NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC (12:30pm ET) MON OCT 13 2025

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP (ALL LOWERCASE).

FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).

FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH ATLANTIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 4 METERS OR GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH, AND ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER CONDITIONS WILL BE INCLUDED FOR WARNING CONDITIONS AND TO PRESERVE CONTINUITY WHERE APPROPRIATE.

SECURITE

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1200 UTC OCT 13.
24 HOUR FORECAST VALID 1200 UTC OCT 14.
48 HOUR FORECAST VALID 1200 UTC OCT 15.

LOW: 53N42W 982 MB MOVING S 10 KT. FROM 49N TO 57N BETWEEN 41W AND 48W WINDS 40 TO 55 KT. SEAS 5 TO 8 M. ELSEWHERE FROM 41N TO 61N BETWEEN 35W AND 52W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
24 HOUR FORECAST: LOW 49N43W 988 MB. FROM 44N TO 52N BETWEEN 39W AND 50W WINDS 25 TO 35 KT. SEAS 4 TO 6.5 M. ELSEWHERE FROM 38N TO 54N BETWEEN 37W AND 52W WINDS 20 TO 30 KT. SEAS 2.5 TO 5 M.
48 HOUR FORECAST: LOW 43N40W 992 MB. FROM 37N TO 46N BETWEEN 35W AND 47W WINDS 25 TO 35 KT. SEAS 2.5 TO 5 M.

.N OF 65N W OF GREENLAND AREA OF S WINDS 40 TO 55 KT. SEAS 3 TO 6 M. ELSEWHERE N OF 60N W OF 53W WINDS 25 TO 40 KT. SEAS TO 4 M.
24 HOUR FORECAST: N OF 65N BETWEEN 53W AND 60W AREA OF SW WINDS 20 TO 30 KT. SEAS TO 3.5 M.
36 HOUR FORECAST: CONDITIONS DIMINISHED.

LOW: 38N74W 1004 MB MOVING SE 05 KT. WITHIN 90 NM W SEMICIRCLE AND FROM 38N TO 44N BETWEEN 63W AND 75W WINDS 30 TO 45 KT. SEAS 3 TO 6 M.
24 HOUR FORECAST: LOW 36N73W 1006 MB. WITHIN 150 NM W QUADRANT...AND WITHIN 180 NM N OF A LINE FROM 37N74W TO 40N70W TO 40N67W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
48 HOUR FORECAST: LOW ABSORBED. CONDITIONS DESCRIBED BELOW WITH LOW 35N64W.

LOW: 33N78W 1004 MB MOVING NE 15 KT. WITHIN 120 NM NW SEMICIRCLE WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE FROM 31N TO 35N BETWEEN 75W AND 80W WINDS 20 TO 30 KT. SEAS TO 3 M.
24 HOUR FORECAST: LOW 35N71W 1006 MB. FROM 31N TO 35N BETWEEN 70W AND 78W WINDS 20 TO 30 KT. SEAS TO 3 M.
48 HOUR FORECAST: LOW ABSORBED. CONDITIONS DESCRIBED BELOW WITH LOW 35N64W.

LOW: 38N61W 1010 MB MOVING SE 25 KT. WITHIN AN AREA BOUNDED BY A LINE FROM 44N63W TO 33N50W TO 38N63W TO 44N63W WINDS 30 TO 45 KT. SEAS 3 TO 6 M.
24 HOUR FORECAST: LOW 32N51W 1008 MB. WITHIN 240 NM N OF A FRONT TO EXTEND FROM 32N48W TO 34N58W WINDS 20 TO 30 KT. SEAS TO 3.5 M.
48 HOUR FORECAST: LOW 32N36W 1001 MB. FROM 31N TO 32N BETWEEN 35W AND 40W WINDS 25 TO 35 KT. SEAS TO 4 M.

24 HOUR FORECAST: NEW LOW 36N64W 1005 MB. WITHIN 300 NM N OF A FRONT TO EXTEND FROM 34N58W TO THE LOW TO 40N67W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
48 HOUR FORECAST: COMPLEX LOW WITH MEAN CENTER 35N64W 994 MB. FROM 31N TO 40N BETWEEN 52W AND 78W WINDS 25 TO 40 KT. SEAS 2.5 TO 5 M..
HIGH: EST NEAR 37N67W.

48 HOUR FORECAST: NEW LOW 50N38W 995 MB. FROM 50N TO 56N BETWEEN 35W AND 48W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.

SYNOPSIS AND FORECAST

LOW: 32N60W 1009 MB MOVING SE 15 KT. FROM 31N TO 33N BETWEEN 56W AND 62W WINDS TO 25 KT. SEAS TO 3 M.
24 HOUR FORECAST: LOW AND CONDITIONS S OF AREA.

VISABILITY OCCASIONALLY LESS THAN 1 NM N OF 66N BETWEEN 54W AND 57W.
24 HOUR FORECAST: CONDITIONS IMPROVED.
48 HOUR FORECAST: DENSE FOG FROM 53N TO 60N BETWEEN 37W AND 45W.

.FORECASTER HUFFMAN. OCEAN PREDICTION CENTER.

NWS