Sponsored message
Audience-funded nonprofit news
radio tower icon laist logo
Next Up:
0:00
0:00
Subscribe
  • Listen Now Playing Listen

The Brief

The most important stories for you to know today
  • L.A. County is hit hard by atmospheric river
    A car is smashed under a collapsed roof as mud and debris pilesalng other damaged structures.
    A view of mudslide damage in Los Angeles, California where nearly seven inches of rain had fallen by Monday.

    Topline:

    Los Angeles County appears hardest hit in the second of two big storms to hit California in a week. The storm has parked itself over the region, causing debris flows and widespread flooding.

    Why it matters: Don't put away those sandbags just yet, because even after a day of record-breaking rainfall, heavy precipitation is expected to continue Monday into Tuesday.

    What's next: Throughout the day, the storm should shift slightly to the west, affecting western L.A. and Ventura counties, which have already been getting walloped.

    Keep reading... for more details and the latest conditions.

    Where to find the latest information

    Some resources to make sure you have the most up-to-date information:

    Officials urged people in L.A. County to stay vigilant as the second of two atmospheric rivers continues to soak the region, causing floods, downed trees, debris flows and other hazards ahead of what is expected to be another full day of rain on Tuesday.

    So far, Los Angeles County has been the hardest hit since the storm parked itself over the region, causing debris flows and widespread flooding.

    The storm is expected to head southeast on Tuesday over Riverside and San Diego counties. L.A., meanwhile, will keep getting drenched. An additional 3 to 6 inches is possible before things start to dry out Wednesday.

    Downtown L.A. saw 4.1 inches of rain, breaking the previous daily rainfall record of 2.55 inches set in 1927. Sunday was the 10th wettest day in L.A. history.

    However, those rainfall totals are mild compared to what we've seen at other weather stations. More than 10 inches of precipitation has fallen on Topanga and Woodland Hills in the western San Fernando Valley.

    "Stay safe and off the roads. Only leave your house if it is absolutely necessary," L.A. Mayor Karen Bass said at a news conference Monday.

    As of noon Monday, the L.A. Fire Department had rescued trapped motorists, responded to 130 flooding incidents, and 49 reports involving mud and debris flows, officials said.

    At around 9 p.m. Sunday, 16 residents were evacuated from nine Studio City homes after a mudslide damaged two structures on Lockridge road. And L.A. firefighters evacuated people from at least three homes affected by debris flows on West Boris Drive in Tarzana. A landslide on Beverly Crest damaged at least six homes, forcing the evacuation of 15 people.

    More than 7,200 LADWP customers were without power as of midday.

    Flood watches and warnings are in place from Santa Barbara to San Diego counties through Tuesday as the heavy rain is expected to continue.

    These long, sustained periods of rain are characteristic of El Niño storms. Warmer than normal waters off the coast — often associated with the climate phenomenon — are juicing our recent storms by sending more heat and water into the atmosphere.

    Keep scrolling to see more information on rainfalls, landslides and other critically important information about the storm.

    A man walks a dog on a leash in stormy conditions next to a surging river.
    A man walks his dog on the edge of the Los Angeles River, carrying stormwater downstream Sunday, Feb. 4, 2024.
    (
    Damian Dovarganes
    /
    AP
    )

    Areas of high concern

    • The southbound 405 Freeway at Moraga Drive, where a rock slide is blocking an outside lane.
    • The 5 Freeway's southbound connector to the 110 Freeway is blocked by a rock slide.
    • San Bernardino County officials are concerned about the potential amounts of snow falling in the mountain communities from Arrowhead to Big Bear. You'll recall that last year, massive amounts of snow paralyzed the communities, stranding people in their homes, destroying a local grocery store and making it difficult for people to get food and services. They are expecting 2 to 4 feet of snow above 7,000 feet and up to 10 inches in the 5,000 to 6,000 foot level.
    • The Lost Hills Sheriff's Station says all roads going to and from Malibu are having rock and mud slides. Malibu Canyon Road is closed between Malibu Crest and Mulholland Highway.
    • Sheriff's officials advise against driving on Kanan Dume Road, Topanga Canyon and other area roads.
    • Caltrans has closed State Route 23, aka Westlake Boulevard south of East Potrero Road due to flooding.
    • Pacific Coast Highway between Warner and Seaport in Huntington Beach is closed due to flooding.

    Rainfall totals

    As of 4:30 p.m. Monday:

    • Topanga: 11:34 inches
    • Woodland Hills: 10.97 inches
    • Bel Air: 11.64 inches
    • Downtown L.A.: 7.01 inches
    • Santa Monica: 6.62 inches
    • Pasadena: 6.07 inches
    • Ventura: 3.63 inches
    • Santa Barbara: 3.88 inches
    • Mt. Baldy: 7.68 inches

    These are particularly impressive totals, given that our average yearly rainfall in the L.A. area tends to land somewhere between 12 to 15 inches.

    Don't be surprised if we see long standing rainfall records fall.

    Reports of landslides

    It's not uncommon for rocks and mud to flow off steep hillsides and onto roads during heavy rains, and debris flows were reported across the region overnight. Additional incidents are likely as the day progresses.

    • Studio City: Two homes damaged by mudflow, with a total of 16 residents evacuated from nine homes. Heavy equipment has been brought out to help clear the road.
    • Tarzana: Three homes damaged by a mudflow and two people evacuated from a home.
    • Beverly Crest: Seven homes have been damaged by debris flow and 15 people were evacuated.
    • Topanga Canyon: A mudflow has closed a portion of the canyon.
    • Southbound 5 Freeway to southbound 110 Freeway, and Riverside Drive on-ramp: Closed due to mudflow.
    • 405 Freeway just before Sunset: Small debris flow has closed the offramp.
    • Agoura Hills: Small mudslides at Cornell road and Eagleton street.
    • Malibu: 10-foot boulder reported on northbound Malibu Canyon Road just north of Pacific Coast Highway.

    The LA River

    Social media has been inundated with videos of the Los Angeles River gushing with water as historic rains pummel Southern California.

    But Jon Sweeten, a reservoir regulation engineer with the U.S. Army Corps of Engineers, Los Angeles District, said videos of the Los Angeles River seemingly on the verge of overflowing shouldn't necessarily be cause for alarm.

    “People see a lot of water in a channel that they see that's normally dry and they go, ‘Oh my goodness, there's a lot of water,’” he said. “That's just the channel operating in the way it was designed.”

    The system, Sweeten added, “is designed to hold some of the water behind the dams and release it into concrete line channels that will convey the flow very effectively to the ocean.”

    Since the 51 miles of river pass through different cities, at the time it was built, they were responsible for building bridges within their respective boundaries. Locals at the time asked for a narrow river so that it would be cheaper to build the bridges while also preserving more developable land.

    “In order to make the system work well, they designed it so that it flowed very fast so — the system flows much faster than a natural stream would flow,” Sweeten said. “Which is why it's dangerous for people to stand on the concrete in the L.A. River, because water up to your ankle is capable of knocking you off your feet.”

    Up in the mountains

    So far, snow levels have been quite high, mostly above 7,000 feet. They'll fall to about 5,500 feet by Monday night, bringing snow to popular mountain areas.

    Big Bear could see 6 to 8 inches, while Wrightwood could see 12 to 18 inches.

    Higher mountain peaks like San Jacinto (10,834 feet) could get around 1 to 3 feet of snow, while Mt. San Antonio (10,064 feet) could get 4 to 6 feet.

    The eastern San Gabriel mountains and the San Bernardino County mountains are under a winter storm warning until 10 p.m. Tuesday for areas above 6,000 feet.

    Travel is expected to be difficult, if not impossible. Higher mountains could see winds up to 70 mph, which can damage trees and knock them onto roadways. If you must head in or around these areas, pack emergency supplies in your car just in case.

    The Mount Wilson observatory closed Saturday until further notice because of the weather. Mountain High Resort was also closed Monday, but is expected to reopen on Tuesday.

    The Angeles National Forest is urging people to stay away from the area at least for the next few days. Very hazardous conditions are expected, including heavy rain, fast-moving landslides, snow, and flooding.

    Evacuations

    Los Angeles County

    • An evacuation order is in effect for homes and businesses along La Tuna Canyon Road near the burn scars from the Land Fire in 2022. More info here.
    • Evacuation order was issued Saturday night through 6 p.m. Tuesday, Feb. 6, for the area of Topanga Canyon along Santa Maria Road north of Topanga Canyon Boulevard in the Owen Fire burn scar. Officials said: "Immediate threat to life. This is a lawful order to leave now. The area is lawfully closed to public access."
    • Evacuation order for the Agua Fire Burn Area in Soledad Canyon, east of Acton.
    • Evacuation warnings are in effect Sunday morning through 6 p.m. on Tuesday, Feb. 6, for areas near the Bobcat Fire (north end) and Lake Fire burn scars.
    • An evacuation warning is in effect Sunday afternoon through 10 a.m. on Tuesday, Feb. 6 for the area in the Fish Fire burn scar in the city of Duarte.
    • Evacuation warnings are also in effect Monday afternoon through 11:59 p.m. on Tuesday, Feb. 6 for areas of Culver City’s Upper Crest area due to potential mud or debris flows. The city is asking people who live above, below, or adjacent to a hillside in or below the Upper Crest neighborhood to take extra precautions.
    • More info here.

    Orange County

    • A voluntary evacuation warning was issued for Silverado Canyon, Williams Canyon and Trabuco Canyons due to heavy rains.
    • Canyon residents were strongly encouraged to prepare and voluntarily evacuate on Sunday, especially those with disabilities, access and/or functional needs, and canyon residents with large animals.
    • More info here

    Ventura County

    • Evacuation orders were issued for Matilija Canyon, North Folk, Camino Cielo in Ojai.
    • Evacuation warnings have been issued for a number of communities in Ojai and Camarillo.
    • More info here.

    Santa Barbara County

    • Evacuation orders are in effect for:
      • Properties along waterways associated with the Thomas, Cave and Alisal burn areas.
      • Properties in the vicinity of Sycamore Creek, from Stanwood Dr. down to parts of Ninos Dr., in the city of Santa Barbara.
      • All state campgrounds including Gaviota, Refugio, El Capitan and Carpinteria
      • More info here.
    • San Bernardino County and Riverside County
      • From the Yucaipa Police Department: Evacuation warning due to potential mud and debris flow for El Dorado and Apple fire burn scars.

    Schools

    • Los Angeles Unified School District announced that all schools will be open on Monday with the exception of Topanga Elementary Charter and Vinedale College Preparatory Academy. Topanga students may report to Woodland Hills academy at 8001 Ledge Avenue in Sun Valley, while Vinedale students may report to Glenwood Elementary School.
    • Santa Monica and Malibu Unified schools are expected to open Tuesday.
    • Long Beach Unified released this statement on Sunday afternoon:
      "While there are currently no plans to close schools, in the event of any impacts or changes to scheduled plans, families from the affected schools will receive direct communication via text and email. Additionally, updates will be promptly posted on the school websites and social media platforms."
    • Santa Barbara Unified and Santa Maria Joint Union High School District have both preemptively cancelled classes and activities for Monday.

    Universities

    • UCLA- Normal operations. Classes will occur as usual
    • USC- Normal operations. Classes will occur as usual
    • Cal State Fullerton is pivoting to remote classes on Monday. Staff are encouraged to work remotely. The faculty will have access to offices and facilities as the campus will remain open.
    • UC Santa Barbara has instructed faculty to move to remote instruction or reschedule classes. Any staff impacted by weather (including if a child’s school closes) should be allowed to work remotely or “request time off”
    • Cal State Long Beach said it expects normal operations and classes to resume on Tuesday.
    • Cal Poly Pomona is moving to remote classes and remote work for non-essential employees on Monday. The university says "The campus will remain open and minimally staffed, including University Housing, the Library, Centerpointe and student health services. We will provide an update via email and on the safety and emergency web page by the end of business on Monday regarding operating plans for Tuesday, February 6, 2024."
    • Cal State Northridge remains open, but on-campus in-person classes are cancelled. Course instructors will determine whether courses will shift to online instruction or alternative assignments.
    A chart shows instense rains forecast starting Saturday night and continuing all week -- with the warning that there's a "risk for life threatening & damaging flooding." An icon for thunderstorms covers much of the Monday timetable.
    The forecast for coming days, as of Sunday morning.
    (
    Courtesy National Weather Service
    )

    Here's what rainfall totals are forecast to be in coming days:

    Yellow to deep purple on a map of Southern California indicate significant rainfall is expected Sunday through Tuesday.
    (
    Courtesy NWS San Diego
    )

    High winds are also expected to be an issue:

    A color-coded chart shows winds in the 50 to 60 mile per hour range will hit throughout Southern California.
    (
    Courtesy NWS Los Angeles
    )

    Emergency proclamations and preparation

    The powerful storm moved L.A. County Supervisor Lindsey Horvath to sign an emergency proclamation Sunday night for the region. She said the move will align the county with Gov. Gavin Newsom’s emergency order and help the county act quickly to deploy resources.

    “We had to proclaim a local emergency today following the governor’s statewide emergency declaration. We wouldn’t do that if this was something to ignore,” Horvath said.

    San Bernardino County also declared a state of emergency Sunday night in anticipation of extreme rain and snow expected through Wednesday.

    “This declaration puts the state and federal government on notice that our residents will need their help,” said San Bernadino County Supervisor Dawn Rowe.

    L.A. Mayor Karen Bass said the city is prepared to weather the effects of a potentially catastrophic storm. Bass declared a local state of emergency on Monday.

    “This has been a tough day for our city,” Bass said Monday evening.

    A man and his dog were rescued from the Pacoima Wash near Foothill Boulevard via helicopter after he jumped into the water after his dog. LAFD Fire Chief Kristen Crowley said both the man and the dog are safe now.

    Bass said more than 100 unhoused people had to be evacuated from a tiny home complex. She added that they’re being moved into a nearby shelter that wasn’t being used, but now will be “instantly” filled.

    Bass also answered a call from President Joe Biden towards the end of Monday’s news conference and held the phone up to the microphone so he could speak to the people of Los Angeles.

    “We’ll get any help on the way as soon as you guys request it, so just let me know,” Biden said.

    Mandatory evacuations have been issued for certain areas of L.A. and Santa Barbara counties.

    Why LAUSD plans to be open Monday

    L.A. Unified Superintendent Alberto Carvalho said based on Monday's forecast, schools will remain open tomorrow morning, unless weather conditions change. District officials said they issue an update at 6 a.m. Monday.

    Carvalho said in a news conference Sunday that the schools will remain open because "they are the places where many of our kids receive their nutrition."

    However, Vinedale Elementary School, which is in an area in Sun Valley that is under mandatory evacuation, will be shut down. Students will report to Glenwood Elementary School about a mile away.

    Heavy rains are expected to continue through Monday morning, with some of the most intense downpours expected between 2 a.m. and 3 a.m.. The National Weather Service is warning of "life threatening flooding, damaging winds and heavy mountain snow," and has revised the expected rain totals to up to 8 inches across the greater L.A., and up to 14 inches in the mountains and foothills, through Tuesday.

    "Los Angeles County now seems to be the area of most concern where the heaviest rain will last the longest," said Ryan Kittell at the National Weather Service.

    Flooding and other dangers are expected for across the state. California officials warned that the Southern California coastline — including Los Angeles and San Diego metro areas — would likely see the most severe damage.

    "These next storms are going to be impactful and dangerous, and most of the damaging impacts most likely to our coastal and southern regions," said Nancy Ward, director of the California Governor's Office of Emergency Services. "They're the most dangerous natural disasters that we have, killing more people from storm damages and flooding than wildfires every year."

    More ahead

    Residents in mountain, canyon and coastal areas should prepare for the risk of debris flows and flooding to remain at least through Tuesday.

    Those in landslide prone areas like the Palos Verdes Peninsula should be on the lookout for indications of land movement, including the formation of new cracks, the fracturing of underground utilities, doors and windows falling out of plumb and sounds of creaks and groans coming from the ground.

    Sandbags are available at all Los Angeles Fire Department locations. Sand is also available at select other locations, and updates on availability can be checked here.

    Los Angeles County Fire Department locations also have sandbags and sand.

    Sand and sandbags are available at these locations in Orange County.

    Understanding National Weather Service warnings

    Here’s an excerpt from our guide to understanding flood warnings, if any are issued:

    • Flood advisories are how the NWS begins to raise the alarm. The goal is to give people enough time to take action.
    • Flood watches are your indicators to get prepared to move.
    • A flood warning is issued when a hazardous weather event is imminent or already happening. When one is issued for your area, you need to get to higher ground immediately.
    • A flash flood warning is issued when a flash flood is coming or in progress. Flash floods are sudden and violent floods that can start within minutes.

    Read more: Flash Flood Warnings? Watches? Here’s What You Need To Know

    Tips for driving in the rain

    Advice on driving in the rain:

    • Check weather and road conditions all along your planned route
    • Slow down
    • Keep a wider-than-usual distance between your vehicle and the one in front
    • Don't drive through standing water — as little as 12 inches of rushing water can carry away most cars, and two feet can carry away SUVs and trucks.
    • Make sure tires are fully inflated
    • Check windshield wiper blades and replace if necessary

    Read more: What You Should Do If You End Up Driving In A Flooded Area

    Downed tree, power line or flooded road?

    Dial 911 if it's an emergency.

    However, if you need to report a flooded road or a downed tree, you can call the following non-emergency numbers:

    • L.A. City: Dial 311 for a flooded road or downed tree. Call (800) DIAL-DWP if you see a downed power line.
    • L.A. County: (800) 675-HELP
    • Ventura County: (805) 384-1500
    • Orange County: (714) 955-0200 or visit here.

    If you're in L.A. County and need sand bags you can find some at local fire houses.

    Staying safe when the winds are high

    • Watch for traffic signals that may be out. Approach those intersections as four-way stops.
    • Make sure you have a battery-operated radio and flashlights. Check the batteries to make sure they are fresh. Use flashlights for lighting during a power outage; do not use candles because they may pose a significant fire hazard.
    • If you’re in a vehicle with a fallen power line on it, stay in the vehicle and remain calm until help arrives. It is OK to use your cellphone to call 911. If you must leave the vehicle, remember to exit away from downed power lines and exit by jumping from the vehicle and landing with both feet together. You must not touch the vehicle and the ground at the same time. Then proceed away from the vehicle by shuffling and not picking up your feet until you are several yards away. 
    • Water and electricity don’t mix. Water is an excellent conductor of electricity. Do not step in or enter any water that a downed power line may be touching.
    • Do not use any equipment inside that is designed for outdoor heating or cooking. Such equipment can emit carbon monoxide and other toxic gases.
    • If you use a generator, place it outdoors and plug individual appliances directly into it, using a heavy-duty extension cord. Connecting generators directly to household circuits creates “backfeed,” which is dangerous to repair crews.
    • Leave the doors of your refrigerator and freezer closed to keep food as fresh as possible. Place blocks of ice inside to help keep food cold. Check food carefully for signs of spoilage. 
    • Check on your neighbors to make sure everyone is safe.

    Tips on staying warm

    • State law requires residential units to have heating systems that can keep indoor temperatures at a minimum of 70 degrees. That means every dwelling unit and guest room offered for rent or lease should offer heating equipment, usually central air conditioning (A/C) or a wall heater. — Caitlin Hernández
    • Use heat smartly to save money: Cranking things like the A/C and wall heaters can be expensive. If money is tight, be judicious about how and when you use your utilities. For example, only use heaters at night or only set the thermostat to around 70 degrees.
    • Open and close those vents: If you have central A/C, look at where the vents are around your home. Are any open in places where you don’t stay long? Practice opening and closing those so warm air only goes where you need it (most vents should have a small toggle lever). Humidifiers can also help you warm things up — and it’s useful to add moisture into our dry air.
    • Adjust your wall heaters: If you have a wall heater, you can change the output by adjusting the knob (usually at the bottom). Since wall heaters can only warm the areas where they’re placed, it’s essential to close doors to rooms you won’t be in so hot air doesn’t get wasted.
    • Turn on your ceiling fan (really): If you have a ceiling fan, try turning it on. This sounds counterintuitive, but there’s science behind it. The direction a fan turns can push air in different directions, and since hot air floats up, you’ll want to move that around. Your fan should spin clockwise to create an updraft to circulate. Not all fans will have this option, though.

    Sign up for emergency alerts

    How we're reporting on this

    George Kiriyama, a senior editor, is tracking the storm and adding updates along with Kevin Tidmarsh, a producer, and Fiona Ng, LAist's weekend editor. Other LAist staff members will be keeping a close eye on how the storm is affecting various parts of the region.

    This is a developing story. We fact check everything and rely only on information from credible sources (think fire, police, government officials and reporters on the ground). Sometimes, however, we make mistakes and/or initial reports turn out to be wrong. In all cases, we strive to bring you the most accurate information in real time and will update this story as new information becomes available.

    Your questions or ideas

  • Companies that serve the area face shortfalls
    A woman wearing a sunhat waters the grass on the lot where her home, which was destroyed in the Eaton Fire. A charred fence and wall darkened in a patch stands behind her.
    Water companies that serve Altadena lost thousands of customers in the Eaton Fire.

    Topline:

    Water companies that serve much of Altadena are expected to hold public meetings this week to discuss how they’ll rebuild and stay in business after the Eaton Fire reduced many of their customers’ homes to ash. Two out of the three mutual water companies in the area are holding public meetings this week to discuss raising rates.

    The background: Last year’s fires not only destroyed homes and businesses, but also critical infrastructure, such as water delivery systems. Rebuilding that infrastructure is particularly challenging in unincorporated areas such as Altadena, which is primarily served by three tiny, private water companies — Las Flores (more on their situation here), Rubio Cañon and Lincoln Avenue water companies. Unlike public utilities, these private, not-for-profit companies have less access to state and federal funding resources to rebuild, so customers are likely going to have to foot much of the bill. Customers of these companies are actually co-owners, called shareholders. Each is governed by its own set of bylaws.

    Complications: All of Altadena’s water agencies have sued Southern California Edison, accusing it of responsibility for the Eaton Fire, but the result and timeline of such lawsuits remain uncertain. In turn, Edison has sued the water companies (among others), claiming they didn’t provide enough water for firefighters during the fire.

    Rubio Cañon Land and Water Association: Rubio Cañon Land and Water Association served about 9,600 people in Altadena but, after the Eaton Fire, about 30% of that customer base is now made up of empty lots. While insurance is covering much of the most critical infrastructure repairs, the company faces a $1.95 million revenue shortfall.

    • Its proposal: To close the budget gap, the company is proposing an 11% rate hike, plus a “fire recovery charge” between $10 and $30 a month. 
    • What about merging with other water companies? While Lincoln and Las Flores water companies have submitted paperwork to the state to study consolidation, Rubio Cañon has rejected being part of the effort. “Such consolidation could trigger a 7-12 year state process and significant shareholder costs, as Altadena is not classified as a disadvantaged community to qualify for the full menu of state resources,” the company wrote in its update ahead of this week’s meeting, calling such consolidation discussions “premature” and “unproductive.” 
    • Upcoming board meeting: The board will hear from the public about the proposal at a meeting at 5 p.m. Tuesday at the Altadena Community Center. Attendees will have to prove they're a customer. More details here

    Lincoln Avenue Water Company: Lincoln Avenue served more than 16,000 people in Altadena before the Eaton Fire. Now, about 58% of its customers and revenue are gone. Although the company says it has sufficient reserves and is not facing bankruptcy in the near term, it has decided to raise water bills by $15 a month for existing customers. To improve its long term resilience, the company is also considering merging with Las Flores water company, but that will take time.

    • Upcoming board meetings: The board will discuss the rate hike at a special meeting at 5:30 p.m. Thursday at the Loma Alta Park Community Room. The meeting is open to shareholders only. 
  • Sponsored message
  • These local athletes will compete in Winter Games
    The 2026 Winter Olympics in Milan begin Friday, and eight athletes have roots in Southern California.

    Topline:

    The 2026 Winter Olympics in Milan begin Friday and eight athletes have roots in Southern California, including Los Angeles, Riverside and San Bernardino counties.

    Read on … for a full rundown on the SoCal’s Olympic athletes.

    The 2026 Winter Olympics in Milan begin Friday and eight athletes have roots in Southern California, including Los Angeles, Riverside and San Bernardino counties.

    Team USA’s 232-member roster includes 21 athletes from California. The Winter Games begin Feb. 6 and end on Feb. 22.

    Here's a list of who is from L.A. County:

    Where other SoCal athletes are from:

    What about the 2026 Paralympics? The Milano Cortina 2026 Paralympics will start on March 6 and run through March 15. Not all qualifying athletes have been announced yet.

    You can watch the games starting Friday on NBC and streaming on Peacock.

  • Researcher talks about risks to protesters
    A man in tactical gear shoots a cannister off frame. Another man in tactical gear is mounted on a horse.
    The LAPD deployed munitions and mounted units.

    Topline:

    A federal judge banned LAPD from using 40mm projectiles at protests last month, but researcher Scott Reynhout of the nonprofit Physicians for Human Rights says the department still utilizes other crowd control weapons that can be just as dangerous — if not more so.

    Why it matters: Local, state and federal law enforcement agencies have used thousands of crowd control weapons against protesters in L.A. since June 2025, when federal immigration raids began escalating tensions in the region. Many people who were never accused of breaking the law have still been struck by what are known as “less-lethal” crowd-control weapons, including rubber bullets, tear gas and flash bang grenades.

    The most dangerous crowd control weapons: The LAPD uses a 37mm launcher that is inherently risky, Reynhout said. Even though the 37mm rubber bullets are smaller than the 40mm projectiles the LAPD was banned from using at protests, they are more likely to hit sensitive areas like the face and neck because they fire multiple projectiles in each shell.

    Read on... for more on the crowd control weapons used by local law enforcement agencies.

    Local, state and federal law enforcement agencies have reported using thousands of crowd control munitions against protesters in L.A. since June 2025, when federal immigration sweeps began escalating tensions in the region.

    Many people who were never accused of breaking the law nonetheless have been struck by what are known as “less-lethal” crowd control weapons, including rubber bullets, tear gas and flash bang grenades.

    Legal experts and witnesses told LAist some of these instances violated California’s protest laws.

    While a federal judge banned the LAPD from using 40mm projectiles at protests last month, the department still uses other crowd control weapons. According to Scott Reynhout, who researches these weapons for Physicians for Human Rights, a nonpartisan nonprofit, some of these weapons can be just as dangerous as the banned projectiles — if not more so.

    LAist spoke with Reynhout to better understand what they do and how people protesting lawfully can protect themselves.

    Reynhout said it's very important that people pay attention if law enforcement declares an unlawful assembly, which they are required to do before using crowd control weapons in most cases.

    “ If the police have declared an illegal assembly, it would behoove you to take steps to isolate yourself from that particular situation,” Reynhout said. “If that is not possible for you, for whatever reason — say, you live in the particular area where you are — then you could consider [protecting] yourself from chemical irritants or potentially from impact projectiles.”

    Some of the most dangerous crowd control weapons used in L.A.

    Physicians for Human Rights’ international study, Lethal in Disguise, found weapons that fire multiple projectiles at once were “far and away the most dangerous” type of crowd control weapons.

     "82% of all the recorded injuries in the medical literature that came from impact projectiles were from ... multiple projectile impact projectiles,” Reynhout told LAist. “And 96% of all the ocular injuries from impact projectiles were from these multiple projectile impact projectiles."

    He said the LAPD is the only police department in the U.S. he is aware of that uses this type of weapon. The department uses a 37mm less-lethal launcher (LLM) that shoots five rubber bullets with each shell.

    According to reports required by Assembly Bill 48, the department used more than 600 of these shells — that’s over 3,000 projectiles — against anti-ICE protesters last June. They have continued to report using the 37mm launcher, most recently to disperse crowds after the Dodgers World Series win on Nov. 2, according to AB 48 reports.

    The 37mm launcher is inherently risky, Reynhout said. Even though the 37mm rubber bullets are smaller than the 40mm projectiles the LAPD was banned from using at protests, they are more likely to hit sensitive areas like the face and neck.

    The use of multiple projectiles causes the 37mm projectiles to scatter in a cone shape once they leave the launcher, making them much more difficult to control than a single projectile. He said LAPD’s policy of “skip firing,” which means officers are instructed to aim 5 to 10 feet in front of the person they are shooting at, also adds randomness.

    A diagram showing one figure shooting a less-lethal projectile launcher at the ground and toward another figure.
    A diagram showing LAPD's policy of "skip firing" the 37mm less-lethal launcher at targets.
    (
    LAPD Use of Force Directive
    )

    “ The real risk behind these multi-shot impact projectiles,” he said, “is that you just really don't have any control over where these bullets go in the end.”

    Reynhout said people standing beside or behind the intended target could very easily get hit, which he believes was likely the case when Australian reporter Lauren Tomasi was struck in the leg by a rubber bullet in June.

    [Note: LAist correspondent Adolfo Guzman-Lopez was struck in the throat by a projectile at a 2020 protest. Long Beach police later said they believed that injury was caused by a ricochet of a foam round.]

    LAist reached out to LAPD for comment on their use of the 37mm launcher, but the department did not respond.

    Another type of crowd control weapon found to be especially dangerous is the use of beanbag rounds, usually fired from a 12-gauge shotgun. These rounds fire small lead pellets sealed in a fabric bag.

    Reynhout said the use of these rounds can be “horrific” and leave people with life-threatening injuries.

    According to LAPD policy, beanbag rounds are not allowed to be used for crowd control, but other agencies have used them. The California Highway Patrol reported using beanbag rounds against anti-ICE protesters last June.

    If you find yourself in a situation where projectiles are being deployed, Reynhout advises focusing on protecting your face and eyes. That’s where the most serious injuries occur.

    Reynhout said ballistic eyewear that meets military standards (MIL-PRF-32432) could offer protection against some of the most severe injuries.

    He said the 40mm or 37mm projectiles can be similar to getting hit by a golf ball by someone swinging just 6 feet away, and while things like bike helmets, paintball masks, hockey masks or even soft body armor might help to some degree, they aren’t designed to protect someone from that kind of impact.

    What you may most likely be affected by: Chemical agents

    Chemical agents like tear gas and pepper spray are crowd control weapons that saturate an area and affect everyone in it, Reynhout told LAist, and that includes people who may not even be part of a demonstration.

    He said you should be especially aware of these weapons being used near you if you have asthma or any airway or respiratory system issues because they can provoke severe reactions in some cases.

    In their report, Reynhout and other researchers found that children and older people are also at risk of severe reactions, which could be life-threatening.

    There is gear on the market to mitigate those risks, including sealed safety goggles and respirators (N-, P- or R-100). If you find yourself exposed to a chemical irritant like tear gas or pepper spray, Reynhout said there is nothing shown to be more effective than flushing the area for 10 to 15 minutes with saline solution.

    The saline solution should ideally be sterile and at body temperature, he told LAist, but plain water also works if that is what you have available. The important thing is that you continue to flush the area and dilute the chemicals.

    For skin or clothing, Reynhout said dilution with water is still the key, but you can use some Dawn dish soap to help wash away pepper spray.

    Other dangers

    California law enforcement officers have also used flash bang grenades in response to protests since June. The L.A. County Sheriff’s Department and California Highway Patrol together used more than 300 aerial flash bang grenades on June 8, according to AB 48 reports. Those are crowd control munitions shot out of 40mm launchers that explode mid-air and create 170 dB of sound and 5 million candelas of light.

    LAist asked the LAPD about their policy on using flash bang grenades for crowd control, but the department did not respond. The LAPD has not listed any uses of flash bang grenades in their AB 48 reports dating back to April 2024.

    Aside from these, there are a number of other crowd control weapons and devices that are used by law enforcement agencies in the L.A. area: grenades that explode to release small rubber balls, pepper balls, batons or — unique to the LAPD — officers on horseback using wooden practice swords called “bokken.”

    How to reach me

    If you have a tip, you can reach me on Signal. My username is  jrynning.56.

    Reynhout said deciding how much protection you might choose to take with you to a protest is very personal. Some bulkier items might restrict your movement, cause you to overheat or impede your ability to maintain situational awareness, so it is important to consider what risks you may face and use your best judgement.

    Sometimes, he said, that best judgment might be to walk away from the situation.

  • Replay: LA Mayor Karen Bass deliver annual address
    L.A. Mayor Karen Bass on a stage in front of a banner that reads "Games for All."
    L.A. Mayor Karen Bass delivers her 2026 State of the City address.

    Topline:

    L.A. Mayor Karen Bass laid out her vision for Los Angeles at her first of two "State of the City" addresses Monday afternoon at Exposition Park. The speech, which comes as her race for re-election ramps up, was framed as a celebration of the coming World Cup.

    Why now: Bass made the remarks at the L.A. Memorial Coliseum, which will host a FIFA Fan Festival June 11-15 to coincide with the start of the tournament.

    Read on... for what what she said in the annual "State of the City" address.

    L.A. Mayor Karen Bass laid out her vision for Los Angeles at her first of two "State of the City" addresses Monday afternoon at Exposition Park.

    The speech, which comes as her race for re-election ramps up, was framed as a celebration of the coming World Cup.

    "Let's show the nation and the world we are the greatest city on earth," Bass told the crowd outside the L.A. Memorial Coliseum.

    But the mayor moved quickly from announcing that there would be more than 100 free watch parties for the tournament into a retrospective of L.A.'s terrible 2025 — from the January fires to the immigration agents that descended on the city in June and haven't left.

    "Raids continue every day in Los Angeles and with them have come the devastating losses of life," she said, naming Renee Good, Alex Pretti and Keith Porter Jr., who was shot by an off-duty ICE agent in Los Angeles on New Year's Eve. " This senseless death, lawlessness and violence must end and so must the presence of ICE in Los Angeles."

    Bass described local leaders as the last line of defense against the actions of the federal government.

    L.A.’s fire recovery

    She also discussed the ongoing recovery of Pacific Palisades, where she has faced substantial criticism for the city's response to the fire and first year of rebuilding, which some residents say has been too slow.

    " We've brought in new leadership to overhaul fire preparedness and emergency response," Bass said, referencing her decision to remove former fire chief Kristin Crowley. "And yes, we're fighting the next battle: holding financial institutions and the insurance industry from abandoning Los Angeles because recovery should never feel harder than the disaster itself."

    Bass said 400 homes lost to the fire are currently under construction, and that she would travel to Sacramento next week with Councilmember Traci Park and Pacific Palisades residents to push for more state funding for recovery. The Palisades Fire destroyed nearly 7,000 homes and killed 12 people.

    The mayor's response to the Palisades Fire is a key issue in her race for re-election. Two of Bass's challengers, former LAUSD Superintendent Austin Beutner and influencer Spencer Pratt, had their homes damaged or destroyed in the disaster.

    Housing and homelessness

    Bass then laid out her efforts around housing and homelessness, pointing to an affordability crisis that makes staying in stable housing, or buying a first home, out of reach for many Angelenos.

    "The greatest test of L.A. is whether people can actually afford to live here year across Los Angeles," the mayor said in her address. "Too many neighbors are packing multiple families into one apartment are working two and three jobs just to stay housed."

    Bass lauded her first executive directive ordering city officials to fast-track the construction of developments that have entirely affordable housing units, which she said had "accelerated  more than 30,000 housing units across the city." She also celebrated the city's move to significantly lower rent hikes, in the first reform to rent control in 40 years.

    Bass then turned to homelessness, doubling down on her commitment to her signature "Inside Safe" program, which aims to move people off the streets and into interim housing. She said that the city had cleared nearly 120 encampments.

    Bass focused on the fight to end homelessness for veterans in Los Angeles — a focus she said was interrupted by the 2025 fires. She said the city had issued 600 housing vouchers for veterans since last year.

    She ended the speech where she started — talking about the city's role as host of the World Cup and 2028 Olympic Games.

    " We will continue to focus on the fundamentals, the things that shape how a city feels to the people who live here and the millions who will visit," she said.

    Watch the replay

    This is a developing story and will be updated.