Almost 800 rescued in St. John the Baptist Parish after Hurricane Ida

At least three people have died as a result of the storm.

ByJulia Jacobo, Emily Shapiro, Ivan Pereira, Morgan Winsor, and Bill Hutchinson
Last Updated: August 31, 2021, 8:36 AM EDT

Ida is barreling through Louisiana after making landfall in the state as a powerful Category 4 hurricane on Sunday afternoon.

It was one of the strongest hurricanes on record -- by both wind speed and pressure -- to roar ashore in Louisiana.

Ida, now a tropical storm, is hitting on the 16-year anniversary of Katrina, a Category 3 hurricane that ravaged the Gulf Coast. Hurricane Katrina unleashed a series of events, taking the lives of more than 1,800 people and leaving more than $100 billion worth of damage in its wake.

Latest headlines:

Here are the latest developments. All times Eastern.
Aug 29, 2021, 10:33 PM EDT

Power won't be restored to New Orleans Sunday night

Hurricane Ida has knocked out all eight transmission lines in the New Orleans area, Entergy said. Power will not be restored Sunday night, the energy company said.

Ida, one of the strongest hurricanes to ever make landfall in Louisiana by both wind and pressure, weakened to a Category 2 hurricane at about 10 p.m. ET.

PHOTO: NEW ORLEANS, LOUISIANA - AUGUST 29: A person crosses the street during Hurricane Ida on August 29, 2021 in New Orleans, Louisiana. The hurricane made landfall earlier today and continues to cut across Louisiana.
NEW ORLEANS, LOUISIANA - AUGUST 29: A person crosses the street during Hurricane Ida on August 29, 2021 in New Orleans, Louisiana. The hurricane made landfall earlier today and continues to cut across Louisiana. Hurricane Ida has been classified as a Category 4 storm with winds of 150 mph.
Brandon Bell/Getty Images

One of the highest wind gusts recorded was 138 mph in Dulac, Louisiana, located in Terrebonne Parish.

The storm surge has climbed over 6 feet in some areas and flash flood emergencies remain in effect.

-ABC News' Melissa Griffin

Aug 29, 2021, 9:25 PM EDT

More than 800,000 without power in Louisiana, Mississippi

More than 789,000 customers in Louisiana are without power as of 9 p.m. ET. In Mississippi, more than 16,000 have lost power.

Flash flooding is ongoing in the New Orleans area where there's already been 4 to 7 inches of rain.

Aug 29, 2021, 9:14 PM EDT

New Orleans loses power

All of New Orleans has lost power as Hurricane Ida pounds Louisiana.

Power in the city is only coming from generators, according to New Orleans’ Office of Homeland Security and Emergency Preparedness.

Pumps are operating using self-generating sources of power.

PHOTO: Rain batters downtown New Orleans, Louisiana on August 29, 2021 after Hurricane Ida made landfall in Port Fourchon, 100 miles (160 km) south of New Orleans at 1655 GMT, packing maximum sustained winds estimated at 150 miles per hour.
Rain batters downtown New Orleans, Louisiana on August 29, 2021 after Hurricane Ida made landfall in Port Fourchon, 100 miles (160 km) south of New Orleans at 1655 GMT, packing maximum sustained winds estimated at 150 miles per hour. - Hurricane Ida slammed into the coast of Louisiana Sunday as a powerful Category 4 storm, 16 years to the day after deadly Hurricane Katrina devastated the southern US city of New Orleans.
Patrick T. Fallon/AFP via Getty Images

Utility vehicles sit on a lot as rain batters downtown New Orleans, Aug. 29, 2021, after Hurricane Ida made landfall.
Patrick T. Fallon/AFP via Getty Images

In Lafourche Parish, south of New Orleans, the Thibodaux Regional Health System suffered a partial loss of power earlier Sunday, said Mindy Faciane, public information officer for the Louisiana Department of Health.

A boil water advisory has been issued for the entire East Bank of Jefferson Parish.

Aug 29, 2021, 8:23 PM EDT

Ida's latest forecast

Category 3 Hurricane Ida is churning northwest and is now located about 25 miles west-southwest of New Orleans.

A man passes by a section of roof that was blown off of a building in the French Quaeter by Hurricane Ida winds, Aug. 29, 2021, in New Orleans.
Eric Gay/AP

Sunday night, Ida will charge across southeastern Louisiana, bringing a threat of storm surge and flash flooding.

Areas of heavy rain will continue in Mississippi and Louisiana Monday morning, with 10 to 20 inches of rain in some areas. Strong, gusty winds are expected, bringing a threat of more power outages.

Even as Ida weakens, the heavy rain and flash flooding threat will persist well inland into Monday and Tuesday, eventually reaching the Tennessee Valley. Flash flood watches are in effect in Tennessee.

Hurricane Ida is Louisiana's second strongest hurricane ever when measuring by pressure. Ida's pressure fell to 930 hPa -- only 2005's catastrophic Hurricane Katrina was lower with 920 hPa.

-ABC News' Melissa Griffin

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