HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC SAT OCT 10 2026
CCODE/1:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
FROM OCTOBER 15 TO APRIL 1, DUE TO THE CLIMATOLOGY OF THE NORTH
ATLANTIC AND THE FREQUENCY AND VOLUME OF WEATHER HAZARDS, ALONG
WITH CUSTOMER FEEDBACK, HIGH SEAS FORECASTS WILL BE LIMITED TO
WINDS OF 25 TO 35 KNOTS AND HIGHER, AND SEAS OF 4 METERS OR
GREATER, ALONG WITH FREEZING SPRAY, DENSE FOG, VOLCANIC ASH, AND
ANYTHING TROPICAL (INCLUDING A DEPRESSION). LESSER CONDITIONS
WILL BE INCLUDED FOR WARNING CONDITIONS AND TO PRESERVE
CONTINUITY WHERE APPROPRIATE.
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1800 UTC OCT 10.
24 HOUR FORECAST VALID 1800 UTC OCT 11.
48 HOUR FORECAST VALID 1800 UTC OCT 12.
.WARNINGS.
...STORM WARNING...
.LOW 55N39W 984 MB MOVING N 10 KT AND RAPIDLY INTENSIFYING.
EXCEPT WHERE DESCRIBED BELOW...FROM 42N TO 59N E OF 47W WINDS 20
TO 30 KT. SEAS TO 3.5 M IN MIXED SWELL.
.12 HOUR FORECAST LOW 58N39W 968 MB. FROM 55N TO 61N E OF 42W
WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 59N39W 959 MB. FROM 56N TO 63N BETWEEN 38W
AND 43W AND FROM 56N TO 66N BETWEEN 48W AND 56W WINDS 40 TO 55
KT. SEAS 4.5 TO 9 M...HIGHEST NEAR 59N42W. ELSEWHERE N OF 47N W
OF 35W...NOT INCLUDING THE GULF OF SAINT LAWRENCE...WINDS 25 TO
40 KT. SEAS 2.5 TO 7 M...HIGHEST NEAR 52N46W.
.48 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER NEAR 62N36W 958
MB. FROM 58N TO 67N BETWEEN 49W AND 60W AND WITHIN 90 NM E AND SE
OF GREENLAND COAST WINDS 35 TO 50 KT. SEAS 5 TO 8.5 M.
ELSEWHERE...EXCEPT WHERE DESCRIBED WITH LOW 49N51W BELOW...N OF
40N W OF 35W WINDS 25 TO 40 KT. SEAS 2.5 TO 7 M...HIGHEST FROM
50N TO 60N E OF 58W.
...GALE WARNING...
.COMPLEX LOW WITH FIRST CENTER 59N49W 986 MB MOVING SE 10 KT AND
SECOND CENTER 59N41W 989 MB NEARLY STATIONARY. WITHIN 120 NM S
AND SE OF GREENLAND COAST E OF 47W AND S OF 63N WINDS 30 TO 45
KT. SEAS 3 TO 5.5 M. ELSEWHERE N OF 50N W OF 45W WINDS 25 TO 40
KT. SEAS 2.5 TO 5.5 M...HIGHEST NEAR 58N52W. ALSO N OF 60N E OF
GREENLAND WINDS TO 25 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST COMPLEX LOW AND ASSOCIATED CONDITIONS ABSORBED
BY LOW 59N39W DESCRIBED ABOVE.
...GALE WARNING...
.FROM 37N TO 50N BETWEEN 44W AND 67W NW TO W WINDS 25 TO 35 KT.
SEAS 2.5 TO 5 M.
.24 HOUR FORECAST S OF 47N E OF 62W NW TO W WINDS 20 TO 30 KT.
SEAS 2.5 TO 5 M IN MIXED SWELL.
.48 HOUR FORECAST S OF 41N E OF 50W WINDS LESS THAN 25 KT. SEAS
TO 4 M IN MIXED SWELL...HIGHEST NEAR 41N.
...GALE WARNING...
.LOW WELL INLAND. FROM 33N TO 36N W OF 71W AREA OF SE TO E WINDS
20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW WELL INLAND. S OF 40N W OF 68W WINDS 25 TO
35 KT. SEAS TO 4 M.
.48 HOUR FORECAST LOW 41N62W 997 MB. WITHIN 240 NM S AND SE
QUADRANTS WINDS 30 TO 45 KT. SEAS TO 4 M. ELSEWHERE FROM 32N TO
43N W OF 49W WINDS 20 TO 30 KT. SEAS TO 4 M.
.SYNOPSIS AND FORECAST.
.FROM 32N TO 44N E OF 52W WINDS TO 25 KT. SEAS TO 4 M.
.24 HOUR FORECAST CONDITIONS DESCRIBED ABOVE WITH SECOND GALE
WARNING.
.48 HOUR FORECAST NEW LOW 49N51W 993 MB. FROM 40N TO 51N W OF 47W
WINDS 20 TO 30 KT. SEAS 2.5 TO 4.5 M...HIGHEST E.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 51N TO 65N
BETWEEN 35W AND 42W AND FROM 58N TO 62N BETWEEN 48W AND 53W.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM OF THE E GREENLAND
COAST...FROM 56N TO 60N BETWEEN 36W AND 44W...AND FROM 63N TO 66N
BETWEEN 60W AND 63W.
.48 HOUR FORECAST DENSE FOG WITHIN 900 NM OF E GREENLAND
COAST...FROM 56N TO 61N BETWEEN 52W AND 57W...AND FROM 49N TO 52N
BETWEEN 44W AND 56W.
.FORECASTER JOSEPH. OCEAN PREDICTION CENTER.
NWS NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 1800 UTC SAT OCT 10.
24 HOUR FORECAST VALID 1800 UTC SUN OCT 11.
48 HOUR FORECAST VALID 1800 UTC MON OCT 12.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 21N35W TO 17N38W TO 16N38W TO 13N40W TO 13N39W TO
15N35W TO 21N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC 24 HOUR FORECAST COLD FRONT FROM 31N43W TO 27N55W. WITHIN
31N43W TO 31N49W TO 30N49W TO 29N46W TO 30N43W TO 31N43W N TO NE
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST COLD FRONT FROM 31N35W TO 26N55W. WITHIN
31N36W TO 31N55W TO 29N58W TO 26N52W TO 26N46W TO 31N36W WINDS 20
KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.ATLC AND CARIBBEAN 06 HOUR FORECAST WITHIN 20N73W TO 20N75W TO
19N75W TO 19N74W TO 20N74W TO 20N73W...INCLUDING THE WINDWARD
PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 14N69W TO 14N75W TO 13N77W TO 11N76W TO 12N72W
TO 11N68W TO 14N69W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.GULF OF AMERICA COLD FRONT FROM 30N85W TO 23N95W. WITHIN 27N92W
TO 27N97W TO 24N97W TO 22N96W TO 22N94W TO 24N92W TO 27N92W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL.
.12 HOUR FORECAST COLD FRONT FROM 26N82W TO 26N88W THEN
STATIONARY TO 29N95W. CONDITIONS IMPROVE. WINDS 20 KT OR LESS.
SEAS LESS THAN 2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
$$