FZNT01 KWBC 021022
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1030 UTC SAT SEP 02 2023 

CCODE/2:31:04:01:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 

SECURITE 

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

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS 

SYNOPSIS VALID 0600 UTC SEP 02. 
24 HOUR FORECAST VALID 0600 UTC SEP 03. 
48 HOUR FORECAST VALID 0600 UTC SEP 04. 

.WARNINGS. 

...HURRICANE FORCE WIND WARNING... 
.POST-TROPICAL CYCLONE FRANKLIN NEAR 41N49W 981 MB MOVING NE 20 
KT. WITHIN 120 NM OF CENTER EXCEPT NE QUADRANT WINDS 50 TO 70 
KT. SEAS 24 TO 35 FT. ELSEWHERE WITHIN 180 NM NE AND SW...240 NM 
NW AND SE QUADRANTS WINDS 35 TO 50 KT. SEAS 16 TO 27 FT. ALSO 
WITHIN 360 NM NW AND W...540 NM E AND SE...AND 300 NM S 
QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT. 
.24 HOUR FORECAST POST-TROPICAL CYCLONE FRANKLIN NEAR 46N38W 988 
MB. WITHIN 240 NM OF CENTER EXCEPT NE QUADRANT WINDS 40 TO 55 
KT. SEAS 20 TO 35 FT. ELSEWHERE WITHIN 360 NM OF CENTER 25 TO 40 
KT. SEAS 12 TO 22 FT.  
.48 HOUR FORECAST POST-TROPICAL CYCLONE FRANKLIN E OF AREA NEAR 
49N28W 992 MB. FROM 44N TO 50N E OF 37W WINDS 20 TO 30 KT. SEAS 
8 TO 14 FT. 

...TROPICAL STORM WARNING... 
.POST-TROPICAL CYCLONE IDALIA NEAR 31.7N 64.6W 999 MB AT 0900
UTC SEP 02 MOVING E OR 090 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS
50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM NE
QUADRANT...140 NM SE QUADRANT...160 NM SW QUADRANT...AND 190 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE AND SW
QUADRANTS...420 NM NW QUADRANT AND 240 NM SE QUADRANT WITH SEAS
TO 21 FT. ELSEWHERE EXCEPT WHERE NOTED ABOVE WITH POST-TROPICAL 
FRANKLIN WITHIN 540 NM N SEMICIRCLE...AND 300 NM SE AND 420 NM 
SW QUADRANTS WINDS 20 TO 33 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST TROPICAL STORM IDALIA NEAR 32.1N 62.2W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 180 NM N SEMICIRCLE...80 NM SE QUADRANT AND 120 NM
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 660 NM NE AND 420 NM 
NW QUADRANTS WITH SEAS TO 21 FT. ELSEWHERE FROM 31N TO 38N 
BETWEEN 57W AND 71W...AND FROM 34N TO 40N BETWEEN 57W AND 45W 
WINDS 20 TO 33 KT. SEAS 8 TO 14 FT. 
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 35.7N
58.6W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. LITTLE CHANGE
IN RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR
GREATER. ELSEWHERE FROM 31N TO 42N BETWEEN 52W AND 63W...AND 
FROM 35N TO 42N BETWEEN 57W AND 40W WINDS 20 TO 33 KT. SEAS 8 TO 
14 FT. 
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 40.0N
57.8W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 41.6N
58.6W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 43.5N
59.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

...STORM WARNING... 
.LOW 65N35W 958 MB MOVING NE 10 KT. BETWEEN 120 NM AND 360 NM S 
QUADRANT WINDS 40 TO 55 KT. SEAS 19 TO 34 FT. ELSEWHERE WITHIN 
780 NM S AND SW...AND 600 NM W QUADRANTS WINDS 25 TO 40 KT. SEAS 
10 TO 22 FT. 
.24 HOUR FORECAST LOW JUST E OF AREA 65N33W 969 MB. BETWEEN 240 
NM AND 420 NM SW QUADRANT WINDS 40 TO 55 KT. SEAS 17 TO 31 FT. 
ELSEWHERE N OF 55N WE OF 48W WINDS 25 TO 40 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW E OF THE AREA 65N25W 990 MB. FROM 55N TO 
60N E OF 44W WINDS 25 TO 35 KT. SEAS 8 TO 15 FT. 

...STORM WARNING... 
.POST-TROPICAL CYCLONE JOSE NEAR 44N46W 995 MB MOVING NE 20 KT. 
EXCEPT AS NOTED WITH POST-TROPICAL FRANKLIN ABOVE WITHIN 60 NM 
OF CENTER WINDS 35 TO 50 KT. SEAS 18 TO 24 FT. ELSEWHERE WITHIN 
240 NM N SEMICIRCLES WINDS 25 TO 40 KT. SEAS 10 TO 19 FT. 
.06 HOUR FORECAST...ABSORBED BY POST-TROPICAL FRANKLIN. 

...GALE WARNING...
.24 HOUR FORECAST FROM 50N TO 54N W OF 49W WINDS TO 25 KT. SEAS 
TO 9 FT.
.48 HOUR FORECAST LOW 64N61W 980 MB. WITHIN 240 NM E OF FRONT 
FROM THE LOW TO 62N55W TO 59N60W WINDS 25 TO 40 KT. SEAS 8 TO 13 
FT. ELSEWHERE FROM 48N TO 59N BETWEEN 59W AND 46W WINDS 20 TO 30 
KT. SEAS 8 TO 11 FT. 

...GALE WARNING...
.36 HOUR FORECAST POST-TROPICAL GERT NEAR 31N52W. WITHIN 120 NM 
N SEMICIRLE WINDS 25 TO 33 KT. SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL GERT NEAR 33.4N 51.7W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS
WITHIN 30 NM NE QUADRANT...40 NM SE QUADRANT...20 NM SW
QUADRANT...AND 0 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 
NM NE AND 120 NM SE QUADRANTS WITH SEAS TO 14 FT. ELSEWHERE FROM 
31N TO 33N BETWEEN 54W AND 48W WINDS 20 TO 33 KT. SEAS TO 12 FT. 
.60 HOUR FORECAST...DISSIPATED.

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.  

.DENSE FOG. 48 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM W 
OF A LINE FROM 64N64W TO 58N57W. 

.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 0600 UTC SAT SEP 2.
24 HOUR FORECAST VALID 0600 UTC SUN SEP  3.
48 HOUR FORECAST VALID 0600 UTC MON SEP  4.

.WARNINGS.

...ATLC GALE WARNING...
...ATLC TROPICAL STORM WARNING...
.POST-TROPICAL CYCLONE IDALIA NEAR 31.7N 64.6W 999 MB AT 0900 
UTC SEP 02 MOVING E OR 090 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 
50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 180 NM NE 
QUADRANT...140 NM SE QUADRANT...160 NM SW QUADRANT...AND 190 NM 
NW QUADRANT. WITHIN 31N63W TO 31N68W TO 30N67W TO 30N65W TO 
30N64W TO 31N63W W WINDS 30 TO 45 KT. SEAS 12 TO 21 FT. ELSEWHERE
WITHIN 31N62W TO 30N66W TO 31N68W TO 31N72W TO 27N67W TO 28N63W 
TO 31N62W NW WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. REMAINDER OF 
AREA WITHIN 31N59W TO 29N69W TO 31N72W TO 31N80W TO 25N72W TO 
25N65W TO 31N59W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IDALIA NEAR 32.1N 62.2W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 180 NM N SEMICIRCLE...80 NM SE QUADRANT AND 120 NM 
SW QUADRANT. S OF 31 N...SEAS 12 FT OR GREATER WITHIN 280 NM SW 
QUADRANT AND 180 NM SE QUADRANT WITH SEAS TO 17 FT. ELSEWHERE 
WITHIN 31N58W TO 31N67W TO 29N66W TO 28N63W TO 28N60W TO 31N58W 
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 
29N55W TO 31N68W TO 31N78W TO 27N78W TO 22N69W TO 22N62W TO 
29N55W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 35.7N 
58.6W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM 
FORCE WINDS N OF AREA. WITHIN 31N43W TO 30N77W TO 24N74W TO 
22N69W TO 28N48W TO 31N43W...INCLUDING ATLANTIC EXPOSURES...WINDS
20 KT OR LESS. SEAS 8 TO 11 FT IN N SWELL.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 40.0N 
57.8W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 41.6N 
58.6W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL IDALIA NEAR 43.5N
59.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.

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

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM GERT NEAR 27.7N 54.3W 1003 MB AT 0900 UTC SEP 02
MOVING NE OR 040 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM S 
SEMICIRCLE...20 NM NE QUADRANT AND 0 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 75 NM NE QUADRANT AND 60 NM SE QUADRANT WITH 
SEAS TO 12 FT. WITHIN 29N51W TO 29N52W TO 29N55W TO 27N56W TO 
26N55W TO 26N52W TO 29N51W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM GERT NEAR 29.2N 53.1W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM S SEMICIRCLE...20 NM NE QUADRANT AND 0 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM NE QUADRANT AND 75 
NM SE QUADRANT WITH SEAS TO 13 FT. ELSEWHERE WITHIN 31N51W TO 
31N53W TO 28N54W TO 27N53W TO 27N52W TO 28N50W TO 31N51W WINDS 20
TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL GERT NEAR 33.4N 51.7W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS 
WITHIN 30 NM NE QUADRANT...40 NM SE QUADRANT...20 NM SW 
QUADRANT...AND 0 NM NW QUADRANT. CONDITIONS MERGED WITH AREA 
DESCRIBED WITH IDALIA. 
.60 HOUR FORECAST...DISSIPATED.

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.

.ATLC 48 HOUR FORECAST POST-TROPICAL REMNANT LOW KATIA NEAR 
26.8N 34.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 
31N35W TO 31N40W TO 28N39W TO 27N38W TO 26N35W TO 31N35W WINDS 
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.

.CARIBBEAN WITHIN 14N75W TO 15N80W TO 13N80W TO 11N78W TO 11N74W
TO 12N74W TO 14N75W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.18 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.