HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT DEC 20 2025
CCODE/2:31:04:01:00/AOE/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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
VOSOPS@NOAA.GOV(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 0600 UTC DEC 20.
24 HOUR FORECAST VALID 0600 UTC DEC 21.
48 HOUR FORECAST VALID 0600 UTC DEC 22.
.WARNINGS.
...HURRICANE FORCE WIND WARNING...
.LOW INLAND 53N66W 964 MB MOVING NE 25 KT AND RAPIDLY
INTENSIFYING. FROM 37N TO 52N BETWEEN 56W AND 63W WINDS 40 TO 55
KT. SEAS 4 TO 7.5 M. ELSEWHERE W OF A LINE FROM 33N65W TO 40N48W
TO 50N44W TO 54N45W TO 57N50W TO 58N53W WINDS 25 TO 40 KT. SEAS
2.5 TO 6.5 M.
.24 HOUR FORECAST LOW 60N54W 947 MB. WITHIN 240 NM SW SEMICIRCLE
WINDS 50 TO 70 KT. SEAS 5.5 TO 11 M. ELSEWHERE WITHIN 300 NM
NE...360 NM NW...240 NM SW...360 NM SE QUADRANTS WINDS 35 TO 50
KT. SEAS 4.5 TO 9 M. ELSEWHERE FROM 39N TO 62N BETWEEN 35W AND
56W...AND N OF 60N W OF 45W WINDS 25 TO 40 KT. SEAS 3.5 TO 7.5
M.
.48 HOUR FORECAST LOW 63N39W 978 MB. WITHIN 360 NM S QUADRANT
WINDS 35 TO 50 KT. SEAS 5 TO 9 M. ELSEWHERE N OF 52N E OF 45W
WINDS 25 TO 40 KT. SEAS 3 TO 7.5 M.
...STORM WARNING...
.LOW E OF AREA 60N28W 974 MB MOVING SE 20 KT. N OF 62N BETWEEN
35W AND 39W...AND 420 NM SW QUADRANT WINDS 35 TO 50 KT. SEAS 6
TO 9 M. ELSEWHERE E AND NE OF A LINE FROM 60N45W TO 55N42W TO
50N43W TO 44N39W WINDS 25 TO 40 KT. SEAS 4 TO 7.5 M.
.12 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.
...GALE WARNING...
.24 HOUR FORECAST INLAND LOW 49N77W 995 MB. FROM 38N TO 45N W OF
66W S TO SW WINDS 20 TO 30 KT. SEAS TO 3 M.
.36 HOUR FORECAST INLAND LOW 49N74W 997 MB. FROM 42N TO 46N
BETWEEN 64W AND 70W S TO SW WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST LOW 49N68W 999 MB AND
SECOND LOW 50N63W 1000 MB. WITHIN 420 NM S AND SE QUADRANTS OF
SECOND LOW AND 360 NM S QUADRANT OF FIRST LOW WINDS 25 TO 35 KT.
SEAS 2.5 TO 4 M.
...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY N OF 59N W OF 60W. ELSEWHERE N
OF 58N W OF 48W LIGHT TO MODERATE FREEZING SPRAY.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 50N52W TO 55N53W TO 58N60W TO 63N62W. ELSEWHERE LIGHT TO
MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 47N49W TO 55N49W
TO 60N61W TO 64N60W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W AND NW OF A
LINE FROM 54N56W TO 60N60W TO 64N58W TO 66N57W. ELSEWHERE LIGHT
TO MODERATE FREEZING SPRAY W AND NW OF A LINE FROM 46N62W TO
53N50W TO 56N46W TO 58N50W TO 62N50W.
.SYNOPSIS AND FORECAST.
.N OF 64N W OF GREENLAND AREA OF S TO SE WINDS 20 TO 30 KT. SEAS
TO 3 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 60N54W ABOVE.
.FROM 32N TO 39N BETWEEN 40W AND 55W WINDS 20 TO 30 KT. SEAS 2.5
TO 3 M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 55N TO 61N W
OF 45W.
.24 HOUR FORECAST DENSE FOG N OF 57N W OF 54W...AND FROM 61N TO
64N BETWEEN E COASTLINE OF GREENLAND AND 38W AND OVER GULF OF
SAINT LAWRENCE W OF 64W.
.48 HOUR FORECAST DENSE FOG FROM 50N TO 54N W OF 45W.
.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.
NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0600 UTC SAT DEC 20.
24 HOUR FORECAST VALID 0600 UTC SUN DEC 21.
48 HOUR FORECAST VALID 0600 UTC MON DEC 22.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 31N45W TO 31N64W TO 26N64W TO 22N61W TO 22N55W TO
31N45W SW TO W WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST WITHIN 31N47W TO 31N52W TO 29N52W TO 28N50W
TO 29N48W TO 31N47W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN E
TO SE SWELL.
.33 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC WITHIN 24N35W TO 24N45W TO 21N46W TO 17N43W TO 17N35W
TO 24N35W E WINDS 20 TO 25 KT. SEAS 2.5 TO 4.5 M. WITHIN 17N45W
TO 31N35W TO 29N48W TO 14N59W TO 06N54W TO 07N35W TO 17N45W WINDS
20 KT OR LESS. SEAS 2.5 TO 4.5 M IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 31N35W TO 31N41W TO 17N58W TO 06N52W
TO 07N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
TO E SWELL.
.48 HOUR FORECAST WITHIN 30N35W TO 25N43W TO 17N37W TO 17N35W
TO 30N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.
.ATLC WITHIN 31N72W TO 31N77W TO 30N77W TO 30N75W TO 30N73W TO
31N72W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN SW TO W SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 12N74W TO 13N76W TO 12N77W TO 10N77W TO 10N76W
TO 11N74W TO 12N74W NE TO E WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 12N73W TO 14N76W TO 14N79W TO 11N81W TO
10N78W TO 10N76W TO 12N73W NE TO E WINDS 20 TO 30 KT. SEAS 2.5
TO 3.0 M.
.48 HOUR FORECAST WITHIN 13N74W TO 13N76W TO 12N77W TO 11N77W
TO 10N76W TO 11N73W TO 13N74W NE TO E WINDS 20 TO 30 KT. SEAS 2.5
TO 3.0 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.