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East and Central North Pacific High Seas Forecast

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FZPN02 KWBC 171725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC SUN DEC 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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). 

SECURITE 

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

SYNOPSIS VALID 1200 UTC DEC 17. 
24 HOUR FORECAST VALID 1200 UTC DEC 18. 
48 HOUR FORECAST VALID 1200 UTC DEC 19. 

.WARNINGS. 

...STORM WARNING...
.LOW 48N166E 984 MB MOVING N 25 KT AND RAPIDLY INTENSIFYING. 
WITHIN 300 NM NE AND SE QUADRANTS WINDS 40 TO 50 KT. SEAS 15 TO 
24 FT. ELSEWHERE OVER FORECAST WATERS W OF A LINE FROM 30N176E 
TO 50N178W TO 59N178E WINDS 25 TO 40 KT. SEAS 10 TO 20 FT.
.12 HOUR FORECAST LOW JUST NW OF FORECAST AREA 56N171E 959 MB. 
WITHIN 600 NM SE QUADRANT WINDS 45 TO 55 KT. SEAS 18 TO 34 FT.
.24 HOUR FORECAST LOW NW OF AREA 58N169E 941 MB. WITHIN 540 NM 
SW SEMICIRCLE...AND WITHIN 180 NM EITHER SIDE OF A LINE FROM 
58N172W TO 50N173W TO 39N180W WINDS 40 TO 50 KT. SEAS 18 TO 34 
FT. ALSO WITHIN 900 NM E...1200 NM SE...AND 1260 NM S QUADRANTS 
WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ELSEWHERE S OF 40N W OF 
170E WINDS TO 25 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW JUST NW OF FORECAST AREA 61N178E 957 MB. 
WITHIN 300 NM SE AND 180 NM SW QUADRANTS WINDS 40 TO 50 KT. SEAS 
25 TO 40 FT. ALSO WITHIN 480 NM NE...840 NM SE AND SW...AND 960 
NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ELSEWHERE 
WITHIN 1200 NM S QUADRANT WINDS TO 25 KT. SEAS 10 TO 18 FT.

...GALE WARNING...
.LOW 33N119W 1009 MB MOVING SE 15 KT. OVER FORECAST WATERS FROM 
30N TO 42N BETWEEN 120W AND 131W AREA OF N WINDS 25 TO 35 KT. 
SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW DISSIPATED. E OF A LINE FROM 30N134W TO 
41N126W AND W OF 120W WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.OVER FORECAST WATERS WITHIN AN AREA BOUNDED BY 42N150W TO 
30N168W TO 30N174E TO 35N179E TO 40N165W TO 42N150W WINDS 25 TO 
40 KT...HIGHEST WITHIN 180 NM SE OF A LINE FROM 31N175W TO 
36N163W. SEAS 10 TO 20 FT.
.24 HOUR FORECAST WITHIN AN AREA BOUNDED BY 30N180W TO 44N155W 
TO 43N141W TO 30N157W TO 30N180W WINDS 25 TO 40 KT...HIGHEST 
WITHIN 180 NM SE OF A LINE FROM 40N153W TO 34N161W. SEAS 10 TO 
20 FT.
.48 HOUR FORECAST NEW LOW 36N145W 1011 MB. WITHIN 900 NM 
SW...540 NM NW...AND 480 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 
10 TO 20 FT. ELSEWHERE WITHIN 300 NM SE QUADRANT WINDS 20 TO 30 
KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.LOW 57N160W 992 MB MOVING E 20 KT WITH SECOND LOW 59N152W 991 
MB MOVING E 15 KT. WITHIN 420 NM NW AND 480 NM SW QUADRANTS OF 
FIRST LOW...AND WITHIN 660 NM S QUADRANT OF SECOND LOW WINDS 25 
TO 40 KT. SEAS 11 TO 22 FT. ELSEWHERE WITHIN 540 NM NW...660 NM 
SW...AND 840 NM S QUADRANTS OF FIRST LOW...AND WITHIN 720 NM S 
AND 480 NM E QUADRANTS OF SECOND LOW WINDS 20 TO 30 KT. SEAS 8 
TO 16 FT.
.24 HOUR FORECAST FIRST LOW DISSIPATED WITH SECOND LOW 58N141W 
1005 MB. WITHIN 180 NM NW OF A LINE FROM 55N155W TO 57N148W AREA 
OF NW WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ALSO WITHIN 840 NM SW 
QUADRANT WINDS 20 TO 30 KT. SEAS 9 TO 18 FT. ELSEWHERE WITHIN 
540 NM SE QUADRANT WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW DISSIPATED. FROM 46N TO 55N BETWEEN 134W 
AND 145W AREA OF N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 47N127W 1004 MB. WITHIN 600 NM SW 
QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE OVER 
FORECAST WATERS WITHIN 180 NM NE QUADRANT WINDS 20 TO 30 KT. 
SEAS 8 TO 14 FT.

...GALE WARNING...
.48 HOUR FORECAST WITHIN 180 NM EITHER SIDE OF A LINE FROM 
58N156W TO 51N158W TO 48N161W WINDS 25 TO 35 KT. SEAS 12 TO 22 
FT. ELSEWHERE WITHIN 180 NM EITHER SIDE OF A LINE FROM 48N161W 
TO 39N172W WINDS 20 TO 30 KT. SEAS 9 TO 18 FT.

...GALE WARNING...
.48 HOUR FORECAST...EXCEPT AS DESCRIBED WITH LOW 61N178E 
ABOVE...OVER FORECAST WATERS W OF A LINE FROM 36N160E TO 48N169E 
WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS N OF A 
LINE FROM 61N177W TO 62N167W. 
.24 HOUR LIGHT TO MODERATE FREEZING SPRAY N OF 63N W OF ALASKA. 
.48 HOUR FORECAST CONDITIONS IMPROVING. 

.SYNOPSIS AND FORECAST. 

.LOW 50N127W 1015 MB MOVING E 15 KT. OVER FORECAST WATERS WITHIN 
180 NM EITHER SIDE OF A LINE FROM 51N126W TO 43N145W WINDS 20 TO 
30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED. FROM 44N TO 49N E OF 130W 
WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 47N127W IN 
WARNINGS SECTION ABOVE.

.OVER FORECAST WATERS S OF A LINE FROM 30N164W TO 40N149W WINDS 
TO 25 KT. SEAS TO 11 FT. 
.24 HOUR FORECAST WITHIN 180 NM EITHER SIDE OF A LINE FROM 
44N134W TO 37N144W TO 30N149W WINDS TO 25 KT. SEAS TO 11 FT. 
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 36N145W IN 
WARNINGS SECTION ABOVE. 

.48 HOUR FORECAST WITHIN 180 NM NW OF A LINE FROM 37N176W TO 
30N168E AREA OF NE WINDS TO 25 KT. SEAS TO 12 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST 
WATERS WITHIN 180 NM EITHER SIDE OF A LINE FROM 50N168E TO 
39N162E AND WITHIN 120 NM OF 42N145W.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM EITHER SIDE OF A LINE 
FROM 51N176W TO 45N179W.
.36 HOUR FORECAST DENSE FOG N OF 57N BETWEEN 164W AND 171W.
.48 HOUR FORECAST CONDITIONS IMPROVING.

.HIGH 38N135W 1029 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 37N133W 1026 MB.
.48 HOUR FORECAST HIGH 35N126W 1023 MB.

.HIGH 42N175W 1037 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH 45N163W 1038 MB.
.48 HOUR FORECAST HIGH 46N154W 1036 MB.

.48 HOUR FORECAST HIGH 39N171E 1033 MB. 

.FORECASTER FIGURSKEY. 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 1200 UTC SUN DEC 17.
24 HOUR FORECAST VALID 1200 UTC MON DEC 18.
48 HOUR FORECAST VALID 1200 UTC TUE DEC 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 31N113W 1005 MB WITH COLD FRONT TO 27N114W TO 
24N117W. N OF 27N BETWEEN 121W AND 128W N WINDS 20 TO 25 KT. 
SEAS 10 TO 16 FT IN NW TO N SWELL. ELSEWHERE N OF LINE FROM 
24.5N114W TO 24N129W TO 27.5N134W WINDS 20 KT OR LESS. SEAS 8 TO 
11 FT NW TO N SWELL.
.12 HOUR FORECAST DISSIPATING COLD FRONT FROM 24N111W TO 
20N112W. N OF 22N BETWEEN 113W AND 134W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN NW TO N SWELL.
.24 HOUR FORECAST COLD FRONT DISSIPATED. N OF 20W BETWEEN 112W 
AND 136W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW TO N SWELL. 
.48 HOUR FORECAST FROM 13N TO 18N BETWEEN 115W AND 130W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED NW TO N SWELL AND NE WIND 
WAVES.

.W OF LINE FROM 27.5N134W TO 10N111W TO 03.4S118W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN NW SWELL AND NE WIND WAVES.
.24 HOUR FORECAST W OF LINE FROM 12N103W TO 03.4S115W WINDS 20 
KT OR LESS. SEAS TO 9 FT IN NW SWELL AND NE WIND WAVES.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF CALIFORNIA LOW PRES NEAR 31N113W 1005 MB WITH COLD 
FRONT TO BEYOND 28.5N113.5W. E OF FRONT TO 111W S TO SW WINDS 20 
TO 25 KT. SEAS LESS THAN 8 FT. N OF 30N AND W OF 113.5W NW WINDS 
20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW NE OF AREA AND COLD FRONT DISSIPATED. 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 10N TO 12N E OF 88W...INCLUDING GULF OF PAPAGAYO...NE 
TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.12 HOUR FORECAST FROM 09.5N TO 11.5N E OF 89W...INCLUDING GULF 
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST FROM 10N TO 11.5N E OF 88W...INCLUDING GULF OF 
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 08.5N 
TO 11N BETWEEN 88W AND 92W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN MIXED NW AND NE SWELL.
.36 HOUR FORECAST FROM 08N TO 11N BETWEEN 90W AND 94W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST FROM 10N TO 12N E OF 88W...INCLUDING GULF OF 
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.18 HOUR FORECAST N OF 14.5N BETWEEN 94W AND 95W...INCLUDING 
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING 
GULF OF TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST N OF 14.5N BETWEEN 94.5W AND 95.5W...INCLUDING 
GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 1430 UTC SUN DEC 17...

.SCATTERED MODERATE ISOLATED STRONG FROM 02N TO 06N BETWEEN 78W 
AND 81W.

.SCATTERED MODERATE ISOLATED STRONG FROM 13N TO 17N BETWEEN 
106W AND 112W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 05.5N96W TO 10N123W TO 10N140W. NO SIGNIFICANT 
CONVECTION.


.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 1200 UTC DEC 17 2017.
24 HOUR FORECAST VALID 1200 UTC DEC 18 2017.
48 HOUR FORECAST VALID 1200 UTC DEC 19 2017.

.WARNINGS. 

...GALE WARNING... 
.FRONT FROM 30N168W TO 24N180W TO 23N170E MOVING E TO 25 KT. NE 
WINDS 25 TO 35 KT BETWEEN FRONT AND 180W. NE TO E WINDS 20 TO 
305 KT ELSEWHERE N OF FRONT. 
.24 HOUR FORECAST FRONT FROM 30N157W TO 24N170W TO 20N177E TO 
20N170E. NE WINDS 25 TO 40 KT BETWEEN FRONT AND 180W. NE TO E 
WINDS 20 TO 25 KT ELSEWHERE N OF FRONT. 
.48 HOUR FORECAST FRONT FROM 30N150W TO 24N160W TO 20N180W. NE 
TO E WINDS 20 TO 30 KT N OF FRONT. 

.SYNOPSIS AND FORECAST. 

.LOW 24N159W 1008 MB MOVING NEAR N 10 KT AND DISSIPATING. TROUGH 
FROM 30N157W TO LOW TO 21N161W. E TO SE WINDS 20 TO 25 KT N OF A 
LINE FROM 30N155W TO 21N150W. WIDELY SCATTERED TSTMS N OF 20N 
BETWEEN 145W AND 160W. 
.24 HOUR FORECAST LOW AND TROUGH MERGED WITH FRONT DESCRIBED 
ABOVE. S TO SE WINDS 20 TO 25 KT N OF 24N BETWEEN 148W AN 152W. 
.48 HOUR FORECAST S WINDS DIMINISHED TO 20 KT OR LESS. 

.TROUGH FROM 20N154W TO 16N155W TO 10N162W TO 03N172W MOVING W 
NEAR 10 KT. ISOLATED TSTMS WITHIN 120 NM OF TROUGH. 
.24 HOUR FORECAST TROUGH FROM 20N156W TO 10N167W TO 01N176W. 
.48 HOUR FORECAST TROUGH FROM 20N160W TO 13N167W TO 03N178W. 

.TROUGH 13N141W TO 08N144W MOVING W 10 KT. 
.24 HOUR FORECAST TROUGH 13N145W TO 08N149W. 
.48 HOUR FORECAST TROUGH 13N150W TO 08N153W. 

.NE TO E WINDS 20 TO 25 KT FROM 06N TO 20N W OF 180W. 
.24 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 06N TO 20N W OF 
180W. 
.48 HOUR FORECAST NE TO E WINDS 20 TO 25 KT FROM 08N TO 23N W OF 
175E. 

.NEW FRONT W OF FORECAST AREA AT 30N154E TO 24N146E MOVING E 20 
KT. 
.24 HOUR FORECAST FRONT 30N167E TO 26N160E. 
.48 HOUR FORECAST FRONT FROM 30N169E TO 26N160E. 

.RIDGE FROM 30N162E TO 29N160E MOVING SE 10 KT AND ERODING FROM 
W. 

.SEAS 10 TO 17 FT N OF A LINE FROM 30N167W TO 24N180W TO 
24N175E. SEAS 8 TO 10 FT ELSEWHERE N OF A LINE FROM 30N164W TO 
23N180W TO 23N170E. SEAS 8 TO 10 FT N OF 22N BETWEEN 145W AND 
170W...AND ALSO BETWEEN 05N AND 20N W OF 170W. SEAS 8 TO 9 FT 
BETWEEN 10N AND 20N E OF 150W. 
.24 HOUR FORECAST SEAS 12 TO 20 FT N OF A LINE FROM 30N157W TO 
27N160W TO 21N180W TO 22N175E. SEAS 8 TO 12 FT ELSEWHERE N OF A 
LINE FROM 30N154W TO 26N158W TO 19N175W TO 19N167E. SEAS 8 TO 10 
FT N OF 23N BETWEEN 144W AND 156W. SEAS 8 TO 9 FT BETWEEN 19N 
AND 06N W OF 180W. 
.48 HOUR FORECAST SEAS 12 TO 15 FT N OF A LINE FROM 30N152W TO 
25N160W TO 20N180W TO 20N174E. SEAS 8 TO 12 FT ELSEWHERE N OF A 
LINE FROM 30N143W TO 15N170W 09N160E. 

.OTHERWISE WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER REST 
OF AREA. 

.WIDELY SCATTERED MODERATE TSTMS S OF 07N W OF 177E. 


$$ 

.FORECASTER LAU. HONOLULU HI.