FZNT01 KWBC 201548
HSFAT1 1630
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC DEC 20.
24 HOUR FORECAST VALID 1200 UTC DEC 21.
48 HOUR FORECAST VALID 1200 UTC DEC 22.
.WARNINGS.
…HURRICANE FORCE WIND WARNING…
.LOW 35N73W 1008 MB MOVING NE 25 KT. FROM 35N TO 39N W OF 68W
WINDS TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST LOW 38N71W 1001 MB. WITHIN 120 NM N SEMICIRCLE
WINDS 25 TO 35 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 42N63W 989 MB. WITHIN 360 NM SE QUADRANT
WINDS 40 TO 50 KT. SEAS 12 TO 20 FT. ELSEWHERE BETWEEN 75W AND A
LINE FROM 31N57W TO 51N43W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW 53N54W 966 MB. WITHIN 180 NM SE AND NW
QUADRANTS WINDS 50 TO 65 KT. SEAS 16 TO 28 FT. ELSEWHERE WITHIN
300 NM SE SEMICIRCLE…AND WITHIN 240 NM NW AND N OF A FRONT
FROM LOW TO 56N53W TO 58N43W WINDS 40 TO 50 KT. SEAS 12 TO 20
FT. ALSO FROM 42N TO 61N BETWEEN 35W AND 66W WINDS 25 TO 40 KT.
SEAS 10 TO 20 FT. OTHERWISE WITHIN 180 NM E OF A FRONT FROM
42N49W TO 37N55W TO 31N57W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
…STORM WARNING…
.RAPIDLY INTENSIFYING COMPLEX LOW WITH MEAN CENTER NEAR 58N37W
984 MB MOVING NE 45 KT. FROM 50N TO 57N E OF 39W…AND BETWEEN
240 NM AND 360 NM SW QUADRANT WINDS 40 TO 55 KT. SEAS 14 TO 24
FT. ELSEWHERE FROM 43N TO 59N E OF 48W WINDS 25 TO 40 KT. SEAS 9
TO 18 FT. ALSO WITHIN 240 NM SE AND S OF A FRONT FROM 45N48W TO
35N68W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW WELL E OF AREA. FROM 56N TO 61N E OF 44W
WINDS 40 TO 55 KT. SEAS 18 TO 28 FT. ELSEWHERE N OF A LINE FROM
52N35W TO 58N49W WINDS 25 TO 40 KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST N OF 63N E OF 39W WINDS 20 TO 30 KT. SEAS TO
11 FT.
…STORM WARNING…
.LOW 63N55W 980 MB MOVING SE 10 KT. WITHIN 120 NM S AND SW
QUADRANTS WINDS 40 TO 55 KT. SEAS 12 TO 20 FT. ELSEWHERE NW OF A
LINE FROM 48N48W TO 60N48W TO 65N52W WINDS 25 TO 40 KT. SEAS 8
TO 15 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED IN ABOVE
PARAGRAPH.
…GALE WARNING…
.LOW 31N42W 1010 MB MOVING NW 05 KT. FROM 31N TO 39N E OF 48W
WINDS 25 TO 35 KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 32N43W 1012 MB. E OF A LINE FROM 31N45W TO
35N45W TO 43N38W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST LOW 37N43W 1017 MB. FROM 31N TO 42N E OF 44W
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
…GALE WARNING…
.24 HOUR FORECAST N OF 60N W OF 52W AREA OF SW TO W WINDS 25 TO
35 KT. SEAS TO 11 FT.
.48 HOUR FORECAST FROM 61N TO 63N W OF 55W WINDS 20 TO 30 KT.
SEAS TO 8 FT.
…HEAVY FREEZING SPRAY WARNING…
.MODERATE TO HEAVY FREEZING SPRAY N OF 53N W OF 53W…AND N OF
64N W OF GREENLAND. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY
NW AND N OF A LINE FROM 44N66W TO 51N49W TO 60N45W TO 65N35W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW AND N OF A
LINE FROM 55N59W TO 65N53W. ELSEWHERE LIGHT TO MODERATE FREEZING
SPRAY NW AND N OF A LINE FROM 47N64W TO 51N50W TO 65N35W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NW AND N OF
LINE FROM 56N60W TO 66N53W…AND IN THE GULF OF SAINT LAWRENCE W
OF 64W. ELSEWHERE LIGHT TO MODERATE FREEZING SPRAY NW AND N OF A
LINE FROM 42N67W TO 45N60W TO 57N56W TO 60N41W TO 64N35W.
.SYNOPSIS AND FORECAST.
.LOW 62N39W 986 MB MOVING NE 15 KT. WITHIN 180 NM S QUADRANT
WINDS 25 KT. SEAS 8 TO 13 FT.
.12 HOUR FORECAST LOW DISSIPATED AND CONDITIONS MOVED E OF AREA.
.48 HOUR FORECAST NEW LOW 38N60W 1011 MB. FROM 34N TO 42N
BETWEEN 58W AND 75W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 54N TO 65N
BETWEEN 35W AND 64W.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 51N BETWEEN 48W AND
69W…N OF 57N E OF 59W.
.48 HOUR FORECAST DENSE FOG FROM 53N TO 61N E OF 51W…AND N OF
47N W OF 51W.
.FORECASTER KELLS. 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 1200 UTC FRI DEC 20.
24 HOUR FORECAST VALID 1200 UTC SAT DEC 21.
48 HOUR FORECAST VALID 1200 UTC SUN DEC 22.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC FROM 21N TO 22N BETWEEN 54W AND 57W E WINDS 20 TO 25 KT.
SEAS 10 TO 11 FT IN NE SWELL. ELSEWHERE WITHIN 22N45W TO 26N62W
TO 22N61W TO 25N71W TO 09N53W TO 16N53W TO 22N45W…INCLUDING IN
ATLANTIC EXPOSURES AND PASSAGES…WINDS 20 KT OR LESS. SEAS 8 TO
10 FT IN NE SWELL.
.24 HOUR FORECAST WITHIN 20N51W TO 22N57W TO 21N58W TO 19N55W TO
18N53W TO 19N50W TO 20N51W WINDS 20 KT OR LESS. SEAS 8 FT IN NE
TO E SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.
.ATLC LOW PRES NEAR 31N42.5W 1010 MB. WITHIN 31N41W TO 31N42W TO
31N44W TO 30N44W TO 29N41W TO 30N41W TO 31N41W WINDS 20 TO 30
KT. SEAS 10 TO 14 FT IN NE SWELL. WITHIN 31N46W TO 31N47W TO
30N46W TO 30N45W TO 31N46W NW TO N WINDS 20 TO 25 KT. SEAS 12 TO
15 FT IN NE SWELL. ELSEWHERE WITHIN 31N35W TO 31N49W TO 28N47W
TO 27N43W TO 28N41W TO 25N35W TO 31N35W WINDS 20 KT OR LESS.
SEAS 8 TO 16 FT IN NE SWELL…EXCEPT E OF 38W SEAS 8 FT IN E
SWELL.
.24 HOUR FORECAST LOW PRES NEAR 32N43.5W 1012 MB. WITHIN 31N35W
TO 31N42W TO 29N38W TO 29N37W TO 29N35W TO 31N35W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN E SWELL.
.48 HOUR FORECAST LOW PRES TO MOVE N. WITHIN 31N35W TO 31N38W TO
30N37W TO 28N36W TO 28N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 8
TO 9 FT IN E SWELL.
.ATLC 12 HOUR FORECAST WITHIN 31N75.5W TO 31N80W TO 30.5N80W TO
30.5N79.5W TO 30.5N78W TO 30.5N75.5W TO 31N75.5W W TO NW WINDS
20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WITHIN 31N62W TO 31N76W TO 30N76W TO 29N73W TO
30N71W TO 31N62W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN W TO NW
SWELL.
.48 HOUR FORECAST WITHIN 31N65W TO 31N75W TO 30N75W TO 29N74W TO
29N69W TO 30N66W TO 31N65W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN NW TO N SWELL.
.ATLC 39 HOUR FORECAST WITHIN 08N40W TO 09N42W TO 08N43W TO
07N43W TO 07N41W TO 07N40W TO 08N40W WINDS 20 KT OR LESS. SEAS 8
FT IN MIXED N AND E SWELL.
.48 HOUR FORECAST WITHIN 10N41W TO 12N44W TO 12N48W TO 08N47W TO
07N45W TO 07N39W TO 10N41W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN MIXED N
