High seas forecast warning for North Atlantic; adverse weather expected.

FZNT01 KWBC 170422
HSFAT1 0430

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC TUE DEC 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
[email protected](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 DEC 17.
24 HOUR FORECAST VALID 0000 UTC DEC 18.
48 HOUR FORECAST VALID 0000 UTC DEC 19.

.WARNINGS.

…STORM WARNING…
.LOW 41N36W 1000 MB MOVING NE 15 KT. WITHIN 360 NM SW…240 NM
W…NW AND BETWEEN 120 NM AND 300 NM N QUADRANTS WINDS 35 TO 50
KT. SEAS 10 TO 20 FT…HIGHEST NEAR THE LOW CENTER. ELSEWHERE
FROM 31N TO 43N E OF 50W AND WITHIN 600 NM NW AND 480 NM N
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.06 HOUR FORECAST LOW JUST E OF THE AREA 41N34W 993 MB. FROM 40N
TO 44N E OF 39W WINDS 40 TO 55 KT. SEAS 16 TO 24 FT…HIGHEST
NEAR 41N35W.
.24 HOUR FORECAST LOW E OF AREA 41N27W 998 MB. FROM 37N TO 46N E
OF 39W WINDS 20 TO 30 KT. SEAS 10 TO 20 FT. ELSEWHERE FROM 31N TO
45N E OF 45W WINDS LESS THAN 25 KT. SEAS 8 TO 15 FT IN N SWELL.
.48 HOUR FORECAST LOW AND CONDITIONS MOVED E OF THE AREA.

…GALE WARNING…
.LOW E OF AREA 64N32W 994 MB MOVING SE 10 KT. N OF 62N E OF 39W
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW AND CONDITIONS MOVED WELL E OF AREA.

…GALE WARNING…
.LOW 66N53W MOVING NW 15 KT. N OF 60N W OF GREENLAND WINDS 25 TO
35 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST LOW WELL NW OF THE AREA WITH NEW LOW 60N57W 996
MB. WITHIN 90 NM NE AND E OF A LINE FROM 64N54W TO 62N52W TO W
GREENLAND AND FROM 50N TO 52N W OF 50W WINDS 25 TO 35 KT. SEAS 8
TO 15 FT…HIGHEST NEAR 51N60W. ELSEWHERE FROM 50N TO 64N BETWEEN
50W AND 58W AND N OF 64N W OF GREENLAND WINDS 20 TO 30 KT. SEAS
TO 10 FT.
.48 HOUR FORECAST LOW 60N47W 990 MB. WITHIN 90 NM N AND NE OF A
LINE FROM 63N53W TO 60N51W TO W GREENLAND WINDS 30 TO 40 KT. SEAS
11 TO 18 FT…HIGHEST NEAR 62N51W. ELSEWHERE FROM 50N TO 60N
BETWEEN 45W AND 57W AND N OF 60N E OF 59W TO W GREENLAND WINDS 25
TO 35 KT. SEAS 8 TO 14 FT IN MIXED SWELL.

…GALE WARNING…
.12 HOUR FORECAST WITHIN 120 NM NW AND N OF A LINE FROM 40N70W TO
43N66W…INCLUDING THE BAY OF FUNDY AREA OF S WINDS 25 TO 35 KT.
SEAS TO 11 FT.
.24 HOUR FORECAST WITHIN 120 NM NW AND N OF A LINE FROM 40N64W TO
47N56W AND FROM 46N TO 50N BETWEEN 57W AND 62W IN THE GULF OF
SAINT LAWRENCE AREA OF S TO SW WINDS 30 TO 40 KT. SEAS 8 TO 14
FT…HIGHEST IN THE E GULF OF SAINT LAWRENCE. ELSEWHERE W AND NW
OF A LINE FROM 37N61W TO 47N50W TO 50N47W AREA OF S TO SW WINDS
20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST NEW LOW 62N40W 991 MB. WITHIN 180 NM E AND SE
OF A LINE FROM 50N43W TO 44N49W AND WITHIN AN AREA BOUNDED BY A
LINE FROM 50N43W TO 50N38W TO 53N35W TO 58N35W TO 50N43W WINDS 30
TO 40 KT. SEAS 10 TO 18 FT…HIGHEST NEAR 52N42W. ELSEWHERE FROM
50N TO 60N E OF 45W AND N OF 60N E OF GREENLAND WINDS 20 TO 30
KT. SEAS 8 TO 14 FT IN MIXED SWELL.

…GALE WARNING…
.48 HOUR FORECAST LOW S OF AREA. FROM 31N TO 34N E OF 43W WINDS
25 TO 40 KT. SEAS 8 TO 16 FT.

…HEAVY FREEZING SPRAY WARNING…
.MODERATE TO HEAVY FREEZING SPRAY NW AND N OF A LINE FROM 62N60W
TO 66N54W. ELSEWHERE LIGHT TO