Residents across Los Angeles County braced for a relentless onslaught of rain, wind, and snow as a powerful atmospheric river storm system swept into Southern California on February 16, 2026. The National Weather Service (NWS) had already sounded the alarm with a flood watch issued early Monday morning, warning that between 9 a.m. and 9 p.m., conditions would be ripe for flash flooding, mudslides, and debris flows—especially in burn scar areas left vulnerable by last year’s wildfires. As the day unfolded, the warnings proved prescient: streets from Hollywood Hills to Melrose Hill were inundated, cars stranded in rising waters, and the usually bustling Venice Beach Boardwalk transformed into a ghost town.
According to Fox Weather, the brunt of the storm hit Los Angeles on Monday, with heavy rain flooding neighborhoods and water climbing up to car tires in places like Melrose Hill. Residents, using the Citizen app, shared real-time alerts and videos, urging each other to avoid flooded roads and warning, “Never attempt to cross standing or moving water.” The National Weather Service reinforced these pleas with a flash flood alert for all of LA County, emphasizing the life-threatening nature of the situation.
Travelers and commuters faced a daunting landscape. Portions of the Pacific Coast Highway were rendered impassable by mudslides, and the LAPD confirmed that Public Works crews were out in force, clearing debris to keep critical routes open. The famed Santa Monica Pier, usually teeming with tourists even on holidays, was shrouded in rain and clouds—a rare sight for Los Angeles. Multiple cars were reported stranded in high water on Vineland Avenue, while Olympic Boulevard and Sawtelle saw similar scenes, with firefighters helping at least one person escape a flooded vehicle, according to City News Service.
Forecasters warned that two back-to-back weather systems would batter the region, bringing not just heavy rain but also strong winds, dangerous surf, thunderstorms, and even the possibility of isolated tornadoes. The NWS projected 2 to 4 inches of rain along the coast and in valleys, with 4 to 8 inches expected in the mountains and foothills. Snow levels, initially near 6,500 feet, were forecast to drop to around 5,000 feet by Tuesday, threatening to blanket major mountain passes—including Interstate 5 at Tejon Pass—through midweek.
With memories still fresh from the devastating wildfires of January 2025, Los Angeles Mayor Karen Bass issued evacuation warnings for neighborhoods scarred by those blazes. In a statement, Bass reassured residents: “Ahead of heavy rain forecasted this week, first responders, Public Works crews and City personnel are taking action to keep Angelenos safe and will be ready to respond to any potential impacts. This is likely to be another significant rain event. All Angelenos—especially those in burn scar areas—are encouraged to follow official guidance, use caution on the roads, plan ahead and stay informed.” Parts of LA’s Topanga community were closed, and evacuation warnings remained in effect as the storm threatened to trigger mudslides and debris flows in vulnerable zones.
The list of areas under the flood watch was extensive, as noted in the NWS advisory: from the Malibu coastline and Palos Verdes Peninsula to the San Fernando Valley, Santa Clarita Valley, and the Santa Monica Mountains. Even the offshore Channel Islands were included. The advisory was clear: “Flooding caused by excessive rainfall is possible. Rock and mud slides are possible near steep terrain. Debris flows are possible on burn scars.” The NWS cautioned that flash flooding could develop with little warning, and “extensive street flooding is possible.”
Southern California’s notorious freeways were not spared. Low-elevation snow threatened to snarl traffic on key arteries like Interstate 5 and Highway 33, while travel through mountain passes was expected to remain treacherous through at least Wednesday. The first storm, according to NBC Los Angeles, was expected to be the heaviest, with rainfall totals of 1 to 3 inches in coastal and valley areas and up to 5 inches in the mountains by late Monday. A second system, arriving Tuesday night into Wednesday, would bring colder temperatures and additional rain and mountain snow, potentially pushing total rainfall in some mountain areas to 6 inches or more.
For those living in flood-prone regions, the NWS offered a slate of safety recommendations. The message was simple: move to higher ground, heed evacuation orders, disconnect utilities if time allows, and never attempt to walk or drive through floodwaters. As little as 6 inches of fast-moving water can sweep a person off their feet, and just 12 inches can carry away most cars. Residents were reminded to avoid parking or walking near drainage ditches and to maintain extra distance from large vehicles on slick roads. The NWS also advised slowing down, using headlights, and pulling over safely if visibility became too poor to continue driving.
City and county officials ramped up their outreach efforts, encouraging residents to sign up for emergency alerts via NotifyLA.org and to prepare sandbags, review family emergency plans, and keep basic supplies on hand. The Los Angeles Department of Water & Power urged customers to report outages and subscribe to power alerts, while the LA County Public Works distributed guides on protecting homes from flood damage. The city’s fire stations offered free sandbags, and residents were encouraged to use the MyLA311 app to report storm-related issues like flooding or fallen trees.
Despite the Presidents Day holiday, the mood across Los Angeles was anything but celebratory. Garbage bins floated down the streets of Hollywood Hills, hazardous bluffs in the Portuguese Bend neighborhood of Rancho Palos Verdes faced increased risk of collapse, and the city’s iconic landmarks disappeared behind curtains of rain. In the mountains, snow and ice complicated travel, with authorities warning that conditions could deteriorate rapidly and that drivers should be prepared for sudden closures or detours.
The NWS also took the opportunity to clarify the differences between advisories, watches, and warnings. A flood watch, like the one issued for much of LA County, means conditions are favorable for flooding but does not guarantee it will occur. A flood warning or flash flood warning, on the other hand, means flooding is imminent or already happening, and immediate action is required. Residents were urged to stay vigilant, monitor local forecasts, and be ready to act if conditions worsened.
As the storm continued its march through Southern California, the region’s resilience was put to the test once again. With more rain and snow in the forecast through midweek, officials and residents alike faced a familiar but formidable challenge: weathering nature’s fury while keeping communities safe and connected.