High seas forecast issued; storm warnings and gale warnings included.

FZNT01 KWBC 152227
HSFAT1 2230

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SUN DEC 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC DEC 15.
24 HOUR FORECAST VALID 1800 UTC DEC 16.
48 HOUR FORECAST VALID 1800 UTC DEC 17.

.WARNINGS.

…STORM WARNING…
.COMPLEX LOW WITH FIRST LOW 41N41W 1015 MB MOVING SE 10 KT AND
SECOND LOW 34N54W 1017 KT MOVING SE 15 KT. WITHIN 60 NM NW
SEMICIRCLE OF FIRST LOW AND WITHIN 180 NM N SEMICIRCLE OF SECOND
LOW WINDS 30 TO 40 KT. SEAS 12 TO 17 FT. ELSEWHERE WITHIN 300 NM
NW OF FRONT FROM 31N57W TO SECOND LOW TO 36N44W TO FIRST LOW TO
46N35W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N37W 1004 MB.
WITHIN 180 NM W SEMICIRCLE WINDS 35 TO 45 KT. SEAS 12 TO 17 FT.
ELSEWHERE SE OF LINE FROM 31N61W TO 49N35W WINDS 25 TO 35 KT.
SEAS 8 TO 14 FT.
.30 HOUR FORECAST LOW 41N37W 999 MB. WITHIN 90 NM W SEMICIRCLE
WINDS 45 TO 55 KT. SEAS 18 TO 22 FT.
.48 HOUR FORECAST LOW E OF AREA 42N30W 996 MB. WITHIN 420 NM W
SEMICIRCLE WINDS 35 TO 45 KT. SEAS 15 TO 21 FT. ELSEWHERE FROM
32N TO 45N E OF 46W WINDS 25 TO 35 KT. SEAS 10 TO 15 FT.

…GALE WARNING…
.COMPLEX LOW NE OF AREA WITH MAIN CENTER 65N36W 986 MB NEARLY
STATIONARY. FROM 58N TO 61N E OF 44W WINDS 30 TO 40 KT. SEAS 15
TO 20 FT. ELSEWHERE FROM 50N TO 63N E OF 57W WINDS 20 TO 30 KT.
SEAS 10 TO 16 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 64N34W 993 MB.
WITHIN 90 NM NW QUADRANT WINDS 35 TO 45 KT. SEAS 15 TO 20 FT.
ELSEWHERE WITHIN 180 NM NW SEMICIRCLE WINDS 25 TO 35 KT. SEAS 10
TO 14 FT.
.30 HOUR FORECAST LOW 39N36W 999 MB. WITHIN 60 NM W SEMICIRCLE
WINDS 45 TO 55 KT. SEAS 15 TO 20 FT.
.48 HOUR FORECAST LOW E OF AREA 64N32W 995 MB. WITHIN 180 NM W
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 10 TO 14 FT.

…GALE WARNING…
.COMPLEX LOW E OF AREA WITH MAIN LOW CENTERED 35N29W 998 MB
MOVING N 30 KT. SE OF LINE FROM 31N41W TO 36N38W TO 38N35W WINDS
25 TO 35 KT. SEAS 10 TO 18 FT.
.24 HOUR FORECAST LOW AND CONDITIONS MOVED WELL E OF AREA.

…GALE WARNING…
.24 HOUR FORECAST NEW LOW 63N52N 993 MB. FROM 59N TO 65N W OF
GREENLAND WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST LOW MOVED N OF AREA AND CONDITIONS DIMINISHED.

…HEAVY FREEZING SPRAY WARNING…
.LIGHT TO MODERATE FREEZING SPRAY FROM 50N TO 57N W OF 53W…AND
N OF 62N W OF GREENLAND.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF
57W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW OF A LINE
FROM 59N63W TO 62N50W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW OF A LINE
FROM 61N65W TO 66N53W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY NW OF A LINE FROM 59N62W TO 62N50W…AND WITHIN 60 NM OF E
COAST OF GREENLAND.

.SYNOPSIS AND FORECAST.

.S OF 33N W OF 63W WINDS TO 25 KT. SEAS 12 TO 15 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 61N TO 67N
WITHIN 60 NM OF W COAST OF GREENLAND.
.24 HOUR FORECAST DENSE FOG N OF 64N E OF GREENLAND…FROM 60N
TO 63N BETWEEN 57W AND 64