140
FZNT01 KWBC 202217
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC WED AUG 20 2025

CCODE/2:31:04:11:00/AOE+AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

...HURRICANE WARNING...
.SEE TAFB PORTION BELOW FOR MORE INFORMATION ON ERIN.
.EXCEPT WHERE DESCRIBED IN TAFB PORTION BELOW...FROM 31N TO 37N
BETWEEN 66W AND 80W WINDS 20 TO 33 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST HURRICANE ERIN NEAR 35.5N 70.6W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 230 NM N SEMICIRCLE...240 NM SE QUADRANT AND 220 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 360 NM NE...450 NM SE...480
NM SW...AND 330 NM NW QUADRANTS WITH SEAS TO 17 M. ELSEWHERE
FROM 31N TO 42N BETWEEN 62W AND 77W WINDS 20 TO 33 KT. SEAS 2.5
TO 4 M.
.48 HOUR FORECAST HURRICANE ERIN NEAR 39.2N 63.0W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS
WITHIN 300 NM NE QUADRANT...250 NM NW QUADRANT...AND 240 NM S
SEMICIRCLE. SEAS 4 M OR GREATER WITHIN 360 NM NE...540 NM
SE...660 NM SW...AND 420 NM NW QUADRANTS WITH SEAS TO 15.5 M.
ELSEWHERE FROM 31N TO 46N BETWEEN 50W AND 74W WINDS 20 TO 33 KT.
SEAS TO 4 M.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

...GALE WARNING...
.LOW 52N45W 998 MB DRIFTING N. BETWEEN 120 NM AND 480 NM W AND
SW QUADRANTS WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M. ELSEWHERE
EXCEPT WHERE NOTED IN GALE WARNING BELOW...WITHIN 600 NM NW
SEMICIRCLE...480 NM S AND 300 NM SE QUADRANTS WINDS 20 TO 30 KT.
SEAS TO 3 M.
.24 HOUR FORECAST LOW 53N45W 993 MB. WITHIN 150 NM N OF A LINE
FROM 55N51W TO 58N41W WINDS 35 TO 45 KT. SEAS 3.5 TO 5.5 M. ALSO
WITHIN 420 NM SW SEMICIRCLE AND WITHIN 180 NM NW AND N OF A LINE
FROM 53N49W TO 59N37W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
ELSEWHERE FROM 45N TO 64N E OF 59W WINDS TO 25 KT. SEAS TO 3.5
M.
.48 HOUR FORECAST LOW 54N42W 995 MB. WITHIN 240 NM N OF A LINE
FROM 54N48W TO 58N41W WINDS 25 TO 40 KT. SEAS 3 TO 4.5 M.
ELSEWHERE WITHIN 600 NM N AND S...480 NM W AND 300 NM SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 4 M...HIGHEST S AND SW OF
LOW.

...GALE WARNING...
.WITHIN 180 NM N OF A LINE FROM 56N48W TO 57N40W AREA OF NE
WINDS 30 TO 45 KT. SEAS 2.5 TO 5 M.
.24 HOUR FORECAST CONDITIONS ABSORBED BY LOW 53N45W DESCRIBED
ABOVE.

.SYNOPSIS AND FORECAST.

.LOW 37N41W 1012 MB MOVING NE 20 KT. E OF A LINE FROM 40N35W TO
32N48W WINDS TO 25 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW E OF AREA 40N33W 1012 MB. WITHIN 480 NM S
QUADRANT WINDS LESS THAN 25 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

.48 HOUR FORECAST N OF 59N BETWEEN 50W AND 59W AREA OF N TO NW
WINDS 20 TO 30 KT. SEAS TO 3 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 53N TO 58N
BETWEEN 37W AND 51W AND WITHIN 60 NM W OF A LINE FROM 55N52W TO
49N48W.
.24 HOUR FORECAST DENSE FOG WITHIN 60 NM N OF A LINE FROM 56N45W
TO 59N35W...FROM 52N TO 57N W OF 53W...AND N OF 60N BETWEEN 48W
AND 51W.
.48 HOUR FORECAST DENSE FOG FROM 54N TO 58N BETWEEN 41W AND 46W.

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

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ERIN NEAR 31.2N 73.6W 943 MB AT 2100 UTC AUG 20
MOVING N OR 360 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 95 KT GUSTS
115 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM W
SEMICIRCLE...220 NM NE QUADRANT AND 230 NM SE QUADRANT. SEAS 4 M
OR GREATER WITHIN 450 NM NE QUADRANT...420 NM SE QUADRANT...330
NM SW QUADRANT...AND 300 NM NW QUADRANT WITH SEAS TO 15 M.
ELSEWHERE WITHIN 31N67W TO 31N78W TO 28N77W TO 26N74W TO 26N69W
TO 27N68W TO 31N67W WINDS 20 TO 33 KT. SEAS 4.0 TO 9.0 M.
REMAINDER OF AREA WITHIN 31N62W TO 31N81W TO 29N81W TO 23N74W TO
23N70W TO 25N66W TO 31N62W...INCLUDING ATLANTIC EXPOSURES...WINDS
20 KT OR LESS. SEAS 2.5 TO 5.0 M IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE ERIN NEAR 35.5N 70.6W. MAXIMUM
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS
WITHIN 230 NM N SEMICIRCLE...240 NM SE QUADRANT AND 220 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 360 NM NE QUADRANT...450 NM
SE QUADRANT...480 NM SW QUADRANT...AND 330 NM NW QUADRANT WITH
SEAS TO 17 M. ELSEWHERE WITHIN 31N64W TO 31N74W TO 28N71W TO
28N69W TO 31N64W WINDS 20 TO 33 KT. SEAS 3.5 TO 6.5 M. REMAINDER
OF AREA WITHIN 31N61W TO 29N72W TO 31N80W TO 28N80W TO 26N72W TO
27N65W TO 31N61W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 5.0 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE ERIN NEAR 39.2N 63.0W. MAXIMUM
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM S SEMICIRCLE...300 NM NE QUADRANT AND 250 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 360 NM NE QUADRANT...540 NM
SE QUADRANT...660 NM SW QUADRANT...AND 420 NM NW QUADRANT WITH
SEAS TO 15.5 M. ELSEWHERE WITHIN 31N61W TO 31N63W TO 30.5N63W TO
30.5N62.5W TO 31N61W WINDS 20 TO 25 KT. SEAS 3.5 TO 4.5 M.
REMAINDER OF AREA WITHIN 31N57W TO 31N79W TO 27N73W TO 27N67W TO
31N57W WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN MIXED SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.ATLC 45 HOUR FORECAST WITHIN 20N58W TO 22N59W TO 21N60W TO
18N59W TO 19N58W TO 20N58W SE TO S WINDS 20 TO 25 KT. SEAS LESS
THAN 2.5 M.
.48 HOUR FORECAST WITHIN 22N58W TO 22N59W TO 21N61W TO 19N60W TO
18N59W TO 22N58W...INCLUDING IN ATLANTIC EXPOSURES AND
PASSAGES...SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.

.CARIBBEAN WITHIN 13N72W TO 13N74W TO 12N73W TO 11N70W TO 12N69W
TO 12N72W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST WITHIN 13N72W TO 14N74W TO 13N75W TO 12N74W TO
12N69W TO 13N72W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.45 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 ADAMS. NATIONAL HURRICANE CENTER.