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TROPICAL STORM MARCO FORECAST/ADVISORY NUMBER  12
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL142020
0900 UTC SUN AUG 23 2020
 
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
A STORM SURGE WARNING HAS BEEN ISSUED FROM MORGAN CITY LOUISIANA
TO OCEAN SPRINGS MISSISSIPPI.
 
A HURRICANE WARNING HAS BEEN ISSUED FOR THE COAST OF LOUISIANA FROM
MORGAN CITY TO THE MOUTH OF THE PEARL RIVER.
 
A TROPICAL STORM WARNING HAS BEEN ISSUED FOR LOUISIANA FOR LAKE
PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS
 
THE HURRICANE WATCH FROM THE MOUTH OF THE PEARL RIVER TO THE
MISSISSIPPI/ALABAMA BORDER HAS BEEN CHANGED TO A TROPICAL STORM
WARNING.
 
THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED FOR THE PROVINCE
OF PINAR DEL RIO CUBA FOR MARCO.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A STORM SURGE WARNING IS IN EFFECT FOR....
* MORGAN CITY LOUISIANA TO OCEAN SPRINGS MISSISSIPPI
* LAKE BORGNE
 
A HURRICANE WARNING IS IN EFFECT FOR...
* MORGAN CITY LOUISIANA TO THE MOUTH OF THE PEARL RIVER
 
A STORM SURGE WATCH IS IN EFFECT FOR...
* SABINE PASS TO MORGAN CITY LOUISIANA
* OCEAN SPRINGS TO THE ALABAMA/FLORIDA BORDER
* LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND MOBILE BAY
 
A HURRICANE WATCH IS IN EFFECT FOR...
* INTRACOASTAL CITY LOUISIANA TO WEST OF MORGAN CITY
* LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND METROPOLITAN NEW ORLEANS
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* MOUTH OF THE PEARL RIVER TO THE MISSISSIPPI/ALABAMA BORDER
* LAKE PONTCHARTRAIN, LAKE MAUREPAS, AND METROPOLITAN NEW ORLEANS
 
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* MISSISSIPPI/ALABAMA BORDER TO THE ALABAMA/FLORIDA BORDER
 
A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING
INUNDATION...FROM RISING WATER MOVING INLAND FROM THE
COASTLINE...DURING THE NEXT 36 HOURS IN THE INDICATED LOCATIONS.
FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER
SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT
HURRICANES.GOV.  THIS IS A LIFE-THREATENING SITUATION.  PERSONS
LOCATED WITHIN THESE AREAS SHOULD TAKE ALL NECESSARY ACTIONS TO
PROTECT LIFE AND PROPERTY FROM RISING WATER AND THE POTENTIAL FOR
OTHER DANGEROUS CONDITIONS.  PROMPTLY FOLLOW EVACUATION AND OTHER
INSTRUCTIONS FROM LOCAL OFFICIALS.
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA.  A WARNING IS TYPICALLY ISSUED
36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF
TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS.  PREPARATIONS TO PROTECT LIFE
AND PROPERTY SHOULD BE RUSHED TO COMPLETION.
 
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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
 
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
 
TROPICAL STORM CENTER LOCATED NEAR 23.7N  87.0W AT 23/0900Z
POSITION ACCURATE WITHIN  30 NM
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT  11 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  994 MB
MAX SUSTAINED WINDS  60 KT WITH GUSTS TO  75 KT.
50 KT....... 20NE  20SE   0SW  10NW.
34 KT....... 50NE  50SE  10SW  30NW.
12 FT SEAS.. 60NE  30SE   0SW  30NW.
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 23.7N  87.0W AT 23/0900Z
AT 23/0600Z CENTER WAS LOCATED NEAR 23.2N  86.7W
 
FORECAST VALID 23/1800Z 25.3N  87.6W
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 24/0600Z 27.3N  88.6W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 15NE  10SE   0SW  10NW.
50 KT... 30NE  20SE  10SW  20NW.
34 KT... 70NE  50SE  20SW  40NW.
 
FORECAST VALID 24/1800Z 29.0N  89.7W
MAX WIND  65 KT...GUSTS  80 KT.
64 KT... 15NE  10SE   0SW  10NW.
50 KT... 30NE  20SE  10SW  20NW.
34 KT... 70NE  40SE  20SW  40NW.
 
FORECAST VALID 25/0600Z 29.9N  91.5W...INLAND
MAX WIND  45 KT...GUSTS  55 KT.
34 KT... 40NE  20SE  10SW  20NW.
 
FORECAST VALID 25/1800Z 30.5N  93.1W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.
 
FORECAST VALID 26/0600Z 31.0N  95.0W...INLAND
MAX WIND  25 KT...GUSTS  35 KT.
 
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 27/0600Z...DISSIPATED
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.7N  87.0W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 23/1200Z
 
NEXT ADVISORY AT 23/1500Z
 
$$
FORECASTER BLAKE
 
 
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