MIAMI, Florida – NOAA’s National Hurricane Center issued a Public Advisory at 11 a.m. Eastern Daylight Time on Sunday, August 23, 2020, due to the presence of Tropical Storm Marco (formerly Invest 97L and Tropical Depression 14) that is tracking toward Louisiana.
Tropical Storm Marco is located about 325 miles south-southeast from the mouth of the Mississippi River and is moving to the north-northwest at 14 mph (22 km/h).
NHC forecasters say that this motion is expected to continue through tonight, followed by a turn to the northwest by Monday.
On the official NHC forecast track, Marco will cross the central Gulf of Mexico today and will approach southeastern Louisiana on Monday.
A gradual turn toward the west-northwest with a decrease in forward speed is expected after Marco moves inland.
Computer models are in general agreement that Marco will track in a north-northwesterly direction over the next 24 hours.
However, the models are in wide disagreement after 24 hours which results in a landfall spread between the spaghetti models that stretches from Texas to Florida.
Tropical Storm Marco has maximum sustained winds of 70 mph (110 km/h), with higher gusts.
Tropical-storm-force winds extend outward up to 60 miles (95 km) from the center of the tropical cyclone.
Some strengthening is anticipated and Marco is forecast to become a hurricane today. Marco is expected to be a hurricane when it approaches the northern Gulf Coast on Monday.
Rapid weakening is expected after Marco moves inland.
A Storm Surge Warning is in effect from Morgan City, Louisiana to Ocean Springs, Mississippi, and Lake Borgne.
A Hurricane Warning is in effect from Morgan City, Louisiana to the mouth of the Pearl River.
A Storm Surge Watch is in effect from Sabine Pass to Morgan City, Louisiana; Ocean Springs, Mississippi to the Alabama/Mississippi border; Lake Pontchartrain and Lake Maurepas.
A Hurricane Watch is in effect from Intracoastal City, Louisiana to west of Morgan City; Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans.
A Tropical Storm Warning is in effect from the 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 from the Mississippi/Alabama border to the Alabama/Florida border.
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