Storm-prompted snowfall across the Sierra Nevada aids water supply

Atmospheric river lashes California with heavy rain and wind

By Mary Gilbert, Antoinette Radford, Eric Zerkel, Elise Hammond, Zoe Sottile, Amir Vera, Kathleen Magramo and Deva Lee, CNN

Updated 1252 GMT (2052 HKT) February 6, 2024
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12:57 a.m. ET, February 6, 2024

Storm-prompted snowfall across the Sierra Nevada aids water supply

From CNN's Robert Shackelford

Heavy snowfall associated with the atmospheric river-fueled storm system over California has been helping with the snowpack accumulation in the Sierra Nevada mountains, which is crucial to the water supply. 

Snowpack is the amount or thickness of snow that accumulates on the ground, according to the US Environmental Protection Agency. Snowpack in the mountains "plays a key role in the water cycle" in the Western US, the EPA says, "storing water in the winter when the snow falls and releasing it as runoff in spring and summer when the snow melts."

"Millions of people in the West depend on the melting of mountain snowpack for hydropower, irrigation, and drinking water," the EPA says.

As of February 5, the California snowpack is at 72% of normal, which is up 20% from a week ago and up 12% from just three days ago, according to the National Weather Service (NWS):

Here are the latest preliminary snowfall reports across the Sierra Nevada mountain range, according to the NWS: 

  • Mammoth Mountain ski base, CA: 33 inches
  • June Mountain ski base, CA: 31 inches
  • Northstar ski base, CA: 27 inches
  • Mt. Rose ski base, NV: 26 inches
  • Kirkwood Meadows, CA: 25 inches

Snowfall is ongoing across the mountain range, so additional relief is expected.

Winter storm warnings remain for the Sierra Nevada range until Tuesday morning, where snowfall totals of up to a foot are possible across lower elevations and snowfall up to 7 feet is possible on the higher peaks.

3:29 a.m. ET, February 6, 2024

Impacts not as significant but was “more like a thousand cuts," Los Angeles county supervisor says 

From CNN's Taylor Romine

An aerial view shows the Los Angeles River swollen by storm runoff in Los Angeles, California, on February 5.
An aerial view shows the Los Angeles River swollen by storm runoff in Los Angeles, California, on February 5. Mario Tama/Getty Images

While the damage across Los Angeles County was not as significant as officials prepared for, it was “more like a thousand cuts,” said Lindsey Horvath, chair of the Los Angeles County Board of Supervisors.    

“Sink holes, downed trees, areas of erosion — but we are doing well and our crews remain out,” she said. 

Two evacuations orders remain in place — one at the Owen Fire burn scar in Topanga Canyon and one at the Agua Fire burn scar near Acton, Horvath said.  

The Los Angeles River is at one-third of its capacity as of 4 p.m. PT, she said, and county storm water facilities have captured 1.3 billion gallons of water, which she said can serve over 32,000 homes for over a year.

10:02 p.m. ET, February 5, 2024

President Joe Biden makes surprise comments via phone at news conference on LA flooding  

From CNN’s Taylor Romine  

Los Angeles Mayor Karen Bass holds a phone to the microphone to allow President Biden to make remarks  during a press conference on Monday, February, 5.
Los Angeles Mayor Karen Bass holds a phone to the microphone to allow President Biden to make remarks during a press conference on Monday, February, 5. KABC

President Joe Biden unexpectedly made comments via phone during a news conference about flooding in Los Angeles Monday, saying responders are "undergoing one hell of an operation" amid catastrophic flash flooding.

Los Angeles Mayor Karen Bass was on the phone with Biden and asked him if he wanted to say a few words during the presser.

Biden said he just spoke with California Gov. Gavin Newsom and they are working closely to get resources mobilized.

"If there is anything more you need from us, my FEMA Director Deanne Criswell is on top of this along with FEMA Region 9 Bob Fenton. And FEMA is well-positioned with personnel state of emergency operations center, with resources across the state. And we will get any help on the way as soon as you guys request it. So just let me know, that’s why I’m callin’.”  

After he made the comments, Bass thanked the president and then walked away from the podium to continue the conversation privately.  

9:43 p.m. ET, February 5, 2024

Man rescued after jumping into rain-swollen Los Angeles River trying to save dog, LAFD says

From CNN’s Amanda Jackson and Taylor Romine

Los Angeles Fire Department released video of the swift-water rescue after a man jumped into the Los Angeles River in an attempt to save a dog.
Los Angeles Fire Department released video of the swift-water rescue after a man jumped into the Los Angeles River in an attempt to save a dog. Los Angeles Fire Department

The Los Angeles Fire Department rescued a man who jumped into the rapidly flowing Los Angeles River trying to save his dog.

"Crews responded to several bridges and access points down river and located the canine, who had managed to swim safely to the edge and escape the rapids," the LAFD said in an Instagram post.

An LAFD helicopter lifted the man out of the water and he was sent to hospital, while his dog was taken to a local shelter for care for minor injuries.

Separately, the Los Angeles County Fire Department rescued 16 people and 5 cats from flooded areas during two swift water responses, said Lindsey Horvath, chair of the Los Angeles County Board of Supervisors.  

9:45 p.m. ET, February 5, 2024

Over 120 mudslides and debris flows reported in Los Angeles

From CNN’s Taylor Romine 

Mud and debris block portions of a street in the Beverly Crest area of Los Angeles on Monday, February 5.
Mud and debris block portions of a street in the Beverly Crest area of Los Angeles on Monday, February 5. Allen J. Schaben/Los Angeles Times/Getty Images

Over 120 mudslides and debris flows were reported in the city of Los Angeles after a storm soaked the area, fire chief Kristin Crowley said during a news conference Monday.  

Officials are investigating the structural safety of approximately 25 buildings that “were damaged due to heavy rainfall and mudslides,” she said.

Crews are working to clear and repair roads and infrastructure affected by the storms, and the Department of Water and Power is working to restore power in some areas. 

“As the storm continues, there are many water-soaked hillsides that have the potential to slide. We would like to reiterate to use extreme caution if you live or travel in these areas,” she said.  

9:46 p.m. ET, February 5, 2024

100 unhoused people evacuated from tiny home complex due to flooding  

From CNN's Taylor Romine

One hundred unhoused people were evacuated from a tiny home complex Monday due to flooding, Los Angeles Mayor Karen Bass said during a news conference.  

“We are evacuating them right now, and we are housing them in a shelter nearby,” she said, adding the shelter in which they were placed was not being used previously.

Los Angeles was home to an estimated 75,518 unhoused people as of a 2023 report.

10:03 p.m. ET, February 5, 2024

Los Angeles resident describes mudslide engulfing her home

From CNN staff

Los Angeles resident Dion Perraneau spoke with CNN on Monday, February 5, about the damage the storm caused.
Los Angeles resident Dion Perraneau spoke with CNN on Monday, February 5, about the damage the storm caused. CNN

Los Angeles resident Dion Perraneau showed her home covered in 3-foot-deep mud as torrential rain and debris swept into her home around 4 a.m.

"So, it's just a big mud pocket right now," she told CNN's Anderson Cooper, as she showed mud covering the floor of her bedroom.

Perraneau shared an image showing a broken sliding glass door.
Perraneau shared an image showing a broken sliding glass door. Courtesy Dion Perraneau

A glass sliding door had also shattered when the mudslide gushed into her home.

"What I did was this morning when we saw that the bedroom had been breached, I pulled the car out of... the garage because I wanted to make sure that it didn't get stuck if there's any kind of structural damage," she told CNN's Anderson Cooper.

As Perraneau tries to clear the deluge left behind, she said she was also concerned whether insurance would cover any damages to the property, saying her agent mentioned it was unclear if they would cover anything to do with slides.

10:03 p.m. ET, February 5, 2024

Los Angeles mayor says it’s “been a tough day for our city” as dangerous storm hits 

From CNN's Taylor Romine

Los Angeles Mayor Karen Bass said it’s “been a tough day for our city” during a news conference Monday after a severe storm spurred mudslides in some areas of the city in the last day. 

Bass toured Encino, Studio City, and Baldwin Hills to see some of the damage caused by mud and debris.

“I know this is hard, but Angelenos, we will get through this,” the mayor said. 

The mayor says she is in regular communication with California Gov. Gavin Newsom and also spoke with Vice President Kamala Harris, who both said they are ready to help. 

8:22 p.m. ET, February 5, 2024

Storm-related death reported in Santa Cruz County

From CNN's Taylor Romine

A 45-year-old Santa Cruz County resident was killed Sunday afternoon after a tree fell into a house during the intense winter storm, the sheriff's department told CNN Monday. 

Santa Cruz County Sheriff deputies responded with fire crews after a tree fell into a home in Boulder Creek, Public Information Officer Ashley Keehn told CNN. 

"One resident made it out of the house, but another was trapped inside. Unfortunately, the resident inside sustained injuries from the tree falling into the home and was pronounced deceased at the scene," she said.

She added that the victim was identified as 45-year-old Robert Brainard III of Boulder Creek.