210
FZNT01 KWBC 180341
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC TUE AUG 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 18.
24 HOUR FORECAST VALID 0000 UTC AUG 19.
48 HOUR FORECAST VALID 0000 UTC AUG 20.

.WARNINGS.

...GALE WARNING...
.LOW 40N70W 1008 MB MOVING NE 10 KT. WITHIN 360 NM SE QUADRANT
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.06 HOUR FORECAST LOW 40N68W 1008 MB. WITHIN 360 NM SE QUADRANT
WINDS 25 TO 35 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 41N65W 1010 MB. WITHIN 300 NM E SEMICIRCLE
WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW DISSIPATED. FROM 43N TO 50N BETWEEN 56W
AND 61W WINDS 20 TO 30 KT. SEAS TO 3 M.

...GALE WARNING...
.FROM 62N TO 66N BETWEEN 52W AND 60W WINDS 20 TO 30 KT. SEAS TO
2.5 M.
.06 HOUR FORECAST LOW 66N59W 1005 MB. WITHIN 240 NM SE QUADRANTS
WINDS 25 TO 40 KT. SEAS TO 3 M.
.24 HOUR FORECAST N OF 66N BETWEEN THE W COAST OF GREENLAND AND
55W WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.SYNOPSIS AND FORECAST.

.FROM 46N TO 50N BETWEEN 59W AND 64W WINDS TO 25 KT. SEAS TO 2.5
M.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.COMPLEX LOW WITH MEAN CENTER 34N50W 1014 MB. WITHIN 540 NM NE
AND 360 NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW 37N48W 1016 MB. WITHIN 120 NM NW QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 41N47W 1018 MB. WINDS LESS THAN 25 KT.
SEAS LESS THAN 2.5 M.

.LOW 45N38W 1017 MB MOVING NE 25 KT.
.24 HOUR FORECAST LOW AND CONDITIONS MOVED E OF AREA.

.24 HOUR FORECAST LOW 45N43W 1018 MB. WITHIN 120 NM NE QUADRANT
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW 46N37W 1020 MB. WINDS LESS THAN 25 KT.
SEAS LESS THAN 2.5 M.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 61N TO 66N BETWEEN 60W AND 65W.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 44N BETWEEN 64W AND
69W...AND FROM 55N TO 59N BETWEEN 57W AND 62W...AND FROM 54N TO
65N BETWEEN 48W AND 57W.
.48 HOUR FORECAST DENSE FOG FROM 47N TO 50N BETWEEN 59W AND
65W...AND FROM 52N TO 56N BETWEEN 51W AND 57W...AND FROM 57N TO
64N BETWEEN 59W AND 62W...AND FROM 59N TO 64N BETWEEN 40W AND
55W.

.FORECASTER HOLLEY. 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 0000 UTC TUE AUG 18.
24 HOUR FORECAST VALID 0000 UTC WED AUG 19.
48 HOUR FORECAST VALID 0000 UTC THU AUG 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 31N48W TO 31N52W TO 30N53W TO 29N53W TO 29N52W TO
31N48W SW WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.CARIBBEAN WITHIN 17N75W TO 16N81W TO 12N82W TO 10N79W TO 13N76W
TO 12N70W TO 17N75W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST WITHIN 13N71W TO 13N74W TO 12N77W TO 11N75W TO
11N73W TO 11N71W TO 13N71W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 M.
.48 HOUR FORECAST WITHIN 14N70W TO 15N75W TO 11N76W TO 12N73W TO
10N72W TO 11N69W TO 14N70W...INCLUDING THE GULF OF
VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

$$
.FORECASTER DELGADO. NATIONAL HURRICANE CENTER.