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TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER  10
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL142020
2100 UTC SAT AUG 22 2020
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
A STORM SURGE WATCH HAS BEEN ISSUED FROM SABINE PASS EASTWARD TO
THE ALABAMA/FLORIDA BORDER...INCLUDING LAKE PONTCHARTRAIN...LAKE
MAUREPAS...LAKE BORGNE...AND MOBILE BAY.
 
A HURRICANE WATCH HAS BEEN ISSUED FROM INTRACOASTAL CITY LOUISIANA
EASTWARD TO THE MISSISSIPPI/ALABAMA BORDER...INCLUDING LAKE
PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS.
 
A TROPICAL STORM WATCH HAS BEEN ISSUED FROM THE MISSISSIPPI/ALABAMA
BORDER EASTWARD TO THE ALABAMA/FLORIDA BORDER.
 
THE GOVERNMENT OF MEXICO HAS DISCONTINUED THE TROPICAL STORM
WARNING FOR THE NORTHEASTERN YUCATAN COAST.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A STORM SURGE WATCH IS IN EFFECT FOR...
* SABINE PASS TO THE ALABAMA/FLORIDA BORDER
* LAKE PONTCHARTRAIN...LAKE MAUREPAS...LAKE BORGNE...AND MOBILE BAY
 
A HURRICANE WATCH IS IN EFFECT FOR...
* INTRACOASTAL CITY LOUISIANA TO THE MISSISSIPPI/ALABAMA BORDER
* LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* PROVINCE OF PINAR DEL RIO CUBA
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* MISSISSIPPI/ALABAMA BORDER TO THE ALABAMA/FLORIDA BORDER
 
A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE-
THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE
COASTLINE...IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS.
FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER
SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT
HURRICANES.GOV.
 
A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE
WITHIN THE WATCH AREA.  A WATCH IS TYPICALLY ISSUED 48 HOURS
BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE
WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR
DANGEROUS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
TROPICAL STORM CENTER LOCATED NEAR 21.9N  85.7W AT 22/2100Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT  11 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  992 MB
MAX SUSTAINED WINDS  55 KT WITH GUSTS TO  65 KT.
50 KT....... 20NE  20SE   0SW  10NW.
34 KT....... 50NE  80SE  10SW  40NW.
12 FT SEAS.. 60NE   0SE   0SW   0NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 21.9N  85.7W AT 22/2100Z
AT 22/1800Z CENTER WAS LOCATED NEAR 21.4N  85.5W
 
FORECAST VALID 23/0600Z 23.3N  86.5W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 10NE  10SE   0SW   0NW.
50 KT... 20NE  20SE   0SW  10NW.
34 KT... 60NE  60SE  10SW  40NW.
 
FORECAST VALID 23/1800Z 25.3N  87.3W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 15NE  10SE   0SW  10NW.
50 KT... 30NE  20SE  10SW  20NW.
34 KT... 70NE  50SE  20SW  40NW.
 
FORECAST VALID 24/0600Z 27.5N  88.3W
MAX WIND  75 KT...GUSTS  90 KT.
64 KT... 15NE  10SE   0SW  10NW.
50 KT... 30NE  20SE  10SW  20NW.
34 KT... 70NE  50SE  20SW  40NW.
 
FORECAST VALID 24/1800Z 29.3N  89.6W...ON THE COAST
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 15NE  10SE   0SW  10NW.
50 KT... 30NE  20SE   0SW  20NW.
34 KT... 60NE  40SE  20SW  40NW.
 
FORECAST VALID 25/0600Z 30.4N  91.1W...INLAND
MAX WIND  50 KT...GUSTS  60 KT.
50 KT... 30NE  10SE   0SW   0NW.
34 KT... 50NE  30SE  20SW  30NW.
 
FORECAST VALID 25/1800Z 31.1N  92.7W...INLAND
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 40NE  30SE   0SW  30NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 26/1800Z 32.3N  95.6W...INLAND
MAX WIND  25 KT...GUSTS  35 KT.
 
OUTLOOK VALID 27/1800Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.9N  85.7W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 23/0000Z
 
NEXT ADVISORY AT 23/0300Z
 
$$
FORECASTER BERG
 
 
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