Over 100,000 power outages have been reported in parts of the state, with Ventura and Los Angeles particularly hard-hit.
The 2021 hurricane season is on track to run out of names from a list of 21.
The National Hurricane Center warned that the storm could be felt in the U.S. by the weekend.
Category 4 Hurricane Sam is set to become one of the longest sustained storms in recent memory.
Sam, the season's seventh named hurricane, strengthened over open Atlantic Ocean waters on Friday.
Attorney Mark Metzger said he decided to walk along the Galveston beach while holding a fake bloodied knife to bring "positive vibes" to the world.
"It doesn't have to be a hurricane," Turner said. "These systems can intensify very, very quickly, and you can end up getting more rain than you anticipated."
Hurricane names beginning with the letter "I" are the most likely to have been retired.
The storm will bring most areas about five to 10 inches of rain, though some isolated places could receive up to 15 inches.
"Groups from all over the Gulf South converged to help rescue the injured dolphin," according to a Facebook post from the Slidell Police Department.
The Louisiana Department of Health said each of the nursing homes "clearly failed to execute their emergency preparedness plans to provide essential care and services."
On Monday, energy company Entergy announced that they had restored power to 48 percent of customers in Louisiana.
"Larry is expected to remain a major hurricane through the middle of this week," said the National Hurricane Center on Sunday.
Rescuers stood in waist-deep water as they worked to free the animal, in just one sign of the destruction left behind by Hurricane Ida.
"They just kept trying to get out, and it was so sad. You can tell they were trying to get out, but they just couldn't," Angel Thomas said.
The governor said that those who fled to avoid Hurricane Ida should remain where they are until it's safe to return home.
The man's body has not been found.
Ida, which was downgraded from a Category 4 hurricane to a tropical storm on Monday, is expected to continue losing strength but will remain a dangerous storm system as it moves across much of the Southeast and into the North.
Entergy said in a statement that people in "the hardest-hit areas" could experience outages for up to three weeks, while most customers will be restored sooner.
A generator failure at Thibodaux Regional Health System sent doctors scrambling to keep patients on ventilators in the ICU breathing.
Fuel industry analysts predict an increase in gas prices due to the storm as the country heads into Labor Day weekend.
Several charities—both national and local to Louisiana—have pledged to help victims with immediate aid and long-term recovery.
The National Hurricane Center said Monday that Ida was downgraded to a tropical storm but that dangerous storm surge and strong winds were still expected.
A woman has shared footage from her father's home in Larose, where the roof was torn away by devastating winds.
She was forced to run for cover as debris began raining down on the hospital windows.
Ida hit near Port Fourchon, Louisiana, just before noon local time on Sunday, with maximum sustained winds of 150 miles an hour.
"I for sure thought we were going to drown," said mom Vanessa Yates. "Me and my baby wouldn't make it."
In a Twitter message, meteorologist Rachel Frank wrote: "I know I should have a thicker skin. But I'm a person and I have reached my limit."
Tropical Storm Henri hit the Rhode Island coast early Sunday afternoon, bringing dangerous rain, high winds and flash flooding to the region.
"Customers should be prepared for lengthy outages," warned a company official, adding, "Now's the time to prepare with your family."