Officials say that almost all houses in a parish in Louisiana were damaged by Hurricane Ida

An emergency management official said that Hurricane Ida nearly damaged all houses in a parish in Louisiana. It is estimated that the entire power grid in 10 parishes collapsed.

Emergency Management Director Joe Valente told NPR that almost every family in the Jefferson Parish on the outskirts of New Orleans had reported roof damage and low water pressure. The hurricane also damaged a major power transmission tower along the Mississippi River, causing widespread power outages and interruption of river traffic.

“One hundred percent of the power grid was smashed, hundreds of telephone poles were broken, trees hit the wires, and they were torn off,” Valente said. He said that it may take six weeks to fully restore electricity to the parish.

Cynthia Lee Sheng, chairman of Jefferson Diocese, told National Broadcasting Corporation The diocese has not yet responded to at least 200 rescue calls. Emergency officials also worried about the people of Grand Island, where about 40 people stayed, and there has been no news since Sunday afternoon. The island bears the brunt of the hurricane.

For more reports from the Associated Press, please see below.

Hurricane Ida trapped dozens of coastal residents of Louisiana and pleaded for rescue on Monday. At the same time, large areas of the state’s power grid were thrown into chaos during the sweltering late summer heat.

One of the most powerful hurricanes ever hitting the continental United States weakened into a tropical storm overnight, because it pushed the Mississippi inland inland with heavy rains and high winds, and its danger is far from over.

Ada is believed to have caused at least one death—someone was hit by a fallen tree outside Baton Rouge—but its level of fury was still the focus at dawn.

As the hurricane came ashore on the 16th anniversary of Hurricane Katrina, all of New Orleans lost power at sunset on Sunday, leading to uneasy nights of downpour and squalls. The weather got cold shortly before dawn, and people started walking around carefully with flashlights, avoiding fallen light poles, roofs and branches.

The maze of rivers and bays in southern New Orleans, rain and torrential floods threaten hundreds of houses. On social media, people posted their addresses and instructed search and rescue teams to go to their attic or rooftop.

According to data from PowerOutage.US, which tracks power outages across the country, more than 1 million customers in Louisiana and Mississippi lost power, which increased their vulnerability to floods and left them without air conditioning and cooling.

Entergy stated that the only electricity in New Orleans comes from generators, and the city’s emergency office wrote on Twitter, calling it “catastrophic transmission damage.” The city relies on Entergy to provide backup power for its rainwater pumps. After Hurricane Katrina, New Orleans’ flood dikes were significantly improved, but Ada faced the biggest test since the disaster.

There have been no reports of major flooding within the flood control system that protects New Orleans, but the extent of the damage to the entire city is unclear due to communication interruptions and power outages.

Ada’s wind speed of 150 mph (230 km/h) made it the fifth strongest hurricane ever to hit the continent. Earlier Monday, its wind speed dropped to 60 mph (97 km/h), and forecasters said it would weaken quickly while still pouring heavy rain over large areas.

In the southwest corner of Mississippi, the entire neighborhood was surrounded by floods, and many roads were impassable.

The governor of Louisiana, John Bel Edwards, warned the state on Sunday night that it faces a dark day for cleanup without electricity. But he added: “There will always be light after darkness, and I can assure you that we will get through the storm.”