High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 170343
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SUN DEC 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

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

SECURITE

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

SYNOPSIS VALID 0000 UTC DEC 17.
24 HOUR FORECAST VALID 0000 UTC DEC 18.
48 HOUR FORECAST VALID 0000 UTC DEC 19.

.WARNINGS.

...STORM WARNING...
.OVER FORECAST WATERS W OF A LINE FROM 33N166E TO 43N173E TO
53N174E WINDS 30 TO 45 KT. SEAS 9 TO 18 FT.
.12 HOUR FORECAST LOW 48N166E 985 MB AND RAPIDLY INTENSIFYING.
WITHIN 300 NM E OF A LINE FROM 52N170E TO 43N162E TO 38N160E
AREA OF S TO SW WINDS 40 TO 55 KT. SEAS 15 TO 27 FT.
.24 HOUR FORECAST LOW JUST NW OF AREA 57N172E 960 MB. FRONT TO
EXTEND FROM LOW TO 45N174E THROUGH 30N158E. N OF 36N WITHIN 360
NM E AND NE OF FRONT WINDS 45 TO 60 KT. SEAS 18 TO 36 FT. ALSO
WITHIN 660 NM E AND NE OF FRONT...AND N OF 44N W OF FRONT WINDS
30 TO 45 KT. SEAS 12 TO 24 FT. ELSEWHERE S OF 44N W OF FRONT
WINDS 20 TO 30 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW NW OF AREA 59N169E 948 MB. FRONT TO EXTEND
FROM 63N172W TO 60N168W TO 50N169W TO 42N174W TO 30N166E. WITHIN
540 NM S AND 420 NM SE QUADRANTS WINDS 40 TO 50 KT. SEAS 25 TO
35 FT. ALSO N OF 42N WITHIN 240 NM E AND NE OF FRONT WINDS 35 TO
45 KT. SEAS 17 TO 32 FT. ELSEWHERE N OF 45N W OF FRONT...AND
WITHIN 420 NM E AND NE OF FRONT WINDS 25 TO 40 KT. SEAS 13 TO 26
FT.

...GALE WARNING...
.LOW 33N119W 1004 MB MOVING SE 15 KT. OVER FORECAST WATERS FROM
30N TO 42N BETWEEN 119W AND 130W AREA OF N TO NW WINDS 25 TO 40
KT. SEAS 12 TO 20 FT.
.24 HOUR FORECAST LOW MOVED E OF AREA. FROM 30N TO 43N BETWEEN
123W AND 130W AREA OF N WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST WINDS LESS THAN 25 KT. SEAS LESS THAN 8 FT.

...GALE WARNING...
.LOW 61N147W 988 MB DRIFTING NW. OVER FORECAST WATERS WITHIN 120
NM NE OF A LINE FROM 55N132W TO 50N130W WINDS 25 TO 35 KT. SEAS
8 TO 13 FT. ELSEWHERE FROM 43N TO 60N BETWEEN 127W AND 150W
WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED. FROM 44N TO 48N E OF 134W
WINDS LESS THAN 25 KT. SEAS TO 11 FT.
.36 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.LOW 57N159W 984 MB MOVING E 15 KT. WITHIN AN AREA BOUNDED BY A
LINE FROM 49N150W TO 43N167W TO 52N177E TO 52N173W TO 58N155W TO
59N150W TO 49N150W WINDS 25 TO 40 KT. SEAS 12 TO 28 FT...HIGHEST
NEAR 51N162W.
.24 HOUR FORECAST LOW 58N147W 997 MB. WITHIN 660 NM S
QUADRANT...AND E OF 164W WITHIN 780 NM W QUADRANT WINDS 25 TO 40
KT. SEAS 9 TO 21 FT...HIGHEST IN S QUADRANT.
.48 HOUR FORECAST LOW 53N137W 1011 MB. FROM 48N TO 57N BETWEEN
137W AND 149W WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.

...GALE WARNING...
.LOW 60N165W 980 MB MOVING SE 20 KT. N OF THE ALEUTIAN ISLANDS
BETWEEN 164W AND 177E WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 58N147W
DESCRIBED ABOVE.

...GALE WARNING...
.WITHIN 660 NM W OF A FRONT FROM 30N173W TO 38N160W AREA OF NE
WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST WITHIN AN AREA BOUNDED BY A LINE FROM 30N161W
TO 42N145W TO 39N165W TO 30N175E TO 30N161W WINDS 25 TO 40 KT.
SEAS 11 TO 21 FT.
.48 HOUR FORECAST NEW LOW 34N151W 1010 MB. WITHIN 660 NM W OF A
LINE FROM 30N157W TO 44N137W WINDS 25 TO 40 KT. SEAS 12 TO 22
FT. ELSEWHERE FROM 30N TO 40N BETWEEN 144W AND THE LINE WINDS TO
25 KT. SEAS 8 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS N OF 63N
W OF 167W.
.24 HOUR MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF 168W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 65N W OF
168W.

.SYNOPSIS AND FORECAST.

.FROM 30N TO 33N BETWEEN 147W AND 165W WINDS LESS THAN 25 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST FROM 30N TO 34N BETWEEN 146W AND 154W WINDS
LESS THAN 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 34N151W IN
WARNINGS SECTION ABOVE.

.48 HOUR FORECAST NEW LOW 46N131W 1015 MB. FROM 41N TO 46N
BETWEEN 127W AND 137W WINDS TO 25 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS WITHIN 90 NM OF 42N146W...AND FROM 44N TO 50N W OF 166E.
.24 HOUR FORECAST DENSE FOG N OF 45N BETWEEN 177E AND 174E.
.48 HOUR FORECAST DENSE FOG N OF 57N BETWEEN 164W AND 171W.

.HIGH 39N135W 1031 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 38N136W 1026 MB.
.48 HOUR FORECAST HIGH 38N131W 1025 MB.

.HIGH 40N180W 1034 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH 42N170W 1037 MB.
.48 HOUR FORECAST HIGH 46N158W 1034 MB.

.48 HOUR FORECAST HIGH 36N164E 1030 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 0000 UTC SUN DEC 17.
24 HOUR FORECAST VALID 0000 UTC MON DEC 18.
48 HOUR FORECAST VALID 0000 UTC TUE DEC 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING GULF OF
TEHUANTEPEC... N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF 27N BETWEEN 116W AND 125W NW TO N WINDS 20 TO 25 KT. SEAS
10 TO 15 FT. N OF 27N BETWEEN 125W AND 130W N TO NE WINDS 20 TO
25 KT. SEAS 8 TO 10 FT. ELSEWHERE W OF LINE FROM 30N116W TO
10N120W TO 01N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
PRIMARILY IN NW SWELL.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 27N114W TO 25N120W.
N OF 22N W OF 114W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW TO
N SWELL. S OF LINE FROM 15N140W TO 10N120W TO 10N120W WINDS 20
KT OR LESS. SEAS 8 TO 9 FT PRIMARILY IN NW SWELL.
.48 HOUR FORECAST FRONT DISSIPATED N OF 21N W OF 128W WINDS 20
KT OR LESS. SEAS 8 TO 9 FT IN NW TO N SWELL. FROM 18N TO 22N
BETWEEN 113W AND 128 WINDS 20 KT OR LESS. SEAS 8 FT IN NW
TO N SWELL.

.GULF OF CALIFORNIA N OF 29N S TO SW WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 31N113W TO
28N113W. N OF 30N NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST FRONT DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.06 HOUR FORECAST FROM 10N TO 12N E OF 89W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 10N TO 12N E OF 88W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 10N TO 12N E OF 87W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
FROM 08N TO 10N BETWEEN 90W AND 93W WINDS 20 KT OR LESS. SEAS 8
FT IN NE SWELL.

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

CONVECTION VALID AT 0300 UTC SUN DEC 17...

.SCATTERED MODERATE ISOLATED STRONG WITHIN 30 NM EITHER SIDE OF
LINE FROM 16N102W TO 14N114W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 07N92W TO 07N101W TO 10N124W TO BEYOND 09N140W.
SCATTERED MODERATE AND ISOLATED STRONG WITHIN 60 NM N OF ITCZ
BETWEEN 102W AND 105W AND WITHIN 60 NM S OF ITCZ BETWEEN 110W
AND 115W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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