000
FZNT02 KNHC 292117
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC TUE AUG 29 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 1800 UTC TUE AUG 29.
24 HOUR FORECAST VALID 1800 UTC WED AUG 30.
48 HOUR FORECAST VALID 1800 UTC THU AUG 31.

.WARNINGS.

...ATLC HURRICANE WARNING...
.HURRICANE FRANKLIN JUST N OF AREA NEAR 31.4N 69.9W 947 MB AT 
2100 UTC AUG 29 MOVING NE OR 040 DEG AT 10 KT. MAXIMUM SUSTAINED 
WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 130 
NM NE QUADRANT...120 NM SE QUADRANT...80 NM SW QUADRANT...AND 90 
NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM E 
SEMICIRCLE...120 NM SW QUADRANT AND 210 NM NW QUADRANT WITH SEAS 
WITH SEAS TO 40 FT. ELSEWHERE OVER FORECAST WATERS WITHIN 240 NM 
SE AND 180 NM SW QUADRANTS WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. 
REMAINDER OF THE AREA N OF 27N BETWEEN 64W AND 79W WINDS 20 KT 
OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. SEE PART 1.
.24 HOUR FORECAST HURRICANE FRANKLIN N OF AREA NEAR 34.3N 66.5W. 
MAXIMUM SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM 
FORCE WINDS WITHIN 130 NM E SEMICIRCLE...110 NM SW QUADRANT AND 
90 NM NW QUADRANT. ELSEWHERE OVER FORECAST WATERS N OF 30N 
BETWEEN 64W AND 70W SW TO W WINDS 20 TO 30 KT. SEAS 10 TO 14 FT. 
REMAINDER OF THE AREA N OF 27N BETWEEN 61W AND 71W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. SEE PART 1.
.48 HOUR FORECAST HURRICANE FRANKLIN WELL N OF AREA NEAR 36.6N 
59.8W. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL 
STORM FORCE WINDS WITHIN 140 NM S SEMICIRCLE...130 NM NE 
QUADRANT AND 90 NM NW QUADRANT. ELSEWHERE OVER FORECAST WATERS N 
OF 28N BETWEEN 55W AND 65W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN NW SWELL. SEE PART 1.
.72 HOUR FORECAST HURRICANE FRANKLIN NEAR 41.3N 50.6W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR 
40.6N 50.2W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FRANKLIN NEAR 
46.0N 40.2W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST...DISSIPATED.

... ATLANTIC TROPICAL STORM WARNING...
.TROPICAL DEPRESSION ELEVEN NEAR 28.2N 51.8W 1014 MB AT 2100 UTC 
AUG 29 MOVING NNW OR 345 DEG AT 2 KT. MAXIMUM SUSTAINED WINDS 30 
KT GUSTS 40 KT. WITHIN 90 NM E SEMICIRCLE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT.  
.24 HOUR FORECAST TROPICAL STORM ELEVEN NEAR 29.4N 52.5W.
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 45 NM E SEMICIRCLE WITH SEAS TO 14 FT. 
ELSEWHERE WITHIN 60 NM E AND 30 NM W SEMICIRCLES WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST TROPICAL DEPRESSION ELEVEN NEAR 32.0N 52.4W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 60 NM E 
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
.60 HOUR FORECAST TROPICAL DEPRESSION ELEVEN NEAR 34.0N 51.6W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.72 HOUR FORECAST...DISSIPATED.

...GULF OF MEXICO HURRICANE WARNING...
.HURRICANE IDALIA NEAR 26.1N 84.8W 970 MB AT 2100 UTC AUG 29 
MOVING N OR 360 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 85 KT 
GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE 
QUADRANT...140 NM SE QUADRANT...50 NM SW QUADRANT...AND 60 NM NW 
QUADRANT.  SEAS 12 FT OR GREATER WITHIN 90 NM W SEMICIRCLE...150 
NM NE QUADRANT AND 120 NM SE QUADRANT WITH SEAS TO 24 FT. 
ELSEWHERE WITHIN 180 NM E AND 120 NM W SEMICIRCLES WINDS 20 TO 
33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE IDALIA NEAR 31.0N 82.9W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...170 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER 
FORECAST WATERS WITHIN 180 NM SE AND NW QUADRANTS AND WITHIN 90 
NM SW AND 60 NM NE QUADRANTS WITH SEAS TO 26 FT. ELSEWHERE N OF 
23N BETWEEN 80W AND 88W...INCLUDING THE YUCATAN CHANNEL...WINDS 
20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA N OF 26N BETWEEN 
88W AND AND 91W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.36 HOUR FORECAST TROPICAL STORM IDALIA INLAND NEAR 32.9N 80.2W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.48 HOUR FORECAST TROPICAL STORM IDALIA OVER WATER NEAR 33.9N 
77.1W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM 
FORCE WINDS WITHIN 110 NM NE QUADRANT...100 NM SE QUADRANT...80 
NM SW QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 210 NM SE SEMICIRCLE. OVER FORECAST N OF 28N BETWEEN 74W 
AND 81W SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IDALIA NEAR 33.3N 71.8W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IDALIA NEAR 32.3N 69.6W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM IDALIA NEAR 31.7N 69.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

.HURRICANE IDALIA NEAR 24.5N 84.7W 977 MB AT 1500 UTC AUG 29 
MOVING N OR 05 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 
85 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE QUADRANT... 
140 NM SE QUADRANT...50 NM SW QUADRANT...AND 60 NM NW QUADRANT. 
SEAS 12 FT OR GREATER WITHIN 90 NM NE QUADRANT...150 NM SE 
QUADRANT...60 NM SW QUADRANT...AND 75 NM NW QUADRANT WITH SEAS 
TO 24 FT. ELSEWHERE WITHIN 180 NM NE AND 240 NM SE QUADRANTS AND 
90 NM W SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST HURRICANE IDALIA NEAR 29.3N 83.7W. MAXIMUM 
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM W SEMICIRCLE...90 NM NE QUADRANT AND 150 NM SE 
QUADRANT. OVER FORECAST WATERS SEAS 12 FT OR GREATER WITHIN 120 
NM SE QUADRANT. ELSEWHERE N OF 25N E OF 86W WINDS 20 TO 33 KT. 
SEAS 9 TO 12 FT. REMAINDER OF AREA N OF 26N BETWEEN 86W AND 90W 
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM IDALIA INLAND NEAR 31.8N 81.7W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.48 HOUR FORECAST TROPICAL STORM IDALIA OVER WATER N OF AREA 
NEAR 33.5N 78.8W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. 
TROPICAL STORM FORCE WINDS WITHIN 70 NM NE AND SW QUADRANTS...40 
NM NW QUADRANT AND 120 NM SE QUADRANT. SEAS 12 FT OR GREATER 
WITHIN 240 NM SE SEMICIRCLE. OVER FORECAST N OF 28N BETWEEN 72W 
AND 80W SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM IDALIA NEAR 33.8N 73.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IDALIA NEAR 32.5N 70.2W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM IDALIA NEAR 32.0N 68.8W.
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.

.ATLANTIC 18 HOUR FORECAST HURRICANE IDALIA OVER THE NE GULF OF 
MEXICO. N OF 25N W OF 79W S WINDS 20 TO 25 KT. SEAS BUILDING TO 
8 FT.
.24 HOUR FORECAST HURRICANE IDALIA OVER THE NE GULF OF MEXICO. N 
OF 26N W OF 77W S WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST TROPICAL STORM IDALIA N OF AREA. CONDITIONS 
MERGED. SEE WARNING SECTION.

.CARIBBEAN N OF 20N BETWEEN 81W AND 85W S WINDS 20 TO 25 KT. 
SEAS 8 FT. 
.12 HOUR FORECAST FROM 11N TO 15N BETWEEN 70W AND 77W... 
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. 
SEAS 8 FT W OF 72W.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST FROM 11N TO 15N BETWEEN 68W AND 78W... 
INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. 
SEAS 8 FT NEAR THE COAST OF COLOMBIA. FROM 15N TO 17.5N BETWEEN 
70W AND 76W E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.