579 
FZNT02 KNHC 060923
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI SEP 6 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FRI SEP 6.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 7.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 8.

.WARNINGS.

...TROPICAL STORM WARNING...
.POST-TROPICAL CYCLONE GABRIELLE NEAR 25.5N 37.6W 1004 MB AT 
0900 UTC SEP 06 MOVING NW OR 315 DEG AT 10 KT. MAXIMUM SUSTAINED 
WINDS 35 KT GUSTS 45 KT. GALE FORCE WINDS WITHIN 180 NM NE...0 
NM SE...80 NM SW AND 150 NM NW QUADRANTS. SEAS 12 FT OR GREATER 
WITHIN 150 NM OF CENTER EXCEPT 75 NM SE QUADRANT WITH SEAS TO 16 
FT. ELSEWHERE WITHIN 240 NM OF CENTER EXCEPT 90 NM SE QUADRANT 
WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER AREA FROM 21N TO 
29N E OF 42W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW GABRIELLE NEAR 27.1N 
39.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 240 NM 
OF CENTER EXCEPT 90 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 10 TO 
15 FT. REMAINDER AREA FROM 22N TO 30N E OF 43W WINDS 20 KT OR 
LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW GABRIELLE NEAR 29.2N 
41.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 210 NM 
OF CENTER EXCEPT 90 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS 10 TO 
15 FT. REMAINDER AREA N OF 24N TO 30N E OF 45W WINDS 20 KT OR 
LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM GABRIELLE NEAR 30.7N 44.8W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 120 NM NE...50 NM SE...50 NM SW AND 100 NM NW 
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER EXCEPT 
75 NM SE QUADRANT WITH SEAS TO 16 FT. ELSEWHERE WITHIN 210 NM OF 
CENTER EXCEPT 120 NM SE QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 13 
FT. REMAINDER AREA N OF 26N TO 30N E OF 47W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM GABRIELLE N OF AREA NEAR 31.9N 
47.4W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM 
FORCE WINDS WITHIN 50 NM S SEMICIRCLE...120 NM NE QUADRANT AND 
100 NM NW QUADRANT. OVER FORECAST WATERS SEAS 12 FT OR GREATER 
WITHIN 150 NM S SEMICIRCLE WITH SEAS TO 15 FT. ELSEWHERE WITHIN 
120 NM SE SEMICIRCLE WINDS 20 TO 33 KT. SEAS 10 TO 15 FT. 
REMAINDER AREA N OF 28N BETWEEN 40W AND 50W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM GABRIELLE N OF AREA NEAR 35.6N 
48.6W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GABRIELLE NEAR 40.4N 44.3W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL LOW GABRIELLE 
NEAR 47.0N 34.5W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 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.

.ATLC HURRICANE DORIAN N OF AREA. OVER FORECAST WATERS N OF 29N 
BETWEEN 72W AND 80W S TO SW WINDS 20 TO 30 KT. SEAS 11 TO 16 FT. 
ELSEWHERE N OF 26N BETWEEN 69W AND 80W WINDS 20 KT OR LESS. SEAS 
8 TO 13 FT IN W TO NW SWELL. 
.24 HOUR FORECAST OVER FORECAST WATERS N OF 29N BETWEEN 65W AND 
75W W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN W TO NW SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 56W AND 69W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN NW SWELL.

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.