As of 8 a.m. EDT, Nate was centered about 95 miles (155 kilometers) west-southwest of Montgomery, Alabama, with maximum sustained winds of 45 mph (75 kph).
As of Sunday morning the National Hurricane Center has lowered Nate's intensity to a strong tropical storm.
US President Donald Trump had earlier issued an emergency declaration for Louisiana, allowing the state to seek federal help with preparation and possible relief efforts. It was downgraded to a tropical storm warning and New Orleans Mayor Mitch Landrieu lifted a citywide curfew. Saturday night, the storm came ashore along a sparsely populated area in southeast Louisiana. With the storm already beginning to hit the coast, it is too late for people to evacuate if they haven't yet. Forecasters said it was likely to reach the U.S. Gulf Coast as a hurricane over the weekend. Flash flooding is a danger. Hurricane Maria wiped through the island of Puerto Rico two weeks ago, yet thousands of people are still without electricity, water or basic necessities.
The storm doused Central America with heavy rains on Thursday, killing at least 16 people in Nicaragua, 10 in Costa Rica, two in Honduras and two in El Salvador.
Landrieu ordered a mandatory evacuation for the communities of Venetian Isles, Lake Catherine and Irish Bayou.
The first floor of the parking lot of the Palace Casino also had flooding Saturday night. At least 1,800 workers were on standby to reconnect power, if needed, he said.
"We are extremely fortunate there has been no loss of life due to the storm", Bryant said, giving credit to emergency management officials and residents who heeded their warnings. It has also shut down most oil and gas production in the Gulf. "New Orleans was very fortunate during this weather event".
Gov. John Bel Edwards declared a state of emergency for all of Louisiana and mobilized 1,300 National Guard troops ahead of the storm.
The forecast warned that "the combination of a unsafe storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline". "It looks like the beach took a pounding from the surge".
Gilich said he hopes Nate's direction and predicted speed "ease the blow". In Alabama, there are reported to be 82,000 customers without power.
When the storm hit Biloxi, it caused flooding and power outages.
People in the Southern American states of Mississippi, Alabama, Florida and Louisiana are being moved to safer areas.
Stay up to date with the latest on Nate by downloading the WMBF First Alert Weather App.
"Thankfully, right now we have no major damage reports", he said.
It was Nate's second landfall. Biloxi's gambling casinos closed early on Saturday.
Strong winds Sunday night and Monday AM.
Meanwhile in MS, the Air Force Reserve's 403rd Wing relocated their aircraft to Texas and Arkansas.
The city did not expect major rainfall totals, in part because Nate was tracking east of the city.