HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC TUE OCT 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 1200 UTC OCT 20.
24 HOUR FORECAST VALID 1200 UTC OCT 21.
48 HOUR FORECAST VALID 1200 UTC OCT 22.
.WARNINGS.
...STORM WARNING...
.LOW 36N70W 1001 MB MOVING NE 05 KT. WITHIN 180 NM W AND NW
QUADRANTS WINDS 35 TO 45 KT. SEAS 4 TO 7 M. ELSEWHERE W OF A
LINE FROM 31N71W TO 33N66W TO 43N60W WINDS 25 TO 40 KT. SEAS 3
TO 6 M.
.18 HOUR FORECAST LOW 36N69W 997 MB. WITHIN 180 NM NW SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 5.5 TO 7.5 M.
.24 HOUR FORECAST LOW 36N70W 997 MB. WITHIN 180 NM W AND NW
QUADRANTS WINDS 40 TO 50 KT. SEAS 5.5 TO 8 M. ELSEWHERE W OF A
LINE FROM 32N73W TO 42N55W TO 44N62W WINDS 25 TO 40 KT. SEAS 2.5
TO 6 M...HIGHEST W AND NW OF LOW.
.48 HOUR FORECAST LOW 38N68W 989 MB. NW OF A LINE FROM 33N72W TO
36N62W TO 43N64W WINDS 25 TO 40 KT. SEAS 3 TO 6 M.
...STORM WARNING...
.LOW 57N48W 1001 MB MOVING NE 20 KT. E OF A LINE FROM 47N52W TO
55N55W TO 60N45W WINDS 25 TO 35 KT. SEAS 2.5 TO 6 M...HIGHEST
NEAR 54N35W.
.18 HOUR FORECAST LOW 62N35W 987 MB. FROM 57N TO 60N BETWEEN 37W
AND 44W WINDS 40 TO 50 KT. SEAS 4.5 TO 7 M.
.24 HOUR FORECAST LOW JUST E OF AREA NEAR 62N34W 986 MB. FROM
57N TO 60N E OF 45W WINDS 35 TO 45 KT. SEAS 4 TO 7.5 M.
ELSEWHERE FROM 54N TO 61N E OF 58W WINDS 25 TO 40 KT. SEAS 3 TO
6 M.
.48 HOUR FORECAST LOW JUST E OF AREA NEAR 60N31W 980 MB. FROM
56N TO 59N E OF 38W WINDS 35 TO 45 KT. SEAS 6 TO 7.5 M.
ELSEWHERE E OF A LINE FROM 50N55W TO 55N55W TO 65N38W WINDS 25
TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST E.
...STORM WARNING...
.LOW JUST E OF AREA NEAR 65N34W 984 MB MOVING SW 10 KT. N OF 62N
E OF 40W WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.18 HOUR FORECAST LOW 63N40W 986 MB. N OF 65N E OF 38W WINDS 40
TO 50 KT. SEAS 4 TO 5.5 M.
.24 HOUR FORECAST LOW 62N40W 988 MB. N OF 64N E OF 40W WINDS 30
TO 45 KT. SEAS 3 TO 5.5 M.
.48 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 60N31W
DESCRIBED ABOVE.
...GALE WARNING...
.LOW 43N60W 1015 MB MOVING NE 40 KT. FROM 31N TO 43N BETWEEN 44W
AND 60W WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 46N39W 1010 MB. FROM 41N TO 47N E OF 47W
WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW AND CONDITIONS E OF AREA.
...GALE WARNING...
.NW AND N OF A LINE FROM 54N56W TO 60N51W AREA OF NW TO NW WINDS
20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 67N59W 1008 MB. N OF 66N W OF 59W WINDS 20
TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW ABSORBED BY NEW SECOND LOW 58N58W 997 MB.
N OF 57N W OF 53W WINDS 25 TO 35 KT. SEAS TO 3 M.
.SYNOPSIS AND FORECAST.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM N OF 63N E OF
GREENLAND...AND FROM 54N TO 58N W OF 45W.
.24 HOUR FORECAST DENSE FOG N OF 62N E OF GREENLAND...AND FROM
59N TO 66N W OF 52W.
.48 HOUR FORECAST DENSE FOG FROM 55N TO 60N W OF 46W.
.LIGHT FREEZING SPRAY NW AND N OF A LINE FROM 58N62W TO
63N50W...AND W OF 39W WITHIN 60 NM OF THE GREENLAND COAST.
.24 HOUR FORECAST LIGHT FREEZING SPRAY N OF 62N W OF 50W...AND W
OF 42W WITHIN 60 NM OF THE GREENLAND COAST.
.48 HOUR FORECAST LITTLE CHANGE.
.FORECASTER KELLS. 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 1200 UTC TUE OCT 20.
24 HOUR FORECAST VALID 1200 UTC WED OCT 21.
48 HOUR FORECAST VALID 1200 UTC THU OCT 22.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC COLD FRONT FROM 31N68W TO 24N74W TO 21N77W. WITHIN 31N67W
TO 31N81W TO 24N82W TO 25N76W TO 21N69W TO 31N69W...INCLUDING IN
THE STRAITS OF FLORIDA AND IN ATLC EXPOSURES...WINDS 20 KT OR
LESS...EXCEPT S OF 27N W OF 78W NE WINDS 20 TO 25 KT. SEAS 2.5
TO 3.5 M IN N TO NE SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N67W TO 25N70W THEN
DISSIPATING STATIONARY FRONT TO 21N76W. WITHIN 31N68W TO 31N81W
TO 26N80W TO 25N77W TO 28N70W TO 31N68W...INCLUDING IN ATLC
EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN N TO NE
SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 31N66W TO 25N69W.
WITHIN 31N67W TO 31N81W TO 28N80W TO 26N76W TO 28N74W TO 26N71W
TO 31N67W...INCLUDING IN ATLC EXPOSURES...WINDS 20 KT OR LESS.
SEAS 2.5 TO 3 M IN N TO NE SWELL.
.ATLC WITHIN 31N48W TO 31N52W TO 30N51W TO 30N49W TO 30N48W TO
31N48W E TO SE WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M. ELSEWHERE
WITHIN 31N46W TO 31N57W TO 30N54W TO 30N51W TO 29N48W TO 31N46W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN E TO SE SWELL.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.GULF OF AMERICA TROUGH FROM 29N93W TO 18N94W. WITHIN 27N88W TO
29N90W TO 28N92W TO 28N96W TO 26N90W TO 26N87W TO 27N88W NE TO E
WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.18 HOUR FORECAST TROUGH TO WEAKEN ALONG 95W S OF 26N. WINDS 20
KT OR LESS. SEAS LESS THAN 2.5 M.
.GULF OF AMERICA WITHIN 20N94W TO 21N95W TO 21N96W TO 20N96W TO
19N96W TO 19N94W TO 20N94W...INCLUDING WITHIN 60 NM OF COAST OF
VERACRUZ...NW TO N WINDS 20 TO 25 KT. SEAS 2.5 TO 3 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST 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 AGUIRRE. NATIONAL HURRICANE CENTER.