600 UTC SEP 22 2017.
24 HOUR FORECAST VALID 0600 UTC SEP 23 2017.
48 HOUR FORECAST VALID 0600 UTC SEP 24 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 12N160W 1011 MB MOVING N SLOWLY. ISOLATED MODERATE TO
LOCALLY STRONG TSTMS WITHIN 270 NM SW QUADRANT...AND WITHIN 240
NM NE QUADRANT OF LOW.
.24 HOUR FORECAST LOW 15N161W 1011 MB.
.48 HOUR FORECAST LOW 15N163W 1011 MB.

.FRONT FROM 30N170W TO 24N173E TO 22N162E NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 60 NM OF FRONT W OF 174E.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N174W TO
24N174E.
.48 HOUR FORECAST WEAK TROUGH FROM 29N177W TO 24N174E.

.TROUGH FROM 15N162E TO 13N160E MOVING W 10 KT. SCATTERED
MODERATE TO STRONG TSTMS FROM 04N TO 14N W OF 173E.
.24 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.HIGH 30N174E 1021 MB MOVING WSW 15 KT. RIDGE FROM HIGH TO
28N160E NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 29N166E 1018 MB.
.48 HOUR FORECAST HIGH 28N167E 1017 MB.

.RIDGE FROM 30N163W TO 26N174W NEARLY STATIONARY.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LOWER OVER ENTIRE FORECAST
AREA.

.MONSOON TROUGH FROM 12N140W TO 14N148W TO 14N158W TO LOW TO
07N167W. SEE TSTMS ASSOCIATED WITH LOW ABOVE. ISOLATED MODERATE
TSTMS ELSEWHERE WITHIN 180 NM OF MONSOON TROUGH.

$$

.FORECASTER HOUSTON. HONOLULU HI.



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