High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 211125
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1145 UTC SAT OCT 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

THE U.S. COAST GUARD IS CURRENTLY EXPERIENCING DEGRADATION IN
IMAGE QUALITY OF ALL HFFAX PRODUCTS. TROUBLESHOOTING OF THE
PROBLEM IS TAKING PLACE.

SECURITE

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

SYNOPSIS VALID 0600 UTC OCT 21.
24 HOUR FORECAST VALID 0600 UTC OCT 22.
48 HOUR FORECAST VALID 0600 UTC OCT 23.

.WARNINGS.

...STORM WARNING...
.LOW 53N148W 980 MB MOVING NE 15 KT. FRONT EXTENDS FROM 47N131W
TO 41N150W TO 37N165W. FROM 47N TO 53N BETWEEN 139W AND
147W...ALSO WITHIN 180 NM S AND SE OF FRONT E OF 155W...WITHIN
120 NM NE OF A SECOND FRONT THAT EXTENDS FROM 52N142W TO
47N131W...AND FROM 40N TO 45N BETWEEN 126W AND 133W...ALSO FROM
43N TO 46N BETWEEN 146W AND 150W WINDS 25 TO 35 KT. SEAS 9 TO 19
FT. ELSEWHERE FROM 38N TO 52N E OF 148W WINDS 20 TO 30 KT. SEAS
8 TO 13 FT.
.12 HOUR FORECAST LOW 55N141W 973 MB. WITHIN 60 NM N AND NE OF A
LINE FROM 56N139W TO 56N137W TO 51N130W WINDS 35 TO 50 KT. SEAS
10 TO 18 FT.
.24 HOUR FORECAST LOW 55N140W 976 MB. FROM 45N TO 52N BETWEEN
128W AND 136W...AND FROM 45N TO 47N BETWEEN 148W AND 155W...ALSO
WITHIN 180 NM W AND SW QUADRANTS...AND WITHIN 180 NM S AND SE OF
FRONT FROM 47N124W TO 42N134W WINDS 25 TO 40 KT. SEAS 9 TO 19
FT. ELSEWHERE FROM 42N TO 48N E OF 157W...AND FROM 43N TO 59N E
OF 148W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

...STORM WARNING...
.LOW 35N160E 1014 MB MOVING E 60 KT. FROM 36N TO 39N W OF 170E
WINDS 25 TO 40 KT. SEAS 10 TO 16 FT. ELSEWHERE WITHIN 240 NM N
OF A LINE FROM 36N160E TO 35N170E TO 34N176E WINDS 20 TO 30 KT.
SEAS TO 12 FT.
.24 HOUR FORECAST LOW 35N168W 1012 MB. FROM 33N TO 36N BETWEEN
166W AND 175E WINDS 25 TO 35 KT. SEAS 9 TO 14 FT. ELSEWHERE FROM
32N TO 37N BETWEEN 163W AND 180W WINDS 20 TO 30 KT. SEAS TO 12
FT.
.48 HOUR FORECAST LOW 44N149W 996 MB. FRONT WILL EXTEND FROM
CENTER TO 40N152W TO 35N156W TO 30N163W. WITHIN 180 NM SE
SEMICIRCLE WINDS 35 TO 50 KT. SEAS 14 TO 23 FT. ELSEWHERE WITHIN
120 NM NW...180 NM NE AND 420 NM SE QUADRANTS...AND FROM 44N TO
47N BETWEEN 137W AND 144W...ALSO WITHIN 180 NM SE OF FRONT WINDS
25 TO 40 KT. SEAS 9 TO 18 FT. ALSO FROM 40N TO 48N BETWEEN 135W
AND 152W...AND WITHIN 540 NM E OF FRONT WINDS 20 TO 30 KT. SEAS
TO 12 FT.

...GALE WARNING...
.LOW 51N157W 979 MB MOVING E 15 KT. FROM 40N TO 49N BETWEEN 150W
AND 170W...ALSO FROM 49N TO 53N BETWEEN 163W AND 169W WINDS 25
TO 40 KT. SEAS 14 TO 28 FT. ELSEWHERE EXCEPT WHERE DESCRIBED BY
STORM 53N148W. BETWEEN 50N AND A LINE EXTENDING FROM 50N177E TO
39N170W TO 36N162W TO 37N145W WINDS 20 TO 30 KT. SEAS 9 TO 18
FT. .24 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW
55N140W.

...GALE WARNING...
.LOW 64N165W 986 MB MOVING S 10 KT. N OF 60N W OF 170W...AND
FROM 63N TO 65N BETWEEN 165W AND 168W WINDS 25 TO 35 KT. SEAS TO
12 FT. ELSEWHERE N OF A LINE FROM 53N166E TO 50N171E TO 50N169W
WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 61N164W 987 MB. N OF 59N W OF 170W WINDS
25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE N OF 40N BETWEEN 170W
AND 169E...AND N OF 57N W OF 165W WINDS 20 TO 30 KT. SEAS 8 TO
13 FT. .48 HOUR FORECAST LOW 60N163W 997 MB. N OF 50N BETWEEN
170W AND 180W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...GALE WARNING...
.FROM 32N TO 35N BETWEEN 118W AND 122W AREA OF NW WINDS 25 TO 35
KT. SEAS 10 TO 17 FT WITH NW SWELL.
.24 HOUR FORECAST FROM 30N TO 36N BETWEEN 120W AND 124W AREA OF
NW WINDS 20 TO 30 KT. SEAS 8 TO 13 FT WITH NW SWELL.
.48 HOUR FORECAST FROM 32N TO 39N BETWEEN 121W AND 125W AREA OF
N WINDS TO 25 KT. SEAS TO 11 FT.

...GALE WARNING...
.24 HOUR FORECAST FROM 32N TO 40N W OF 180W WINDS 20 TO 30 KT.
SEAS 9 TO 16 FT.
.48 HOUR FORECAST N OF 38N W OF 167E WINDS 30 TO 45 KT. SEAS 10
TO 20 FT. ELSEWHERE S OF 40N W OF 170E...AND S OF 34N BETWEEN
170E AND 180W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.24 HOUR FORECAST LOW 52N165W 999 MB. FROM 47N TO 52N BETWEEN
164W AND 170W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 56N155W 998 MB. WITHIN 180 NM OF CENTER
WINDS 25 TO 35 KT. SEAS TO 12 FT.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST S OF 50N BETWEEN 160W AND 180W WINDS 20 TO 30
KT. SEAS 8 TO 14 FT.

.HIGH 33N131W 1026 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH LITTLE CHANGE.
.48 HOUR FORECAST HIGH 36N131W 1031 MB.

.HIGH 47N158E 1034 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 46N166E 1035 MB.
.48 HOUR FORECAST HIGH 43N174E 1034 MB.

.FORECASTER SHAW. 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 OCT 21.
24 HOUR FORECAST VALID 0600 UTC SUN OCT 22.
48 HOUR FORECAST VALID 0600 UTC MON OCT 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 26N WITHIN 180 NM W OF BAJA CALIFORNIA PENINSULA NW WINDS
20 TO 25 KT. SEAS 8 TO 12 FT IN NW SWELL. ELSEWHERE N OF LINE
FROM 26N113W TO 12N140W WINDS 20 KT OR LESS. SEAS 8 TO 15 FT IN
NW SWELL...HIGHEST NEAR 30N128W.
.24 HOUR FORECAST N OF 22N BETWEEN 115W AND 125W WINDS 20 KT OR
LESS. SEAS 12 TO 14 FT IN NW SWELL. ELSEWHERE WITHIN AREA
BOUNDED BY 30N116W TO 20N109W TO 08N125W TO 08N140W TO 30N140W
TO 30N116W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST W OF LINE FROM 30N116W TO 19N105W TO 05N108W
TO 03.4S117W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED S AND
NW SWELL.

.S OF 02S W OF 118W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SE
AND SW SWELL.
.24 HOUR FORECAST S OF 02S W OF 110W WINDS 20 KT OR LESS. SEAS 8
FT IN MIXED SE AND SW SWELL.
.48 HOUR FORECAST CONDITIONS MERGED.

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

.42 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND
95.5W N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST WITHIN 45 NM OF LINE 16N95W TO 14N95W...
INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 KT.
SEAS 8 TO 10 FT.

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

CONVECTION VALID AT 0900 UTC SAT OCT 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 08.5N94W TO 08.5N110W. ITCZ FROM
08.5N110W TO 09N140W. SCATTERED MODERATE TO STRONG FROM 11N TO
14N BETWEEN 90W AND 93W. SCATTERED MODERATE ISOLATED STRONG FROM
06N TO 10N BETWEEN 90W AND 102W. SCATTERED MODERATE ISOLATED
STRONG FROM 06N TO 09N BETWEEN 112W AND 118W. SCATTERED MODERATE
ISOLATED STRONG FROM 08N TO 10N BETWEEN 134W AND 136W.

.FORECASTER AL. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0600 UTC OCT 21 2017.
24 HOUR FORECAST VALID 0600 UTC OCT 22 2017.
48 HOUR FORECAST VALID 0600 UTC OCT 23 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 27N145W 21N147W 17N148W MOVING W 10 KT. ISOLATED
MODERATE TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST WEAKENING TROUGH 27N150W 15N151W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.36 HOUR FORECAST FRONT 30N170W 29N178E 30N170E. WINDS 20 TO 25
KT N OF 29N BETWEEN 160W AND 170E.
.48 HOUR FORECAST FRONT 30N162W 26N170W 25N179W 27N170E 30N164E.
WINDS 20 TO 30 KT N OF FRONT.

.NE WINDS 20 TO 30 KT FROM 10N TO 27N BETWEEN 145W AND 172W.
.24 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 10N TO 25N E OF
153W.
.48 HOUR FORECAST E TO NE WINDS 20 TO 25 KT FROM 10N TO 24N E OF
152W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 12 FT N OF LINE 15N160E 07N180W 04N154W 12N140W.
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 13N160E 09N172W
09N160W 12N153W 09N140W.
.48 HOUR FORECAST SEAS 12 TO 14 FT N OF LINE 30N166E 28N172E
28N178E 30N178W. SEAS 8 TO 12 FT ELSEWHERE N OF LINE 15N160E
15N167E 26N175E 16N178W 16N168W 22N158W 10N150W 08N140W.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ITCZ 10N140W 11N150W 08N170W 10N175E. ISOLATED MODERATE TSTMS
WITHIN 180 NM OF ITCZ.

.ISOLATED MODERATE TSTMS W OF 178W BETWEEN 03N AND 14N.

$$

.FORECASTER POWELL. HONOLULU HI.


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