High seas forecast for North Atlantic; storm and gale warnings issued.

FZNT01 KWBC 200419
HSFAT1 0430

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI DEC 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20.
24 HOUR FORECAST VALIOUR FORECAST LOW 61N56W 986 MB. WITHIN 120 NM S QUADRANT
WINDS 40 TO 50 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW 61N48W 980 MB. WITHIN 180 NM SW SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 14 TO 26 FT. ELSEWHERE WITHIN 480 NM N
OF A LINE FROM 54N45W TO 56N57W TO 57N66W WINDS 25 TO 40 KT.
SEAS 9 TO 21 FT.
.48 HOUR FORECAST LOW DISSIPATED. N OF 63N E OF GREENLAND WINDS
35 TO 50 KT. SEAS 13 TO 19 FT. ELSEWHERE N OF A LINE FROM 57N35W
TO 60N43W WINDS 25 TO 35 KT. SEAS 10 TO 17 FT.

…STORM WARNING…
.LOW 33N76W 1017 MB MOVING NE 20 KT. WITHIN 120 NM W AND NW
QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 39N67W 1000 MB. FROM 33N TO 43N BETWEEN
58W AND 71W WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST LOW 43N63W 988 MB. FROM 35N TO 41N BETWEEN 57W
AND 64W WINDS 40 TO 50 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW 49N59W 973 MB. WITHIN 180 NM SW AND 360 NM
NE QUADRANTS WINDS 35 TO 50 KT. SEAS 12 TO 23 FT. ELSEWHERE FROM
36N TO 55N BETWEEN 37W AND 64W WINDS 25 TO 40 KT. SEAS 9 TO 18
FT.

…GALE WARNING…
.LOW 62N40W 994 MB MOVING NE 15 KT. WITHIN 180 NM S AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 17 FT.
.24 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.

…GALE WARNING…
.LOW 32N42W 1015 MB NEARLY STATIONARY NEXT 24 HOURS THEN
DRIFTING N. WITHIN 240 NM W QUADRANT AND 360 NM N SEMICIRCLE
WINDS 25 TO 40 KT. SEAS 12 TO 21 FT.
.24 HOUR FORECAST LOW 32N42W 1010 MB. WITHIN 180 NM N SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW 34N44W 1016 MB. WITHIN 360 NM E AND NE
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

…HEAVY FREEZING SPRAY WARNING…
.MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A LINE FROM 56N58W
TO 60N59W TO 63N60W AND N OF 65N W OF GREENLAND. ELSEWHERE LIGHT
TO MODERATE FREEZING SPRAY IN THE GULF OF SAINT LAWRENCE W OF
60W…NW AND N OF A LINE FROM 52N55W TO 55N52W TO 59N54W TO
60N44W…AND N OF 64N E OF GREENLAND.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A
LINE FROM 55N54W TO 60N60W TO 62N54W TO 66N54W. ELSEWHERE LIGHT
TO MODERATE FREEZING SPRAY N OF 47N W OF 57W…NW AND N OF A
LINE FROM 48N53W TO 59N43W…AND NW OF A LINE FROM 62N41W TO
64N37W TO 65N35W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW AND N OF
LINE FROM 59N63W TO 65N52W AND N OF 63N W OF 36W. ELSEWHERE
LIGHT TO MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 46N61W
TO 51N57W AND NW AND N OF A LINE FROM 52N56W TO 58N42W…AND W
AND NW OF A LINE FROM 60N42W TO 62N35W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 60N
BETWEEN 41W AND 61W…AND N OF 63N E OF GREENLAND.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 44N BETWEEN 62W AND 71W.
.48 HOUR FORECAST DENSE FOG N OF 46N W OF 59W…AND FROM 50N TO
56N W OF 36W.

.FORECASTER ROWLAND. 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 FRI DEC 20.
24 HOUR FORECAST VALID 0000 UTC SAT DEC 21.
48 HOUR FORECAST VALID 0000 UTC SUN DEC 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC LOW