####018008198####
FZPN02 KWBC 041725

HSFEPI



HIGH SEAS FORECAST FOR METAREA XII

NWS OCEAN PREDICTION CENTER WASHINGTON DC

1745 UTC SAT MAY 04 2024 



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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 



ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS 



SYNOPSIS VALID 1200 UTC MAY 04. 

24 HOUR FORECAST VALID 1200 UTC MAY 05. 

48 HOUR FORECAST VALID 1200 UTC MAY 06. 



.WARNINGS. 



...GALE WARNING... 

.LOW 58N167W 984 MB MOVING E 20 KT. FROM 46N TO 53N BETWEEN 163W 

AND 177W AND W OF A LINE FROM 64N168W TO 57N174W WINDS 25 TO 40 

KT. SEAS 11 TO 20 FT...EXCEPT N OF 57N SEAS 9 TO 14 FT. 

ELSEWHERE WITHIN 300 NM SE...840 NM S AND SE AND 720 NM NW 

QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

.24 HOUR FORECAST LOW 58N151W 989 MB. FROM 47N TO 55N BETWEEN 

144W AND 166W...AND N OF 59N BETWEEN 168W AND 175W WINDS 25 TO 

35 KT. SEAS 10 TO 20 FT...EXCEPT N OF 59N SEAS TO 10 FT. 

ELSEWHERE WITHIN 960 NM SW SEMICIRCLE AND 600 NM SE QUADRANT 

WINDS 20 TO 30 KT. SEAS 8 TO 13 FT...HIGHEST S OF 55N.

.48 HOUR FORECAST LOW 57N143W 996 MB. WITHIN 840 NM SW 

SEMICIRCLE AND N OF 58N W OF 165W WINDS 20 TO 30 KT. SEAS 8 TO 

17 FT...EXCEPT SEAS TO 9 FT IN BERING SEA.



...GALE WARNING...

.LOW 35N167E 1013 MB MOVING NE 20 KT. FROM 34N TO 40N BETWEEN 

180W AND 166E WINDS TO 25 KT. SEAS TO 10 FT. 

.24 HOUR FORECAST LOW 40N176E 1013 MB. FROM 38N TO 44N BETWEEN 

174W AND 176E AND WITHIN 300 NM S QUADRANT WINDS 20 TO 30 KT. 

SEAS TO 10 FT.

.48 HOUR FORECAST LOW 46N171W 1003 MB. WITHIN 180 NM SW 

SEMICIRCLE WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM 

39N TO 49N BETWEEN 160W AND 178W WINDS 20 TO 30 KT. SEAS TO 11 

FT.  



...HEAVY FREEZING SPRAY WARNING...

.LIGHT TO MODERATE FREEZING SPRAY N OF 59N W OF 174W. 

.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE 

FROM 59N173W TO 60N178W. ELSEWHERE LIGHT TO MODERATE FREEZING 

SPRAY N OF A LINE FROM 58N168W TO 59N180W.

.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 59N W OF 

167W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 57N W OF 

163W. 



.SYNOPSIS AND FORECAST. 



.COMPLEX LOW WITH MAIN CENTER 49N124W 1001 MB MOVING SE 15 KT. 

WITHIN 540 NM W AND SW QUADRANTS AND FROM 34N TO 44N BETWEEN 

124W AND 141W WINDS 20 TO 30 KT. SEAS TO 11 FT...HIGHEST NEAR 

41N139W.

.24 HOUR FORECAST COMBINED LOW INLAND NEAR 46N117W 994 MB. FROM 

32N TO 47N E OF 130W AREA OF W TO NW WINDS TO 25 KT. SEAS TO 9 

FT.

.48 HOUR FORECAST LOW WELL INLAND. ASSOCIATED CONDITIONS 

DIMINISHED.



.LOW 58N152W 992 MB MOVING N 10 KT. N OF 50N BETWEEN 143W AND 

158W WINDS TO 25 KT. SEAS TO 10 FT...HIGHEST NEAR 52N153W.

.24 HOUR FORECAST LOW INLAND AND CONDITIONS AS DESCRIBED WITH 

LOW 58N151W IN WARNINGS SECTION.



.LOW 48N160E 1008 MB MOVING NE 10 KT. FROM 44N TO 51N W OF 168E 

WINDS TO 25 KT. SEAS TO 10 FT. 

.24 HOUR FORECAST LOW 49N165E 1012 MB. WITHIN 300 NM OF CENTER 

WINDS TO 25 KT. SEAS TO 8 FT. 

.48 HOUR FORECAST LOW 50N168E 1010 MB. WITHIN 360 NM W AND SW 

SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 10 FT.



.48 HOUR FORECAST FROM 30N TO 36N E OF 123W AREA OF NW WINDS 20 

TO 30 KT. SEAS TO 10 FT.  



.48 HOUR FORECAST FROM 30N TO 34N W OF 167E AREA OF NE WINDS 20 

TO 30 KT. SEAS TO 9 FT. 



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 35N TO 41N E 

OF 124W...N OF 56N BETWEEN 154W AND 177W...AND N OF 48N W OF 

167E.

.24 HOUR FORECAST DENSE FOG N OF 57N BETWEEN 165W AND 170W...AND 

FROM 48N TO 52N W OF 175E. 

.48 HOUR FORECAST DENSE FOG FROM 45N TO 49N BETWEEN 160W AND 

178W...AND FROM 47N TO 53N W OF 178E. 



.FORECASTER BANCROFT. 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 SAT MAY 04.

24 HOUR FORECAST VALID 1200 UTC SUN MAY 05.

48 HOUR FORECAST VALID 1200 UTC MON MAY 06.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.WITHIN 13N136W TO 14N138W TO 13N140W TO 10N140W TO 10N139W TO

11N137W TO 13N136W NE WINDS 20 TO 25 KT. SEAS 9 TO 10 FT.

ELSEWHERE WITHIN 21N140W TO 06N140W TO 08N133W TO 11N130W TO 

21N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE WIND WAVES

MIXED WITH N TO NE SWELL.

.24 HOUR FORECAST WITHIN 12N128W TO 14N136W TO 21N140W TO 

05N140W TO 05N131W TO 08N126W TO 12N128W WINDS 20 KT OR LESS. 

SEAS 8 TO 9 FT IN NE WIND WAVES MIXED WITH N TO NE SWELL.

.48 HOUR FORECAST WITHIN 16N133W TO 19N140W TO 09N140W TO 

11N135W TO 16N133W WINDS 20 KT OR LESS. SEAS 8 FT IN N TO NE 

SWELL.



.WITHIN 01N105W TO 03N115W TO 00N122W TO 03.4S120W TO 03.4S99W

TO 01N105W WINDS 20 KT OR LESS. SEAS 8 FT IN SE TO S SWELL.

.24 HOUR FORECAST WITHIN 02N111W TO 04N122W TO 00N124W TO

03.4S120W TO 03.4S102W TO 02N111W WINDS 20 KT OR LESS. SEAS

8 TO 9 FT IN S TO SW SWELL.

.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS TNAN 8 FT.



.15 HOUR FORECAST WITHIN 31N113W TO 31N115W TO 30N115W TO

30N114W TO 30N113W TO 31N113W...INCLUDING THE GULF OF

CALIFORNIA...S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST WITHIN 31N113W TO 31N115W TO 30N115W TO

30N114W TO 30N113W TO 31N113W...INCLUDING THE GULF OF

CALIFORNIA...S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.



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



CONVECTION VALID AT 1530 UTC SAT MAY 04...



.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM 07N78W TO 14N94W TO 10N102W TO

08N110W. THE ITCZ EXTENDS FROM 08N110W TO 08N122W TO 06N132W

TO 06N140W. SCATTERED MODERATE TO STRONG WITHIN 30 NM S OF THE 

ITCZ BETWEEN 126W AND 130W. SCATTERED MODERATE WITHIN 30 NM OF 

THE ITCZ BETWEEN 115W AND 117W AND WITHIN 60 NM S OF THE ITCZ 

BETWEEN 133W AND 135W.



$$

.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.



NATIONAL WEATHER SERVICE HONOLULU HI



NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E



SYNOPSIS VALID 1200 UTC MAY 04 2024.

24 HOUR FORECAST VALID 1200 UTC MAY 05 2024.

48 HOUR FORECAST VALID 1200 UTC MAY 06 2024.



.WARNINGS.



.NONE.



.FRONT 30N162W 28N160W MOVING 10 KTS.

.24 HOUR FORECAST FRONT 30N166E 26N160E. SEE WINDS BELOW.

.48 HOUR FORECAST FRONT 30N167E 26N160E. SEE WINDS AND SEAS BELOW.



.TROUGH 25N165E 21N161E 17N163E MOVING W 10 KT. ISOLATED MODERATE

TSTMS WITHIN 90 NM OF TROUGH N OF 20N.

.24 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.



.TROUGH 30N169W 26N171W 20N171W MOVING W 10 KT. ISOLATED MODERATE

TSTMS WITHIN 120 NM E OF TROUGH.

.24 HOUR FORECAST DISSIPATED.



.WINDS 20 TO 30 KT N OF 04N AND S OF LINE 04N179W 27N166W 29N160W

25N140W.

.24 HOUR FORECAST WINDS 20 TO 25 KT N OF LINE 27N160E 30N163E.

WINDS 20 TO 25 KT N OF 06N AND S OF LINE 06N180W 29N165W 29N155W

23N140W.

.48 HOUR FORECAST WINDS 20 TO 25 KT N OF LINE 28N160E 30N163E.

WINDS 20 TO 25 KT N OF 05N AND S OF LINE 05N179E 28N170W 29N159W

22N140W.



.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.



.SEAS 8 TO 11 FT N OF 04N AND S OF LINE 04N176W 25N165W 28N157W

20S140W.

.24 HOUR FORECAST SEAS 8 TO 11 FT IN AREA 07N140W 01N150W 07N178E

10N177E 26N170W 28N157W 20N140W.

.48 HOUR FORECAST SEAS 8 TO 10 FT N OF LINE 27N160E 30N163E. SEAS

8 TO 11 FT IN AREA 06N140W 00N155W 10N178E 28N171W 29N162W 

20N140W.



.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.



.ITCZ 06N140W 04N160W 02N180W 01N172E. ISOLATED MODERATE TSTMS

WITHIN 90 NM N OF ITCZ E OF 173W.



.ISOLATED MODERATE TSTMS S OF 06S AND W OF 166E.



$$



.FORECASTER POWELL. HONOLULU HI.