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North Pacific High Seas Forecast

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FZPN01 KWBC 180937
HSFEP1

HIGH SEAS FORECAST 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1030 UTC MON DEC 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 0600 UTC DEC 18. 
24 HOUR FORECAST VALID 0600 UTC DEC 19. 
48 HOUR FORECAST VALID 0600 UTC DEC 20. 

.WARNINGS. 

...STORM WARNING... 
.LOW NW OF AREA 59N172E 951 MB MOVING NE 05 KT. FRONT EXTENDS 
FROM 60N179W TO 50N179E TO 33N163E. WITHIN 240 NM NE AND E OF 
THE FRONT N OF 35N WINDS 40 TO 55 KT. SEAS 17 TO 33 FT. 
ELSEWHERE OVER FORECAST WATERS WITHIN 660 NM E...1440 NM 
SE...AND 1200 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 26 
FT. 
.24 HOUR FORECAST LOW NW OF AREA 60N175E 953 MB. FRONT TO EXTEND 
FROM 65N169W TO 60N164W TO 52N165W TO 40N173W. WITHIN 480 NM SE 
AND 540 NM S QUADRANTS WINDS 40 TO 50 KT. SEAS 22 TO 34 FT. 
ELSEWHERE WITHIN 540 NM E...840 NM SE...AND 780 NM SW 
QUADRANTS...AND 300 NM NE AND E OF THE FRONT WINDS 25 TO 40 KT. 
SEAS 12 TO 27 FT. 
.48 HOUR FORECAST LOW NW OF FORECAST AREA 67N175W 971 MB. WITHIN 
780 NM SE AND 840 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 
26 FT. 

...STORM WARNING... 
.48 HOUR FORECAST LOW 51N174E 988 MB. WITHIN 240 NM E AND 420 NM 
SE QUADRANTS WINDS 45 TO 60 KT. SEAS 18 TO 30 FT. ELSEWHERE OVER 
FORECAST WATERS WITHIN 480 NM E...720 NM SE...840 NM SW...AND 
120 NM W QUADRANTS WINDS 30 TO 45 KT. SEAS 11 TO 22 FT. 

...GALE WARNING... 
.FRONT EXTENDS FROM 43N142W TO 37N151W TO 30N160W. BETWEEN THE 
FRONT AND A LINE FROM 43N142W TO 37N166W TO 30N178E WINDS 25 TO 
35 KT. SEAS 11 TO 19 FT. 
.24 HOUR FORECAST LOW 32N154W 1011 MB. OVER FORECAST WATERS 
WITHIN 900 NM NE...660 NM W...AND 480 N NW QUADRANTS WINDS 25 TO 
40 KT. SEAS 12 TO 20 FT. 
.48 HOUR FORECAST LOW 33N154W 1000 MB. WITHIN 780 NM NE...420 NM 
E...480 NM W...AND 420 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 
11 TO 21 FT. 

...GALE WARNING... 
.24 HOUR FORECAST NEW LOW 46N129W 1009 MB. FRONT TO EXTEND FROM 
LOW TO 41N139W. WTHIN 180 NM EITHER SIDE OF THE FRONT WINDS 20 
TO 30 KT. SEAS 9 TO 12 FT. 
.48 HOUR FORECAST LOW INLAND 49N119W 1000 MB. OVER FORECAST 
WATERS WITHIN 600 NM SW AND 660 NM NW QUADRANTS WINDS 30 TO 45 
KT. SEAS 12 TO 19 FT. 

...HEAVY FREEZING SPRAY WARNING... 
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS 
N OF 61N AND W OF 167W. 
.24 HOUR FORECAST CONDITIONS IMPROVING.

.SYNOPSIS AND FORECAST. 

.LOW 58N144W 1002 MB MOVING SE 20 KT. WITHIN 540 NM SE...960 NM 
SW...AND 540 NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 12 TO 18 FT. 
.24 HOUR FORECAST LOW 52N132W 1013 MB. WITHIN 720 NM SW AND 540 
NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 11 TO 14 FT. 
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW 
49N119W DESCRIBED IN WARNINGS SECTION ABOVE. 

.OVER FORECAST WATERS FROM 37N TO 41N BETWEEN 124W AND 127W AREA 
OF N WINDS TO 25 KT. SEAS TO 11 FT. 
.24 HOUR FORECAST CONDITIONS DIMINISHED. 

.OVER FORECAST WATERS WITHIN 120 NM SE OF A FRONT FROM 48N125W 
TO 47N129W AREA OF SW WINDS TO 25 KT. SEAS TO 9 FT. 
.24 HOUR FORECAST CONDITIONS DIMINISHED. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST 
WATERS WITHIN 120 NM E OF A LINE FROM 51N179E TO 46N177E. 
.24 HOUR FORECAST CONDITIONS IMPROVING. 

.HIGH 37N135W 1027 MB MOVING SE 10 KT. 
.24 HOUR FORECAST HIGH 36N130W 1025 MB. 
.48 HOUR FORECAST HIGH 32N129W 1025 MB. 

.HIGH 43N166W 1038 MB MOVING NE 20 KT. 
.24 HOUR FORECAST HIGH 46N156W 1036 MB. 
.48 HOUR FORECAST HIGH 49N146W 1035 MB. 

.24 HOUR FORECAST HIGH 39N166E 1030 MB.
.48 HOUR FORECAST HIGH 46N171W 1032 MB. 

.FORECASTER BELL. 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 MON DEC 18.
24 HOUR FORECAST VALID 0600 UTC TUE DEC 19.
48 HOUR FORECAST VALID 0600 UTC WED DEC 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN AREA BOUNDED BY 30N136W TO 23N133W TO 21N120W TO 25N112W 
TO 30N116W TO 30N136W WINDS 20 KT OR LESS. SEAS 8 TO 13 FT NW TO 
N SWELL.
.24 HOUR FORECAST FROM 18N TO 30N W OF 130W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN NW TO N SWELL. 
.48 HOUR FORECAST FROM 09N TO 20N W OF 105W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN MIXED NW SWELL AND NE WIND WAVES.

.FROM 06N TO 15N W OF 125W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN MIXED NW SWELL AND NE WIND WAVES. FROM 08N TO 14N BETWEEN 
105W AND 111W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED NW 
SWELL AND E WIND WAVES.
.24 HOUR FORECAST FROM 14N TO 20N BETWEEN 112W AND 127W WINDS 20 
KT OR LESS. SEAS TO 9 FT IN MIXED NW SWELL AND NE WIND WAVES.
.48 HOUR FORECAST CONDITIONS TO MERGE WITH AREA ABOVE.

.GULF OF CALIFORNIA LOW PRES NEAR 30.5N113.5W 1013 MB. N OF 
29.5N W OF 113.5W NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST LOW NE OF AREA. WINDS 20 KT OR LESS. SEAS LESS 
THAN 8 FT.

.FROM 09.5N TO 12N E OF 90W...INCLUDING 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 90W...INCLUDING GULF OF 
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. FROM 08N TO 
10N BETWEEN 93W AND 97W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED 
NW AND NE SWELL.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING GULF OF 
TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 15N BETWEEN 94W AND 95.5W...INCLUDING 
GULF OF TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS TO 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95W...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 0800 UTC MON DEC 18...

.SCATTERED MODERATE TO STRONG FROM 15N TO 23N BETWEEN 104W AND 
112W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ EXTENDS FROM 05.5N93W TO 11N116W TO BEYOND 10N140W. 
SCATTERED MODERATE TO STRONG FROM 12N TO 14N BETWEEN 114W AND 
120W. SCATTERED MODERATE FROM 06.5N TO 10.5N BETWEEN 121W AND 
139W. 

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.