422
FZNT01 KWBC 210416
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC THU AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 21.
24 HOUR FORECAST VALID 0000 UTC AUG 22.
48 HOUR FORECAST VALID 0000 UTC AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ERIN NEAR 32.8N 73.1W 942 MB AT 0300 UTC AUG 21 MOVING
N OR 010 DEG AT 14 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 480 NM NE QUADRANT...390 NM SE QUADRANT...360 NM SW
QUADRANT...AND 300 NM NW QUADRANT WITH SEAS TO 15 M. ELSEWHERE
FROM 31N TO 41N BETWEEN 63W AND 80W WINDS 20 TO 33 KT. SEAS 2.5
TO 4 M.
.24 HOUR FORECAST HURRICANE ERIN NEAR 36.8N 69.0W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM NE QUADRANT...250 NM SE QUADRANT...220 NM SW
QUADRANT...AND 230 NM NW QUADRANT. SEAS 4 M OR GREATER 360 NM
NE...450 NM SE...480 NM SW...AND 330 NM NW QUADRANTS WITH SEAS TO
17 M. ELSEWHERE FROM 31N TO 43N BETWEEN 58W AND 77W WINDS 20 TO
33 KT. SEAS 2.5 TO 4 M.
.48 HOUR FORECAST HURRICANE ERIN NEAR 40.4N 60.5W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 240 NM W SEMICIRCLE...290 NM NE QUADRANT AND 250 NM SE
QUADRANT. 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 32N TO 46N BETWEEN 46W AND 70W WINDS 20 TO 33 KT. SEAS 2.5
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 57N44W 998 MB MOVING N 05 KT. WITHIN 180 NM N OF A LINE FROM
56N50W TO 59N40W WINDS 35 TO 45 KT. SEAS 3 TO 5 M. ELSEWHERE
WITHIN 420 NM S...AND 540 NM W QUADRANTS...AND FROM 55N TO 60N E
OF 60W WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.
.24 HOUR FORECAST LOW 53N44W 995 MB. WITHIN 420 NM SE...480 NM
SW...AND 420 NM NW QUADRANTS...AND WITHIN 180 NM N OF A LINE FROM
56N45W TO 60N40W TO 60N35W WINDS 25 TO 40 KT. SEAS 2.5 M TO 5 M.
.48 HOUR FORECAST LOW 54N41W 995 MB. WITHIN 540 NM S...AND 480 NM
W SEMICIRCLES WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.

.SYNOPSIS AND FORECAST.

.LOW 39N38W 1013 MB MOVING NE 15 KT. WITHIN 300 NM E...AND 360 NM
S QUADRANTS WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MOVED E OF AREA.

.24 HOUR FORECAST FROM 60N TO 67N BETWEEN 50W AND 56W WINDS 20 TO
30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST N OF 60N BETWEEN 52W AND 58W WINDS 20 TO 30 KT.
SEAS TO 2.5 M.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 53N TO 60N
BETWEEN 50W AND 35W.
.24 HOUR FORECAST DENSE FOG WITHIN 60 NM W OF GREENLAND.
.48 HOUR FORECAST CONDITIONS IMPROVING.

.FORECASTER BYRD. 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 AUG 21.
24 HOUR FORECAST VALID 0000 UTC FRI AUG 22.
48 HOUR FORECAST VALID 0000 UTC SAT AUG 23.

.WARNINGS.

...ATLC TROPICAL STORM WARNING...
.HURRICANE ERIN N OF AREA NEAR 32.8N 73.1W 942 MB AT 0300 UTC
AUG 21 MOVING N OR 010 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 95
KT GUSTS 115 KT. WITHIN 31N69W TO 31N72W TO 31N76W TO 30N74W TO
29N73W TO 30N71W TO 31N69W SW TO W WINDS 30 TO 40 KT. SEAS 8 TO
11.5 M ELSEWHERE WITHIN 31N66W TO 29N72W TO 31N79W TO 29N77W TO
27N74W TO 27N69W TO 31N66W S TO SW WINDS 25 TO 30 KT. SEAS 5 TO
6.5 M. REMAINDER OF AREA WITHIN 31N62W TO 31N81W TO 27N80W TO
23N74W TO 23N70W TO 25N66W TO 31N62W...INCLUDING ATLC
EXPOSURES...S TO SW WINDS 20 TO 25 KT. SEAS 2.5 TO 4 IN MIXED
SWELL.
.24 HOUR FORECAST HURRICANE ERIN WELL N OF AREA. WITHIN 31N62W
TO 31N72W TO 29N69W TO 29N65W TO 31N62W SW WINDS 20 TO 30 KT.
SEAS 4 TO 5.5 M. ELSEWHERE WITHIN 31N59W TO 29N70W TO 31N81W TO
27N78W TO 26N71W TO 27N64W TO 31N59W WINDS 20 KT OR LESS. SEAS
2.5 TO 4 M IN MIXED SWELL.
.48 HOUR FORECAST WITHIN 31N54W TO 31N79W TO 26N74W TO 25N67W TO
27N60W TO 31N54W WINDS 20 KT OR LESS. SEAS 2.5 TO 4 M IN NW TO N
SWELL...EXCEPT N TO NE SWELL W OF 72W.

.SYNOPSIS AND FORECAST.

.ATLC 36 HOUR FORECAST ATLC AND CARIBBEAN TROPICAL WAVE FROM
22N59W TO 16N62W TO 09N65W. WITHIN 19.5N58W TO 20N61W TO 18N61W
TO 17N60W TO 18N58W TO 19.5N58W E TO SE WINDS 20 TO 25 KT. SEAS
TO 2.5M.
.48 HOUR FORECAST TROPICAL WAVE FROM 22N61W TO 18N64W TO 10N66W.
WITHIN 22N61W TO 20N62W TO 19N61W TO 20N61W TO 22N61W SE TO S
WINDS 20 TO 30 KT. SEAS 2.5 TO 3 M.

.CARIBBEAN WITHIN 14N70W TO 13N74W TO 11N73W TO 12N72W TO 11N71W
TO 12N69W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 14N70W TO 13N74W TO 11N73W TO 12N72W TO
11N71W TO 12N69W TO 14N70W...INCLUDING THE GULF OF VENEZUELA...
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN 45 HOUR FORECAST WITHIN 17N85W TO 17N86W TO 17N87W TO
16N86W TO 16N85W TO 17N85W E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.

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


.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

$$