486
FZNT01 KWBC 202134
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 20.
24 HOUR FORECAST VALID 1800 UTC AUG 21.
48 HOUR FORECAST VALID 1800 UTC AUG 22.

.WARNINGS.

...GALE WARNING...
.LOW 59N61W 999 MB MOVING N 10 KT. FROM 42N TO 63N BETWEEN 46W
AND 58W WINDS 20 TO 30 KT. SEAS TO 3 M.
.12 HOUR FORECAST LOW 62N60W 992 MB. FROM 61N TO 67N BETWEEN W
OF 48W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 61N63W 992 MB. N OF 60N W OF 59W WINDS 25
TO 35 KT. SEAS 2.5 TO 5 M.
.48 HOUR FORECAST LOW 58N53W 1003 MB. N OF 55N W OF 50W WINDS 20
TO 30 KT. SEAS TO 3.5 M.

...GALE WARNING...
.LOW 62N41W 1013 MB MOVING NE 10 KT. WITHIN 240 NM S QUADRANT
WINDS TO 25 KT. SEAS TO 2.5 M.
.12 HOUR FORECAST LOW 63N41W 1005 MB. WITHIN 240 NM S QUADRANT
WINDS 25 TO 35 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW 64N37W 1003 MB. NE AND E OF A LINE FROM
53N45W TO 61N43W WINDS TO 25 KT. SEAS TO 3.5 M.
.48 HOUR FORECAST LOW 63N35W 993 MB. WITHIN 300 NM W SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 2.5 TO 4 M.

.SYNOPSIS AND FORECAST.

.COMPLEX LOW WITH FIRST CENTER 47N39W 1016 MB MOVING SE 25 KT
AND SECOND CENTER 46N32W 1016 MB MOVING SE 25 KT. FROM 42N TO
50N BETWEEN 35W AND 42W WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW AND CONDITIONS E OF AREA.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 40N TO 46N
BETWEEN 65W AND 69W...NW OF A LINE FROM 43N58W TO 46N54W...N OF
52N W OF 54W...AND FROM 58N TO 64N E OF 54W.
.24 HOUR FORECAST DENSE FOG FROM 41N TO 46N BETWEEN 65W AND
69W...AND FROM 44N TO 65N BETWEEN 58W AND 41W.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 44N BETWEEN 65W AND
68W...FROM 43N TO 52N BETWEEN 44W AND 52W...AND FROM 50N TO 54N
E OF 38W.

.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 1800 UTC THU AUG 20.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 21.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.CARIBBEAN WITHIN 15N71W TO 16N76W TO 14N79W TO 10N76W TO 11N74W
TO 12N69W TO 15N71W NE TO E WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 17N71W TO 18N75W TO 14N79W TO 10N77W TO
12N72W TO 12N69W TO 17N71W NE TO E WINDS 20 TO 30 KT. SEAS 2.5 M.
.48 HOUR FORECAST WITHIN 16N75W TO 15N79W TO 14N81W TO 12N79W TO
12N76W TO 14N75W TO 16N75W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0
M IN E SWELL.

.GULF OF AMERICA 06 HOUR FORECAST WITHIN 21N91W TO 21N90W TO
22N92W TO 20N92W TO 19N92W TO 19N91W TO 21N91W NE WINDS 20 TO 30
KT. SEAS LESS THAN 2.5 M.
.18 HOUR FORECAST 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.