HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SUN AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 16.
24 HOUR FORECAST VALID 1200 UTC AUG 17.
48 HOUR FORECAST VALID 1200 UTC AUG 18.
.WARNINGS.
...GALE WARNING...
.LOW 34N58W 1012 MB MOVING NE 20 KT. FROM 31N TO 36N BETWEEN 58W
AND 67W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW 38N48W 1006 MB. FROM 35N TO 42N BETWEEN
45W AND 51W WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE FROM 31N
TO 44N BETWEEN 46W AND 54W AND WITHIN 480 NM E AND SE QUADRANTS
WINDS 20 TO 30 KT. SEAS TO 3 M...HIGHEST S OF LOW.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 41N47W 1013 MB.
WITHIN AN AREA BOUNDED BY A LINE FROM 31N49W TO 46N35W TO 49N35W
TO 43N51W TO 39N47W TO 31N49W WINDS 20 TO 30 KT. SEAS TO 3 M.
...GALE WARNING...
.36 HOUR FORECAST WITHIN 240 NM E OF A LINE FROM 67N62W TO
56N56W TO 46N65W WINDS TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST NEW LOW 67N60W 1004 MB. WITHIN 90 NM W OF
GREENLAND N OF 62N AREA OF SE WINDS 25 TO 35 KT. SEAS TO 3 M.
ELSEWHERE N OF 53N BETWEEN 50W AND 56W WINDS TO 25 KT. SEAS TO
2.5 M.
...GALE WARNING...
.36 HOUR FORECAST LOW 39N71W 1007 MB. FROM 37N TO 39N BETWEEN
67W AND 70W WINDS 25 TO 35 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 41N68W 1007 MB. FROM 37N TO 40N BETWEEN
65W AND 67W WINDS 25 TO 35 KT. SEAS TO 3.5 M. ELSEWHERE WITHIN
360 NM E AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M.
.SYNOPSIS AND FORECAST.
.COMPLEX LOW WITH MAIN CENTER 53N38W 1001 MB MOVING NE 20 KT.
WITHIN 180 NM NE...420 NM E AND 300 NM S QUADRANTS AND WITHIN
240 NM E AND SE OF A FRONT EXTENDING FROM 49N36W TO 39N46W TO
35N53W WINDS 20 TO 30 KT. SEAS TO 3.5 M...HIGHEST NEAR 41N40W.
.24 HOUR FORECAST LOW E OF AREA 59N28W 993 MB. BETWEEN 64N AND A
LINE FROM 54N35W TO 58N44W WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW E OF AREA 60N15W 994 MB. FROM 56N TO 60N
BETWEEN 35W AND 38W AREA OF W WINDS TO 25 KT. SEAS TO 2.5 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 50N TO 54N
BETWEEN 35W AND 45W.
.24 HOUR FORECAST CONDITIONS IMPROVED.
.48 HOUR FORECAST DENSE FOG N OF 40N BETWEEN 67W AND 70W.
.FORECASTER BANCROFT. 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 SUN AUG 16.
24 HOUR FORECAST VALID 1200 UTC MON AUG 17.
48 HOUR FORECAST VALID 1200 UTC TUE AUG 18.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC 06 HOUR FORECAST WITHIN 31N57W TO 31N62W TO 29N62W TO
29N61W TO 29N59W TO 30N58W TO 31N57W W WINDS 20 TO 25 KT. SEAS
LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 31N49W TO 31N54W TO 29N54W TO 29N51W TO
31N49W SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.ATLC AND CARIBBEAN WITHIN 21N72W TO 21N74W TO 20N77W TO 19N77W
TO 18N75W TO 19N73W TO 21N72W...INCLUDING BETWEEN CUBA AND
JAMAICA... E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 15N66W TO 18N68W TO 18N74W TO 15N81W TO 11N82W
TO 11N67W TO 15N66W NE TO E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M.
.24 HOUR FORECAST WITHIN 18N71W TO 18N74W TO 15N81W TO 12N79W TO
11N72W TO 12N70W TO 18N71W E WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0
M.
.48 HOUR FORECAST WITHIN 15N78W TO 14N82W TO 13N82W TO 11N81W TO
11N79W TO 12N78W TO 15N78W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN E SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.