000
FZNT02 KNHC 212205
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC MON AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON AUG 21.
24 HOUR FORECAST VALID 1800 UTC TUE AUG 22.
48 HOUR FORECAST VALID 1800 UTC WED AUG 23.

.WARNINGS.

...ATLC AND CARIBBEAN TROPICAL STORM WARNING...
.TROPICAL STORM FRANKLIN NEAR 14.3N 70.1W 1002 MB AT 2100 UTC 
AUG 21 MOVING W OR 265 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 45 
KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM NE 
QUADRANT...60 NM SE QUADRANT...0 NM SW QUADRANT...AND 40 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 75 NM NE QUADRANT...0 NM 
SE QUADRANT...30 NM SW QUADRANT...AND 90 NM NW QUADRANT WITH 
SEAS TO 18 FT. ELSEWHERE WITHIN 180 NM NE AND 60 NM SW 
SEMICIRCLES...INCLUDING THE MONA PASSAGE...WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT. ELSEWHERE WITHIN 180 NM NE AND 60 NM SW 
SEMICIRCLES...INCLUDING THE MONA PASSAGE...WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT. 
.24 HOUR FORECAST TROPICAL STORM FRANKLIN NEAR 15.3N 71.3W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 70 NM E SEMICIRCLE AND 30 NM W SEMICIRCLE. SEAS 12 
FT OR GREATER WITHIN 120 NM N AND 60 NM S SEMICIRCLE WITH SEAS 
TO 20 FT. ELSEWHERE WITHIN 180 NM E AND 120 W SEMICIRCLES WINDS 
20 TO 33 KT. SEAS 9 TO 14 FT. ELSEWHERE FROM 13N TO 18N BETWEEN 
68W AND 72W AND FROM 15N TO 18N BETWEEN 72W AND 76W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.  
.48 HOUR FORECAST TROPICAL STORM FRANKLIN INLAND NEAR 19.1N 
70.8W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM 
FORCE WINDS WITHIN 0 NM W SEMICIRCLE...60 NM NE QUADRANT AND 70 
NM SE QUADRANT. SEAS 12 FT OR GREATER OVER FORECAST WATERS 
WITHIN 120 NM N SEMICIRCLE WITH SEAS TO 16 FT. ELSEWHERE OVER 
FORECAST WATERS WITHIN 180 NM E SEMICIRCLE...INCLUDING THE MONA 
PASSAGE...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL STORM FRANKLIN NEAR 22.2N 68.7W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM FRANKLIN NEAR 23.6N 66.0W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST HURRICANE FRANKLIN NEAR 25.6N 65.5W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.

...GULF OF MEXICO TROPICAL STORM WARNING...
.TROPICAL DEPRESSION NINE NEAR 25.2N 91.6W 1008 MB AT 2100 UTC 
AUG 21 MOVING W OR 275 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 30 
KT GUSTS 40 KT. WITHIN 180 NM N SEMICIRCLE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT.  
.12 HOUR FORECAST TROPICAL STORM NINE NEAR 25.8N 94.9W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS 
WITHIN 0 NM S SEMICIRCLE...70 NM NE QUADRANT AND 50 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM N SEMICIRCLE 
WITH SEAS TO 15 FT. ELSEWHERE WITHIN 180 NM N SEMICIRCLE WINDS
20 TO 33 KT. SEAS 8 TO 12 FT.  
.24 HOUR FORECAST TROPICAL STORM NINE INLAND NEAR 26.8N 98.4W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 0 NM S SEMICIRCLE...90 NM NE QUADRANT AND 40 NM NW 
QUADRANT. OVER FORECAST WATERS FROM 26N TO 29N W OF 94W E TO SE 
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW NINE NEAR 28.1N 
101.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WINDS 20 KT 
OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST...REMNANT LOW 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.

.TROPICAL DEPRESSION GERT NEAR 17.1N 57.5W 1008 MB AT 2100 UTC 
AUG 21 MOVING WNW OR 290 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 25 
KT GUSTS 35 KT. WITHIN 180 NM N SEMICIRCLE WINDS 20 TO 25 KT. 
SEAS 8 TO 9 FT   
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW GERT NEAR 17.6N 
58.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 120 NM 
N SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW PRES...REMNANTS OF GERT...NEAR 18.5N 
59.6W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 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.

.LOW PRES...REMNANTS OF EMILY...NEAR 22N42W 1006 MB. WITHIN 390 
NM NE AND 270 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 13 
FT. ELSEWHERE FROM 18N TO 28N BETWEEN 38W AND 49W WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES...REMNANTS OF EMILY...NEAR 23N46W 
1008 MB. WITHIN 180 NM NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT. ELSEWHERE FROM 22N TO 28N BETWEEN 42W AND 50W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW PRES...REMNANTS OF EMILY...NEAR 26N49W 
1009 MB. WITHIN 180 NM NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT. ELSEWHERE FROM 26N TO 29N BETWEEN 44W AND 50W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. 

.42 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
16N35W 1009 MB. FROM 18N TO 21N E OF 37W E WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR  
16N36W 1007 MB. LITTLE CHANGE.

.ATLC AND CARIBBEAN FROM 19N TO 20N BETWEEN 72W AND 
75W...INCLUDING THE WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. 
SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.