OPC N Atlantic High Seas Forecast
Thu Apr 16 11:52 pm
FZNT01 KWBC 170350
HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI APR 17 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 17.
24 HOUR FORECAST VALID 0000 UTC APR 18.
48 HOUR FORECAST VALID 0000 UTC APR 19.
.WARNINGS.
...STORM WARNING...
.LOW 61N43W 995 MB MOVING NE 10 KT. N OF 53N E OF 50W WINDS 25 TO
40 KT. SEAS 2.5 TO 4.5 M.
.12 HOUR FORECAST LOW 62N41W 982 MB. WITHIN 180 NM SE SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 5 TO 7 M.
.24 HOUR FORECAST LOW 63N39W 986 MB. N OF 56N E OF 45W WINDS 25
TO 40 KT. SEAS 3 TO 7 M.
.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.
...STORM WARNING...
.LOW 43N65W 1009 MB MOVING NE 35 KT. WITHIN 480 NM SE...AND 720
NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 50N47W 1000 MB. WITHIN 480 NM E...AND 420
NM W SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 4 M.
.30 HOUR FORECAST LOW 52N42W 996 MB. WITHIN 480 NM E...AND 420 NM
W SEMICIRCLES WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 56N34W 976 MB. WITHIN 360 NM W SEMICIRCLE
WINDS 45 TO 60 KT. SEAS 7 TO 12 M. ALSO WITHIN 480 NM W
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 40N E
OF 52W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.LOW 64N52W 990 MB MOVING SE 20 KT. FROM 53N TO 64N BETWEEN 50W
AND 60W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 60N4W 995 MB. FROM 55N TO 64N W OF 45W
WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 57N W OF 57W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 51N W OF 48W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF
55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 56N W OF
45W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 50N W OF
50W.
.SYNOPSIS AND FORECAST.
.48 HOUR FORECAST NEW LOW 41N67W 1016 MB. WITHIN 660 NM NE
QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 46N
BETWEEN 71W AND 56W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 47N BETWEEN 70W AND
44W...AND FROM 47N TO 57N BETWEEN 53W AND 38W.
.48 HOUR FORECAST DENSE FOG FROM N OF 52N E OF 38W.
.FORECASTER BYRD. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0000 UTC FRI APR 17.
HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI APR 17 2026
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 17.
24 HOUR FORECAST VALID 0000 UTC APR 18.
48 HOUR FORECAST VALID 0000 UTC APR 19.
.WARNINGS.
...STORM WARNING...
.LOW 61N43W 995 MB MOVING NE 10 KT. N OF 53N E OF 50W WINDS 25 TO
40 KT. SEAS 2.5 TO 4.5 M.
.12 HOUR FORECAST LOW 62N41W 982 MB. WITHIN 180 NM SE SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 5 TO 7 M.
.24 HOUR FORECAST LOW 63N39W 986 MB. N OF 56N E OF 45W WINDS 25
TO 40 KT. SEAS 3 TO 7 M.
.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS
DIMINISHED.
...STORM WARNING...
.LOW 43N65W 1009 MB MOVING NE 35 KT. WITHIN 480 NM SE...AND 720
NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 50N47W 1000 MB. WITHIN 480 NM E...AND 420
NM W SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 4 M.
.30 HOUR FORECAST LOW 52N42W 996 MB. WITHIN 480 NM E...AND 420 NM
W SEMICIRCLES WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR FORECAST LOW 56N34W 976 MB. WITHIN 360 NM W SEMICIRCLE
WINDS 45 TO 60 KT. SEAS 7 TO 12 M. ALSO WITHIN 480 NM W
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE N OF 40N E
OF 52W WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M.
...GALE WARNING...
.LOW 64N52W 990 MB MOVING SE 20 KT. FROM 53N TO 64N BETWEEN 50W
AND 60W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW 60N4W 995 MB. FROM 55N TO 64N W OF 45W
WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 57N W OF 57W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY N OF 51N W OF 48W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 64N W OF
55W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY N OF 56N W OF
45W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 50N W OF
50W.
.SYNOPSIS AND FORECAST.
.48 HOUR FORECAST NEW LOW 41N67W 1016 MB. WITHIN 660 NM NE
QUADRANT WINDS 20 TO 30 KT. SEAS TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 46N
BETWEEN 71W AND 56W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 47N BETWEEN 70W AND
44W...AND FROM 47N TO 57N BETWEEN 53W AND 38W.
.48 HOUR FORECAST DENSE FOG FROM N OF 52N E OF 38W.
.FORECASTER BYRD. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0000 UTC FRI APR 17.