000
FZNT02 KNHC 231009
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SUN AUG 23 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN AUG 23.
24 HOUR FORECAST VALID 0600 UTC MON AUG 24.
48 HOUR FORECAST VALID 0600 UTC TUE AUG 25.

.WARNINGS.

...GULF OF MEXICO HURRICANE WARNING...
.TROPICAL STORM MARCO NEAR 23.7N 87.0W 994 MB AT 0900 UTC AUG 23 
MOVING NNW OR 335 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 60 KT 
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM E 
SEMICIRCLE...10 NM SW QUADRANT AND 30 NM NW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 30 NM NW AND SE QUADRANTS...60 NM NE QUADRANT 
AND 0 NM SW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE WITHIN AREA 
BOUNDED BY 22N85W TO 20N86W TO 22N88W TO 23N88W TO 25N85W TO 
21N85W...INCLUDING THE STRAITS OF FLORIDA AND THE YUCATAN 
CHANNEL...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.12 HOUR FORECAST HURRICANE MARCO NEAR 25.3N 87.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.24 HOUR FORECAST HURRICANE MARCO NEAR 27.3N 88.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...50 NM SE QUADRANT...20 NM SW 
QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
60 NM OF CENTER OF MARCO WITH SEAS TO 29 FT. ELSEWHERE WITHIN 
AREA BOUNDED BY 25N87W TO 25N92W TO 28N92W TO 30N86W TO 27N85W 
TO 25N87W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM MARCO INLAND NEAR 29.9N 91.5W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE 
WINDS WITHIN 20 NM NW AND SE QUADRANTS...40 NM NE QUADRANT AND 
10 NM SW QUADRANT. SEAS LESS THAN 12 FT. N OF 29N BETWEEN 88W 
AND 90W SE TO S WINDS 20 TO 25 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST TROPICAL DEPRESSION MARCO INLAND NEAR 31.0N 
95.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

...ATLC TROPICAL STORM WARNING...
.TROPICAL STORM LAURA NEAR 18.8N 70.9W 1005 MB AT 0900 UTC AUG 
23 MOVING WNW OR 285 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM E 
SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 
210 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 18 FT 
NEAR 20N 69W. ELSEWHERE WITHIN AREA BOUNDED BY 18N64W TO 17N67W 
TO 23N72W TO 24N66W TO 23N64W TO 18N64W...INCLUDING THE MONA 
PASSAGE...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM LAURA INLAND EASTERN CUBA NEAR 
20.9N 77.5W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL 
STORM FORCE WINDS WITHIN 80 NM NW AND SE QUADRANTS...120 NM NE 
QUADRANT AND 0 NM SW QUADRANT. SEAS 12 FT OR GREATER OVER WATERS 
OUTSIDE BAHAMAS WITHIN 60 NM NW AND SE QUADRANTS...210 NM NE 
QUADRANT AND 0 NM SW QUADRANT WITH SEAS TO 18 FT NEAR 22N77W. 
ELSEWHERE WITHIN AREA BOUNDED BY 22N70W TO 18N75W TO 23N79W TO 
28N78W TO 28N72W TO 22N70W...INCLUDING THE WINDWARD PASSAGE... 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT EXCEPT LESS THAN 8 FT 
WINDWARD PASSAGE.
.48 HOUR FORECAST TROPICAL STORM LAURA OVER SE GULF OF MEXICO 
NEAR 23.5N 84.2W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. 
LITTLE CHANGE IN RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 
12 FT OR GREATER WITH SEAS TO 25 FT NEAR CENTER OF LAURA. 
ELSEWHERE WITHIN AREA BOUNDED BY 23N81W TO 23N85W TO 27N85W TO 
25N82W TO 25N80W TO 23N81W...INCLUDING THE STRAITS OF FLORIDA
...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.72 HOUR FORECAST HURRICANE LAURA NEAR 26.4N 89.4W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE LAURA INLAND NEAR 29.9N 92.5W. 
MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT.
.120 HOUR FORECAST TROPICAL DEPRESSION LAURA INLAND NEAR 35.0N 
91.4W. 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.

.SYNOPSIS AND FORECAST.

.ATLC 48 HOUR FORECAST WITHIN AREA BOUNDED BY 28N35W TO 20N35W 
TO 21N37W TO 23N37W TO 28N35W WINDS 20 KT OR LESS. SEAS 8 FT IN 
NE SWELL.

.CARIBBEAN 36 HOUR FORECAST WITHIN 19N78W TO 20N81W TO 22N80W TO 
22N79W TO 21N78W TO 19N78W SE TO S WINDS 20 TO 25 KT. SEAS TO 8 
FT.
.48 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.