####018005850####
FZNT01 KWBC 200341

HSFAT1



HIGH SEAS FORECAST FOR METAREA IV 

NWS OCEAN PREDICTION CENTER WASHINGTON DC 

0430 UTC SAT APR 20 2024 



CCODE/1:31:04:01:00/AOE/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 



FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH 

ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP 

(ALL LOWERCASE). 



SECURITE 



NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W 



ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS 



SYNOPSIS VALID 0000 UTC APR 20. 

24 HOUR FORECAST VALID 0000 UTC APR 21. 

48 HOUR FORECAST VALID 0000 UTC APR 22. 



.WARNINGS... 



...STORM WARNING... 

.24 HOUR FORECAST LOW 61N66W 977 MB. N OF 54N W OF 47W WINDS 30 

TO 45 KT. SEAS 9 TO 15 FT. 

.36 HOUR FORECAST LOW 64N63W 983 MB. WITHIN 90 NM W OF THE 

GREENLAND COAST WINDS 35 TO 50 KT. SEAS 11 TO 21 FT. 

.48 HOUR FORECAST LOW N OF AREA. N OF 60N BETWEEN 47W AND 55W 

WINDS 25 TO 35 KT. SEAS 9 TO 14 FT. 



...GALE WARNING... 

.LOW 53N38W 998 MB MOVING S 20 KT. WITHIN 360 NM NW OF A LINE 

FROM 43N52W TO 49N42W TO LOW CENTER TO 56N35W WINDS 25 TO 35 KT. 

SEAS 9 TO 17 FT.

.24 HOUR FORECAST LOW 47N37W 1005 MB. WITHIN 360 NM W AND SW AND 

480 NM N QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT. 

.48 HOUR FORECAST LOW AND CONDITIONS E OF AREA. 



...GALE WARNING... 

.24 HOUR FORECAST LOW 43N64W 1006 MB. N OF 36N BETWEEN 59W AND 

65W WINDS TO 25 KT. SEAS TO 8 FT. 

.36 HOUR FORECAST LOW 46N59W 1004 MB. WITHIN 360 NM E AND SE 

QUADRANTS WINDS 25 TO 35 KT. SEAS TO 10 FT.   

.48 HOUR FORECAST LOW 55N55W 1001 MB. WITHIN 300 NM E AND SE 

QUADRANTS WINDS 25 TO 35 KT. SEAS TO 11 FT. ELSEWHERE WITHIN 360 

NM NE QUADRANT AND 180 NM E OF A LINE FROM LOW CENTER TO 48N51W 

TO 40N55W WINDS 20 TO 30 KT. SEAS TO 8 FT. 



.SYNOPSIS AND FORECAST. 



.LOW 60N42W 998 MB MOVING E 10 KT. WITHIN 240 MN S AND SW 

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

.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.  



.LOW 35N69W 1014 MB DRIFTING NE. WITHIN 300 NM NE SEMICIRCLE 

WINDS TO 25 KT. SEAS TO 11 FT.

.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS ABSORBED BY LOW 

43N64W.



.N OF 63N E OF GREENLAND WINDS 20 TO 30 KT. SEAS TO 9 FT. 

.24 HOUR FORECAST N OF 62N E OF GREENLAND WINDS 20 TO 30 KT. 

SEAS TO 9 FT. 

.48 HOUR FORECAST CONDITIONS DIMINISHED. 



.48 HOUR FORECAST LOW 53N38W 1004 MB. FROM 51N TO 58N E OF 42W 

WINDS 20 TO 30 KT. SEAS TO 11 FT. 



.48 HOUR FORECAST LOW 33N72W 1010 MB. NW OF A LINE FROM 32N78W 

TO 34N73W WINDS TO 25 KT. SEAS TO 9 FT.



.LIGHT TO MODERATE FREEZING SPRAY N OF 60N W OF GREENLAND AND 

FROM 48N TO 54N W OF 52W.  

.24 HOUR FORECAST CONDITIONS DIMINISHED. 



.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM E OF A LINE FROM 

49N47W TO 61N36W.

.24 HOUR FORECAST DENSE FOG N OF 61N W OF 52W AND WITHIN 60 NM 

NW OF A LINE FROM 40N66W TO 50N59W. 

.48 HOUR FORECAST DENSE FOG N OF 42N BETWEEN 50W AND 59W. 



.FORECASTER ACHORN. OCEAN PREDICTION CENTER.



NATIONAL HURRICANE CENTER MIAMI FL



ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND

GULF OF MEXICO



SYNOPSIS VALID 0000 UTC SAT APR 20.

24 HOUR FORECAST VALID 0000 UTC SUN APR 21.

48 HOUR FORECAST VALID 0000 UTC MON APR 22.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.ATLC 36 HOUR FORECAST LOW PRES NEAR 30.5N39W 1010 MB. WITHIN 

29N35W TO 31N35W TO 31N42W TO 29N45W TO 27N44W TO 26N39W TO 

29N35W WINDS 20 TO 25 KT. SEAS TO 8 FT.

.48 HOUR FORECAST LOW PRES NEAR 31N35W 1007 MB. WITHIN 31N35W 

TO 31N41W TO 27N43W TO 26N42W TO 26N37W TO 28N35W TO 31N35W

WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.



.ATLC AND CARIBBEAN WITHIN 20N73W TO 20N74W TO 20N76W TO 19N76W

TO 19N74W TO 20N73W...INCLUDING THE WINDWARD PASSAGE...NE WINDS 

20 TO 25 KT. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 

LESS THAN 8 FT.



.CARIBBEAN 06 HOUR FORECAST WITHIN 18N70W TO 18N71W TO 17N71W TO

17N70W TO 18N70W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 

LESS THAN 8 FT.

.24 HOUR FORECAST LITTLE CHANGE.

.27 HOUR FORECAST WITHIN 18N70W TO 18N71W TO 18N72W TO 17N72W TO

17N70W TO 18N70W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 

LESS THAN 8 FT.



.GULF OF MEXICO WITHIN 22N88W TO 22N91W TO 21N92W TO 20N92W TO

19N91W TO 21N90W TO 22N88W...INCLUDING WITHIN 60 NM OF COAST OF

CAMPECHE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.09 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 

LESS THAN 8 FT.

.24 HOUR FORECAST WITHIN 22N88W TO 23N88W TO 22N91W TO 21N91W TO

20N91W TO 21N89W TO 22N88W...INCLUDING WITHIN 60 NM OF COAST OF 

CAMPECHE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.33 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 

LESS THAN 8 FT.



.GULF OF MEXICO 39 HOUR FORECAST COLD FRONT FROM 30N88.5W TO

26N97W. WITHIN 29N92W TO 30N93W TO 30N94W TO 27N97W TO 26N97W 

TO 28N93W TO 29N92W N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 

FT.

.48 HOUR FORECAST COLD FRONT FROM 30N85.5W TO 26N94W TO 22N98W. 

WITHIN 28N90W TO 30N89W TO 30N95W TO 28N97W TO 22N98W TO 25N95W 

TO 28N90W N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT.



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



$$

.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.