HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC THU OCT 15 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 15.
24 HOUR FORECAST VALID 0000 UTC OCT 16.
48 HOUR FORECAST VALID 0000 UTC OCT 17.
.WARNINGS.
...STORM WARNING...
.LOW 47N64W 1001 MB MOVING NE 25 KT. WITHIN 420 NM E AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS TO 4 M. ELSEWHERE FROM 39N TO
50N BETWEEN 51W AND 64W AND FROM 36N TO 41N BETWEEN 64W AND 72W
WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 51N51W 984 MB. FROM 37N TO 53N BETWEEN 52W
AND 60W WINDS 30 TO 45 KT. SEAS 3 TO 6 M. ELSEWHERE S OF 58N E OF
66W WINDS 25 TO 40 KT. SEAS 2.5 TO 6.5 M...HIGHEST NEAR 52N48W.
.48 HOUR FORECAST COMPLEX LOW WITH FIRST CENTER 52N45W 978 MB AND
SECOND NEW CENTER 58N48W 979 MB. WITHIN 240 NM W AND SW OF A LINE
FROM 60N50W TO 52N44W TO 49N40W AND WITHIN 120 NM S OF GREENLAND
COAST BETWEEN 42W AND 49W WINDS 35 TO 50 KT. SEAS 5 TO 9.5 M.
ELSEWHERE E OF A LINE FROM 67N68W TO 40N47W WINDS 25 TO 40 KT.
SEAS 2.5 TO 7 M...HIGHEST NEAR 47N43W. ALSO S OF 53N E OF 60W
WINDS LESS THAN 25 KT. SEAS 2.5 TO 5 M.
...GALE WARNING...
.FROM 55N TO 60N E OF 48W WINDS 30 TO 45 KT. SEAS 4 TO 7 M.
ELSEWHERE E OF A LINE FROM 61N53W TO 47N41W AND FROM 64N TO 66N
BETWEEN GREENLAND COAST AND 38W WINDS 25 TO 35 KT. SEAS 3 TO 6 M.
ALSO...EXCEPT WHERE OTHERWISE DESCRIBED...S OF 62N E OF 60W WINDS
LESS THAN 24 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST LOW FROM 58N TO 62N E OF 47W WINDS 25 TO 35 KT.
SEAS 3 TO 5.5 M. ALSO N OF 58N E OF 47W WINDS LESS THAN 25 KT.
SEAS TO 4 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.
...GALE WARNING...
.24 HOUR FORECAST NEW LOW 62N55W 992 MB. W OF A LINE FROM 65N64W
TO 56N53W WINDS 25 TO 35 KT. SEAS TO 3 M. ELSEWHERE N OF 58N W OF
47W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 65N54W 992 MB. CONDITIONS DESCRIBED ABOVE
WITH FIRST WARNING.
.SYNOPSIS AND FORECAST.
.COMPLEX LOW WITH FIRST CENTER 35N54W 1013 MB MOVING NE 25 KT
AND SECOND CENTER 38N37W 1018 MB MOVING E 25 KT. WITHIN 300 NM N
OF FRONT FROM FIRST CENTER TO SECOND CENTER TO 38N35W WINDS TO 25
KT. SEAS 3 TO 4.5 IN MIXED SWELL.
.24 HOUR FORECAST COMPLEX LOW DISSIPATED. CONDITIONS DESCRIBED
ABOVE WITH FIRST WARNING.
.48 HOUR FORECAST INLAND LOW NEAR 47N69W 996 MB. FROM 34N TO 47N
W OF 60W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 46N
BETWEEN 58W AND 63W AND WITHIN 150 NM N AND NE OF A LINE FROM
65N64W TO 65N60W TO 61N53W.
.24 HOUR FORECAST DENSE FOG N OF 47N BETWEEN 48W AND 64W.
.48 HOUR FORECAST DENSE FOG FROM 65N TO 67N W OF 53W...FROM 55N
TO 63N BETWEEN 47W AND 52W...AND WITHIN 90 NM OF E GREENLAND
COAST.
.LIGHT FREEZING SPRAY N OF 65N BETWEEN 37W AND 40W.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LIGHT FREEZING SPRAY N OF 61N W OF 61W.
.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 0000 UTC THU OCT 15.
24 HOUR FORECAST VALID 0000 UTC FRI OCT 16.
48 HOUR FORECAST VALID 0000 UTC SAT OCT 17.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 27N35W TO 27N38W TO 25N38W TO 23N38W TO 23N35W TO
27N35W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC 24 HOUR FORECAST WITHIN 31N35W TO 31N52W TO 30N50W TO
29N43W TO 30N35W TO 31N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN N SWELL.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.GULF OF AMERICA 42 HOUR FORECAST WITHIN 29N95W TO 29N97W TO
28N97W TO 26N97W TO 27N94W TO 28N93W TO 29N95W N TO NE WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 28N94W TO 30N95W TO 29N97W TO 28N97W TO
26N97W TO 26N96W TO 28N94W N WINDS 20 TO 30 KT. SEAS 2.5 TO 3.0
M. WITHIN 24N96W TO 26N96W TO 26N97W TO 23N98W TO 21N97W TO
22N97W TO 24N96W N TO NE WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER ERA. NATIONAL HURRICANE CENTER.
$$