####018007069####
FZPN02 KWBC 212325

HSFEPI



HIGH SEAS FORECAST FOR METAREA XII

NWS OCEAN PREDICTION CENTER WASHINGTON DC

2345 UTC SUN APR 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 21. 

24 HOUR FORECAST VALID 1800 UTC APR 22. 

48 HOUR FORECAST VALID 1800 UTC APR 23. 



.WARNINGS. 



...STORM WARNING... 

.LOW 55N174E 995 MB MOVING SE 15 KT. WITHIN 240 NM W AND SW 

QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 18 FT. 

.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 52N176E 972 MB. 

WITHIN 360 NM NW AND 300 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 

17 TO 27 FT. ELSEWHERE N OF 47N BETWEEN 164E AND 178E...AND N OF 

50N BETWEEN 161W AND 171W...AND N OF A LINE FROM 50N171W TO 

56N178E WINDS 25 TO 40 KT. SEAS 9 TO 19 FT. 

.48 HOUR FORECAST LOW 54N179W 970 MB. WITHIN 360 NM S AND 360 NM 

W QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 24 FT. ELSEWHERE N OF 

45N BETWEEN 172W AND 168E WINDS 25 TO 40 KT. SEAS 10 TO 20 FT. 



...GALE WARNING... 

.LOW 41N168E 993 MB MOVING NE 30 KT. WITHIN 540 NM S AND 480 NM 

SE QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 19 FT. 

.24 HOUR FORECAST LOW DISSIPATED. FROM 33N TO 47N BETWEEN 162W 

AND 179W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. 

.48 HOUR FORECAST CONDITIONS DIMINISHED. 



...GALE WARNING... 

.LOW 46N176E 989 MB MOVING N 35 KT. FRONT FROM 42N176W TO 

32N172E. WITHIN 480 NM E QUADRANT...AND 240 NM E OF FRONT WINDS 

25 TO 35 KT. SEAS 8 TO 12 FT. 

.24 HOUR FORECAST LOW AND CONDITIONS ABSORBED INTO COMPLEX LOW 

52N176E DESCRIBED ABOVE.  



...GALE WARNING... 

.LOW 46N153W 1007 MB MOVING NE 25 KT. FRONT FROM LOW TO 40N153W 

TO 38N154W. WITHIN 180 NM E AND SE OF FRONT WINDS 25 TO 35 KT. 

SEAS 8 TO 12 FT. 

.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 53N146W 1001 MB. 

WITHIN 240 NM SW...AND 300 NM NE AND 420 NM SE QUADRANTS WINDS 

25 TO 35 KT. SEAS 8 TO 14 FT. 

.48 HOUR FORECAST LOW 53N136W 1005 MB. WITHIN 240 NM S AND SE 

QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. 



...GALE WARNING... 

.FROM 33N TO 42N BETWEEN 128W AND 120W AREA OF N TO NW WINDS 20 

TO 30 KT. SEAS 8 TO 12 FT. 

.06 HOUR FORECAST FROM 38N TO 43N E OF 128W AREA OF N WINDS 25 

TO 35 KT. SEAS 8 TO 13 FT. 

.24 HOUR FORECAST FROM 37N TO 44N BETWEEN 128W AND 124W AREA OF 

N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. 

.48 HOUR FORECAST FROM 37N TO 43N BETWEEN 128W AND 124W AREA OF 

N TO NW WINDS TO 25 KT. SEAS 8 TO 12 FT. 



.SYNOPSIS AND FORECAST. 



.LOW 56N134W 1014 MB MOVING N 10 KT. WITHIN 240 NM S AND SW 

QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. 

.06 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS 

DIMINISHED. 



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 58N 

BETWEEN 170W AND 172E...AND FROM 48N TO 54N BETWEEN 146W AND 

154W.

.24 HOUR FORECAST DENSE FOG FROM 42N TO 55N BETWEEN 160W AND 

176W...AND N OF A LINE FROM 55N172W TO 55N180W TO 53N174E TO 

50N172E TO 51N167E.  

.48 HOUR FORECAST DENSE FOG FROM 38N TO 54N BETWEEN 146W AND 

166W...AND N OF A LINE FROM 47N170E TO 50N174W...AND N OF 55N 

BETWEEN 161W AND 167W. 



.FORECASTER ROWLAND. 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 1800 UTC SUN APR 21.

24 HOUR FORECAST VALID 1800 UTC MON APR 22.

48 HOUR FORECAST VALID 1800 UTC TUE APR 23.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.WITHIN 11N131W TO 14N136W TO 14N140W TO 07N140W TO 06N132W TO

08N130W TO 11N131W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN N SWELL

AND NE WIND WAVES.

.24 HOUR FORECAST WITHIN 08N136W TO 10N137W TO 12N140W TO 

05N140W TO 06N136W TO 08N136W WINDS 20 KT OR LESS. SEAS 8 TO 9 

FT IN N SWELL AND NE WIND WAVES.

.48 HOUR FORECAST WITHIN 10N139W TO 11N140W TO 06N140W TO 

07N139W TO 08N138W TO 10N139W WINDS 20 KT OR LESS. SEAS 8 TO 9 

FT IN N SWELL AND NE WIND WAVES.



.15 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO

14N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF

TEHUANTEPEC... N WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 14N95W TO

15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS

20 TO 30 KT. SEAS 8 TO 9 FT.

.48 HOUR FORECAST WITHIN 13N95W TO 14N95W TO 15N95W TO 12N99W TO

11N98W TO 11N97W TO 13N95W...INCLUDING THE GULF OF

TEHUANTEPEC... WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL.



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



CONVECTION VALID AT 2000 UTC SUN APR 21...



.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

SURFACE TROUGH FROM 08N78W TO 07N96W. ITCZ FROM 07N96W TO 

05N113W TO 04.5N140W. SCATTERED MODERATE FROM 00N TO 08N E OF 

86W...FROM 02N TO 07N BETWEEN 86W AND 96W...AND FROM 03N TO 07N 

BETWEEN 122W AND 140W.



$$

.FORECASTER AL. NATIONAL HURRICANE CENTER.



NATIONAL WEATHER SERVICE HONOLULU HI



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



SYNOPSIS VALID 1800 UTC APR 21 2024.

24 HOUR FORECAST VALID 1800 UTC APR 22 2024.

48 HOUR FORECAST VALID 1800 UTC APR 23 2024.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.FRONT FROM 30N171E TO 26N166E TO 23N161E MOVING E 15 KT.

.24 HOUR FORECAST FRONT FROM 30N178E TO 25N174E.

.48 HOUR FORECAST FRONT WEAKENED TO A TROUGH FROM 30N180E TO

25N174E.



.TROUGH FROM 30N140W TO 25N146W TO 18N152W NEARLY STATIONARY.

.24 HOUR FORECAST TROUGH FROM 26N140W TO 23N144W.

.48 HOUR FORECAST TROUGH MOVED E OF AREA.



.NE TO E WINDS 20 TO 25 KT FROM 05N TO 20N BETWEEN 175E AND

150W...AND FROM 05N TO 10N BETWEEN 160E AND 175E.

.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 15N BETWEEN

170E AND 150W...AND FROM 05N TO 12N BETWEEN 150W AND 140W.

.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 05N TO 15N W OF

160W...AND FROM 05N TO 25N BETWEEN 160W AND 145W.



.SEAS 8 TO 12 FT N OF 28N W OF 165E. SEAS 8 TO 10 FT FROM

05N TO 10N BETWEEN 170E AND 160W.

.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 25N BETWEEN 175E AND

165E...AND FROM 05N TO 15N BETWEEN 180W AND 160W.

.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 05N TO 15N BETWEEN

175E AND 150W.



.WINDS 20 KT OR LESS AND SEAS 8 FT OR LOWER OVER REMAINDER OF

AREA.



.ITCZ 00N172W 04N155W 06N140W. SCATTERED MODERATE TO LOCALLY

STRONG TSTMS WITHIN 300 NM OF ITCZ...AND WITHIN 300 NM OF

POINT 02N171E. SCATTERED MODERATE TSTMS WITHIN 180 NM OF

POINT 07N166W.





$$



.FORECASTER PECHACEK. HONOLULU HI.