####018004872####
FZPN01 KWBC 171557

HSFEP1



HIGH SEAS FORECAST 

NWS OCEAN PREDICTION CENTER WASHINGTON DC 

1630 UTC WED APR 17 2024 



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 APR 17. 

24 HOUR FORECAST VALID 1200 UTC APR 18. 

48 HOUR FORECAST VALID 1200 UTC APR 19. 



.WARNINGS. 



...STORM WARNING... 

.LOW 53N157W 994 MB MOVING SW 05 KT. WITHIN 480 NM NE...600 NM 

E...AND 600 NM W QUADRANTS WINDS 30 TO 45 KT. SEAS 9 TO 21 

FT...HIGHEST NE OF CENTER. ELSEWHERE FROM 30N TO 50N BETWEEN 

136W AND 150W...FROM 40N TO 50N BETWEEN 150W AND 175W...AND FROM 

50N TO 60N BETWEEN 137W AND 176W WINDS 25 TO 35 KT. SEAS 8 TO 15 

FT.

.06 HOUR FORECAST LOW 55N158W 991 MB. WITHIN 420 NM NE QUADRANT 

WINDS 35 TO 50 KT. SEAS 12 TO 23 FT.

.24 HOUR FORECAST LOW 50N157W 996 MB. N OF 58N BETWEEN MAINLAND 

ALASKA AND 150W WINDS 35 TO 50 KT. SEAS 12 TO 20 FT. ELSEWHERE 

WITHIN 720 NM NE...840 NM E...1080 NM SE...720 NM S...600 NM 

W...AND 780 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 9 TO 20 

FT...HIGHEST NEAR 57N148W.

.48 HOUR FORECAST LOW 50N155W 996 MB. WITHIN 600 NM N...660 NM 

NE...780 NM E...660 NM S...AND 600 NM W QUADRANTS WINDS 25 TO 40 

KT. SEAS 9 TO 19 FT...HIGHEST S OF CENTER.



...GALE WARNING... 

.LOW W OF AREA NEAR 39N159E 998 MB MOVING N 10 KT. FROM 30N TO 

48N W OF 175E WINDS 25 TO 35 KT. SEAS 8 TO 13 FT. 

.24 HOUR FORECAST LOW W OF AREA NEAR 44N158E 1002 MB. FROM 30N 

TO 50N W OF 176E WINDS 20 TO 30 KT. SEAS TO 11 FT. 

.48 HOUR FORECAST LOW DISSIPATED. FROM 35N TO 50N BETWEEN 175W 

AND 174E WINDS TO 25 KT. SEAS TO 9 FT. 



...HEAVY FREEZING SPRAY WARNING... 

.MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE FROM 58N170W TO 

60N178W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF A LINE 

FROM 58N166W TO 54N170W TO 58N177E.

.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 58N 

BETWEEN 166W AND 173W. ELSEWHERE LIGHT TO MODERATE FREEZING 

SPRAY N OF A LINE FROM 57N164W TO 55N168W TO 55N174W TO 58N178E.

.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE 

FROM 58N165W TO 56N166W TO 55N170W TO 60N178W. 



.SYNOPSIS AND FORECAST.



.FROM 33N TO 44N BETWEEN 122W AND 129W AREA OF N WINDS 20 TO 30 

KT. SEAS TO 11 FT. 

.24 HOUR FORECAST FROM 36N TO 46N BETWEEN 123W AND 129W AREA OF 

N WINDS TO 25 KT. SEAS TO 10 FT. 

.48 HOUR FORECAST CONDITIONS DIMINISHED.



.48 HOUR FORECAST LOW W OF AREA NEAR 41N151E 969 MB. FROM 30N TO 

44N W OF 164E WINDS 20 TO 30 KT. SEAS TO 8 FT.



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 48N TO 58N 

BETWEEN 148W AND 167W...N OF THE ALEUTIANS AND E OF 169W...AND 

FROM 41N TO 46N W OF 170E. 

.24 HOUR FORECAST DENSE FOG FROM 47N TO THE ALEUTIANS BETWEEN 

154W AND 166W...N OF THE ALEUTIANS AND E OF 169W...N OF 55N W OF 

180W...FROM 38N TO 47N BETWEEN 174E AND 170E...AND FROM 42N TO 

50N W OF 170E.

.48 HOUR FORECAST DENSE FOG FROM 46N TO 49N BETWEEN 152W AND 

160W...N OF 50N BETWEEN 160W AND 167W...AND FROM 42N TO 52N W OF 

180W.



.FORECASTER EHRBAR. 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 WED APR 17.

24 HOUR FORECAST VALID 1200 UTC THU APR 18.

48 HOUR FORECAST VALID 1200 UTC FRI APR 19.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.WITHIN 14N113W TO 15N120W TO 20N136W TO 08N140W TO 05N124W TO

07N115W TO 14N113W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

.24 HOUR FORECAST WITHIN 11N122W TO 16N136W TO 14N140W TO 

07N140W TO 09N129W TO 07N122W TO 11N122W WINDS 20 KT OR LESS. 

SEAS 8 TO 10 FT IN S SWELL.

.48 HOUR FORECAST WITHIN 11N132W TO 13N137W TO 14N140W TO 

08N140W TO 10N135W TO 11N132W WINDS 20 KT OR LESS. SEAS 8 TO 10 

FT IN E TO SE SWELL.



.WITHIN 25N115W TO 30N120W TO 24N117W TO 22N117W TO 18N114W TO

23N113W TO 25N115W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW

SWELL.

.12 HOUR FORECAST CONDITIONS IMPROVE.



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



CONVECTION VALID AT 1500 UTC WED APR 17...



.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

TROUGH FROM 08N78W TO 06N93W. ITCZ FROM 06N93W TO 05N115W TO 

08N140W. SCATTERED MODERATE FROM 04N TO 08N BETWEEN 133W AND 

137W. 



$$

.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.