East and Central North Pacific High Seas Forecast

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FZPN02 KWBC 270525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC FRI APR 27 2018

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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. 

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION 
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE). 

SECURITE 

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

SYNOPSIS VALID 0000 UTC APR 27. 
24 HOUR FORECAST VALID 0000 UTC APR 28. 
48 HOUR FORECAST VALID 0000 UTC APR 29. 

.WARNINGS. 

...STORM WARNING...
.LOW 36N158W 1022 MB NEARLY STATIONARY. WITHIN 540 NM W OF A 
FRONT FROM THE LOW TO 30N166W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.12 HOUR FORECAST LOW 36N158W 1012 MB. OVER FORECAST WATERS 
WITHIN 780 NM SW AND 360 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 
8 TO 12 FT.
.24 HOUR FORECAST LOW 36N158W 1006 MB. WITHIN 180 NM NW QUADRANT 
WINDS 40 TO 50 KT. SEAS 16 TO 21 FT. ELSEWHERE WITHIN 420 NM 
NE...540 NM SE...660 NM SW...AND 360 NM NW QUADRANTS WINDS 25 TO 
40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 30N158W 1003 MB. WITHIN 120 NM N 
SEMICIRCLE OF 35N155W WINDS 40 TO 50 KT. SEAS 17 TO 27 FT. 
ELSEWHERE WITHIN 360 NM N SEMICIRCLE OF 35N155W WINDS 25 TO 40 
KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 51N156E MOVING NE 40 KT. OVER FORECAST 
WATERS WITHIN 780 NM E AND 960 NM SE QUADRANTS WINDS 30 TO 45 
KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 58N180W 988 MB. WITHIN 180 NM NE...840 NM 
SE...AND 480 NM SW QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW INLAND 62N162W 1002 MB. BETWEEN 480 NM AND 
780 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 10 TO 16 FT.

...GALE WARNING...
.LOW 62N173W 997 MB MOVING NE 10 KT. OVER ICE FREE FORECAST 
WATERS WITHIN 420 NM SE AND 600 NM SW QUADRANTS WINDS 25 TO 35 
KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW INLAND. WITHIN 300 NM SE OF A LINE FROM 
60N148W TO 56N160W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

...GALE WARNING...
.24 HOUR FORECAST LOW 40N160E 1005 MB. WITHIN 660 NM E AND 420 
NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 13 FT.
.48 HOUR FORECAST LOW 54N178E 989 MB. FRONT TO EXTEND FROM THE 
LOW TO 45N74E TO 34N164E. WITHIN 180 NM NE AND 420 NM SE 
QUADRANTS AND ELSEWHERE WITHIN 360 NM E AND NE OF THE FRONT 
WINDS 30 TO 45 KT. SEAS 9 TO 19 FT.

...GALE WARNING...
.24 HOUR FORECAST OVER FORECAST WATERS FROM 51N TO 56N BETWEEN 
130W AND 136W AREA OF N TO NW WINDS 25 TO 35 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 46N TO 55N BETWEEN 128W AND 134W AREA OF 
N TO NW WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.48 HOUR FORECAST OVER FORECAST WATERS N OF A LINE FROM 45N160E 
TO 49N168E AREA OF SW WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. 

.SYNOPSIS AND FORECAST. 

.LOW 42N134W 1013 MB MOVING E 05 KT. WITHIN 300 NM NW SEMICIRCLE 
WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 43N130W 1014 MB. WITHIN 360 NM SW AND 480 
NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS 
DIMINISHED.

.24 HOUR FORECAST OVER FORECAST WATERS E OF A LINE FROM 35N122W 
TO 32N121W TO 30N119W AREA OF NW WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 30N TO 36N E OF 123W AREA OF NW WINDS 20 
TO 30 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST 
WATERS W OF A LINE FROM 54N168E TO 40N180W TO 43N171E TO 32N163E.
.24 HOUR FORECAST DENSE FOG FROM 33N TO 45N W OF 168E AND WITHIN 
240 NM SE AND S OF A LINE FROM 51N173W TO 45N179W TO 43N168E.
.48 HOUR FORECAST DENSE FOG WITHIN AN AREA BOUNDED BY A LINE 
FROM 53N179W TO 48N165W TO 39N170E TO 53N179W AND FROM 31N TO 
35N BETWEEN 167E AND 162E. 

.HIGH 36N147W 1026 MB MOVING NE 10 KT. 
.24 HOUR FORECAST HIGH 40N145W 1027 MB. 
.48 HOUR FORECAST HIGH DISSIPATED. 

.HIGH 39N176W 1037 MB MOVING SE 05 KT. 
.24 HOUR FORECAST HIGH 38N174W 1036 MB. 
.48 HOUR FORECAST HIGH 37N175W 1033 MB. 

.24 HOUR FORECAST NEW HIGH 47N156W 1034 MB. 
.48 HOUR FORECAST HIGH 48N146W 1033 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 0000 UTC FRI APR 27.
24 HOUR FORECAST VALID 0000 UTC SAT APR 28.
48 HOUR FORECAST VALID 0000 UTC SUN APR 29.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 21N TO 25N BETWEEN 112W AND 115W WINDS 20 KT OR LESS. SEAS
TO 8 FT IN NW SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 08N TO 15N W OF 125W WINDS 20 KT OR LESS. SEAS 8 FT IN
MIXED NW SWELL AND NE WIND WAVES.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 08N TO 22N W OF 130W WINDS 20 KT OR LESS.
SEAS TO 9 FT IN MIXED NW SWELL AND NE WIND WAVES. 

.24 HOUR FORECAST N OF 26N E OF 117W NW WINDS 20 TO 25 KT. SEAS
TO 8 FT.
.48 HOUR FORECAST N OF 24N E OF 122W NW 20 TO 25 KT. SEAS 8 TO 10
FT. 

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

CONVECTION VALID AT 0330 UTC FRI APR 27...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 08N84W TO 08N100W. ITCZ FROM 08N100W TO 
BEYOND 06N140W. SCATTERED MODERATE FROM 03N TO 08N BETWEEN 85W 
AND 95W AND FROM 05N TO 12N BETWEEN 115W AND 130W.

.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI