Hurricane Nate makes second landfall near Biloxi, Miss.

A radar image shows Hurricane Nate after making its second landfall near Biloxi, Miss. (SBG)

Hurricane Nate made its second landfall around 12:30 a.m. CT on Sunday near Biloxi, Mississippi, bringing with it heavy rains and powerful floods.

Nate first crossed over land at the mouth of the Mississippi River earlier in the night as a Category 1 storm. Although officials in Alabama had warned that it could reach them as a Category 2, they emphasized that the weaker storm still posed serious risks with maximum sustained winds of 85 mph.

Governors in Alabama, Louisiana, and Mississippi declared states of emergency earlier in the day and urged residents to heed warnings from authorities.

A curfew was imposed in New Orleans around 7 p.m., but it was lifted later in the night when there appeared to be little impact from the storm. Mayor Mitch Landrieu still asked people to shelter in place.

Video posted on Twitter by weather photographer Mike Theiss before the eye passed over Biloxi showed flooding inside the Golden Nugget Casino due to the rising storm surge.

Cities along the Mississippi coast such as Gulfport and Biloxi were on high alert. Some beachfront hotels and casinos were evacuated, and rain began falling on the region Saturday. Forecasters called for 3 to 6 inches (7 to 15 centimeters) with as much as 10 inches (25 centimeters) in some isolated places.

Storm surge threatened low-lying communities in southeast Louisiana, eastward to the Alabama fishing village of Bayou la Batre.

"If it floods again, this will be it," said Larry Bertron as said as he and his wife prepared to leave their home in the Braithwaite community of vulnerable Plaquemines Parish. The hurricane veterans lost one home to Hurricane Katrina in 2005 and left the home they rebuilt after Hurricane Isaac in 2012.

With Nate marching to a second landfall on the Mississippi Gulf Coast, gauges showed tides are 4 feet above normal from Shell Beach, Louisiana, east of New Orleans, to Bayou La Batre, Alabama, southwest of Mobile. In Mississippi, Hancock County Emergency Management Director Brian Adam said his agency received reports of rising water on low-lying streets facing the Mississippi Sound and the Bay of St. Louis. In Biloxi, authorities reported water from Biloxi Bay rising on some streets.

Parts of northwest Florida were also coping with evacuation orders and tornado warnings as the storm loomed off the coast.

At 8 p.m. EDT Saturday, Nate was about 10 miles (16 kilometers) southwest of the mouth of the Mississippi River. The storm was expected to quickly weaken as it cuts a path through the Southeast on its way to the Mid-Atlantic and Northeast regions, which could see impacts from Nate early next week.

Nate killed at least 21 people when it tore through Central America.

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