FZNT01 KWBC 010421
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
0430 UTC FRI SEP 01 2023 

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 

SECURITE 

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W 

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS 

SYNOPSIS VALID 0000 UTC SEP 01. 
24 HOUR FORECAST VALID 0000 UTC SEP 02. 
48 HOUR FORECAST VALID 0000 UTC SEP 03. 

.WARNINGS. 

...HURRICANE WARNING... 
.HURRICANE FRANKLIN NEAR 36.8N 58.6W 979 MB AT 0300 UTC SEP 01
MOVING ENE OR 060 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM S
SEMICIRCLE...120 NM NE QUADRANT AND 80 NM NW QUADRANT. SEAS 12
FT OR GREATER WITHIN 360 NM NE QUADRANT...240 NM SE
QUADRANT...210 NM SW QUADRANT...AND 310 NM NW QUADRANT WITH SEAS
TO 38 FT. ELSEWHERE FROM 31N TO 38N BETWEEN 54W AND 65W WINDS 20 
TO 33 KT. SEAS TO 12 FT.
.24 HOUR FORECAST HURRICANE FRANKLIN NEAR 40.0N 51.9W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN 150 NM NE AND SW QUADRANTS...180 NM NW QUADRANT AND 160
NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE...210 NM 
SE...220 NM SW...AND 310 NM NW QUADRANTS WITH SEAS TO 39 FT. 
ELSEWHERE FROM 32N TO 39N BETWEEN 50W AND 63W WINDS 20 TO 33 KT. 
SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR
44.3N 43.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL
STORM FORCE WINDS WITHIN 200 NM OF CENTER EXCEPT 170 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM OF CENTER...EXCEPT 
420 NM SW QUADRANT WITH SEAS TO 32 FT. ELSEWHERE FROM 38N TO 50N 
BETWEEN 35W AND 53W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR
47.3N 36.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR
50.1N 30.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR
53.2N 25.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOSE NEAR 32.7N 52.4W 1002 MB AT 0300 UTC SEP 01
MOVING N OR 355 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM E
SEMICIRCLE...30 NM SW QUADRANT AND 0 NM NW QUADRANT. ELSEWHERE 
WITHIN 120 NM NE QUADRANT WINDS 20 TO 33 KT. SEAS TO 11 FT. 
.24 HOUR FORECAST TROPICAL STORM JOSE NEAR 39.9N 51.1W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 40 NM E SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 12 FT OR 
GREATER WITHIN 90 NM E SEMICIRCLE WITH SEAS TO 14 FT. ELSEWHERE 
FROM 34N TO 40N BETWEEN 46W AND 52W WINDS 20 TO 33 KT. SEAS TO 
12 FT. 
.36 HOUR FORECAST...DISSIPATED.

...STORM WARNING...
.POST-TROPICAL CYCLONE IDALIA NEAR 33.1N 71.5W 996 MB AT 0300
UTC SEP 01 MOVING E OR 095 DEG AT 20 KT. MAXIMUM SUSTAINED WINDS
55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM N
SEMICIRCLE AND 180 NM S SEMICIRCLE. SEAS 12 FT OR GREATER
WITHIN 240 NM S SEMICIRCLE...210 NM NE QUADRANT AND 270 NM NW
QUADRANT WITH SEAS TO 27 FT. ELSEWHERE FROM 31N TO 40N W OF 68W 
WINDS 20 TO 33 KT. SEAS TO 12 FT.
.12 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 32.3N
69.1W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 31.1N
67.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM
FORCE WINDS WITHIN 180 NM NE QUADRANT...0 NM SE QUADRANT...120
NM SW QUADRANT...AND 150 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 240 NM NE...240 NM SE...300 NM SW...AND 330 NM NW 
QUADRANTS WITH SEAS TO 22 FT. ELSEWHERE FROM 31N TO 41N BETWEEN 
62W AND 76W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.48 HOUR FORECAST EXTRATROPICAL LOW IDALIA TROPICAL CYCLONE NEAR
31.3N 64.5W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL
STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...130 NM NE QUADRANT
AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM N 
SEMICIRCLE WITH SEAS TO 17 FT. ELSEWHERE FROM 31N TO 38N BETWEEN 
51W AND 75W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.72 HOUR FORECAST EXTRATROPICAL LOW IDALIA NEAR 34.3N 61.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST EXTRATROPICAL LOW IDALIA NEAR 36.8N 59.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW IDALIA POST-TROP/EXTRATROP
NEAR 38.7N 61.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

...STORM WARNING... 
.LOW 54N50W 967 MB MOVING NE 25 KT. WITHIN 300 NM S 
SEMICIRCLE...WITHIN 240 NM NW OF A FRONT FROM THE LOW TO 57N48W 
TO 57N42W...AND BETWEEN 300 NM AND 540 NM E QUADRANT WINDS 40 TO 
55 KT. SEAS 15 TO 24 FT. ELSEWHERE WITHIN 780 NM NE...660 NM 
SE...300 NM SW AND 420 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 
10 TO 18 FT.
.24 HOUR FORECAST LOW 63N35W 957 MB. WITHIN 420 NM SW QUADRANT 
WINDS 35 TO 50 KT. SEAS 20 TO 34 FT. ELSEWHERE WITHIN 780 NM SW 
AND W QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 22 FT. 
.48 HOUR FORECAST LOW JUST E OF THE AREA NEAR 65N34W 968 MB. 
WITHIN 480 NM SW QUADRANT WINDS 40 TO 55 KT. SEAS 18 TO 32 FT. 
ELSEWHERE N OF A LINE FROM 56N50W TO 53N44W TO 53N35W WINDS 25 
TO 40 KT. SEAS 12 TO 20 FT. 

.SYNOPSIS AND FORECAST. 

.LOW 65N59W 998 MB DRIFTING N. WINDS LESS THAN 25 KT. SEAS LESS 
THAN 8 FT. 
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW 
63N35W ABOVE. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 360 NM E OF 
A LINE FROM 55N50W TO 44N54W. 
.24 HOUR FORECAST DENSE FOG N OF 63N E OF GREENLAND. 
.48 HOUR FORECAST CONDITIONS IMPROVED. 

.FORECASTER MUSONDA. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 0000 UTC FRI SEP 1.
24 HOUR FORECAST VALID 0000 UTC SAT SEP  2.
48 HOUR FORECAST VALID 0000 UTC SUN SEP  3.

.WARNINGS.

...ATLC GALE WARNING...
.POST-TROPICAL CYCLONE IDALIA NEAR 33.1N 71.5W 996 MB AT 0300 
UTC SEP 01 MOVING E OR 095 DEG AT 20 KT. MAXIMUM SUSTAINED WINDS 
55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM N 
SEMICIRCLE AND 180 NM S SEMICIRCLE. WITHIN 31N68.5W TO 31N75W TO 
31N74.5W TO 31N68.5W SW TO W WINDS 30 TO 40 KT. SEAS 12 TO 19 FT.
ELSEWHERE WITHIN 31N68W TO 30N73W TO 31N77W TO 29N74W TO 29N72W 
TO 30N69W TO 31N68W SW TO W WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 30N70W TO 31N77W TO 30N77W TO 28N74W TO 
29N74W TO 28N72W TO 30N70W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 32.3N 
69.1W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.24 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 31.1N 
67.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM 
FORCE WINDS WITHIN 180 NM NE QUADRANT...0 NM SE QUADRANT...120 NM
SW QUADRANT...AND 150 NM NW QUADRANT. WITHIN 31N66W TO 31N69.5W 
TO 30.5N69W TO 30N67.5W TO 31N66W W TO NW WINDS 30 TO 40 KT. SEAS
12 TO 17 FT. ELSEWHERE WITHIN 31N65W TO 30N69W TO 31N70W TO 
31N75W TO 28N73W TO 28N67W TO 31N65W NW WINDS 20 TO 30 KT. SEAS 
10 TO 12 FT. REMAINDER OF AREA WITHIN 31N61W TO 31N80W TO 27N78W 
TO 28N72W TO 26N69W TO 28N63W TO 31N61W...INCLUDING ATLANTIC 
EXPOSURES...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST EXTRATROPICAL LOW IDALIA TROPICAL CYCLONE NEAR
31.3N 64.5W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL
STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...130 NM NE QUADRANT 
AND 100 NM NW QUADRANT. WITHIN 31N62W TO 31N74W TO 28N74W TO 
28N66W TO 31N62W NW WINDS 20 TO 30 KT. SEAS 12 TO 15 FT. 
REMAINDER OF AREA WITHIN 31N45W TO 29N63W TO 28N65W TO 30N78W TO 
24N76W TO 23N71W TO 31N45W...INCLUDING ATLANTIC EXPOSURES...WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST EXTRATROPICAL LOW IDALIA NEAR 34.3N 61.0W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST EXTRATROPICAL LOW IDALIA NEAR 36.8N 59.0W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST EXTRATROPICAL LOW IDALIA POST-TROP/EXTRATROP 
NEAR 38.7N 61.0W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

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

.SYNOPSIS AND FORECAST.

.TROPICAL STORM JOSE NEAR 32.7N 52.4W 1002 MB AT 0300 UTC SEP 01
MOVING N OR 355 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS N OF AREA. WITHIN 31N50W
TO 31N54W TO 30.5N53.5W TO 30N52W TO 30N51W TO 31N50W WINDS 20 
KT OR LESS. SEAS 8 TO 12 FT IN SW TO W SWELL.
.24 HOUR FORECAST TROPICAL STORM JOSE NEAR 39.9N 51.1W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS N 
OF AREA. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 
8 FT.

.HURRICANE FRANKLIN NEAR 36.8N 58.6W 979 MB AT 0300 UTC SEP 01
MOVING ENE OR 060 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 75 KT
GUSTS 90 KT. TROPICAL STORM FORCE WINDS N OF AREA. WITHIN 31N55W
TO 31N63W TO 30N62W TO 30N56W TO 31N55W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST HURRICANE FRANKLIN NEAR 40.0N 51.9W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS N 
OF AREA. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 
8 FT.

.CARIBBEAN WITHIN 14N68W TO 14N69W TO 15N74W TO 13N76W TO 11N73W
TO 11N68W TO 14N68W...INCLUDING THE GULF OF VENEZUELA...E WINDS 
20 TO 30 KT. SEAS 8 FT.
.24 HOUR FORECAST WITHIN 14N70W TO 15N79W TO 13N79W TO 11N75W TO
11N71W TO 12N68W TO 14N70W...INCLUDING THE GULF OF 
VENEZUELA...NE TO E WINDS 20 TO 30 KT. SEAS 8 FT.
.48 HOUR FORECAST WITHIN 13N71W TO 13N73W TO 11N73W TO 12N72W TO
11N72W TO 12N71W TO 13N71W NE TO E WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.