In early February 2024, California experienced extreme weather known as an atmospheric river event. This brought heavy rainfall, floods on roads, and power outages, affecting almost 850,000 people. The winds were very strong, reaching speeds of more than 80 mph in mountainous areas and 60 mph in the San Francisco Bay Area, similar to those of a hurricane. Streets in the San Francisco Bay Area flooded, trees fell, and power lines were disrupted.

Emergency crews in San Jose assisted flood-stranded residents and protected a threatened homeless camp. Santa Barbara residents prepared for a storm with supplies, leading to canceled classes for safety. Ventura experienced flooded freeways and stranded vehicles, with more than 847,000 statewide power outages. The Storm Prediction Center warned of tornadoes in the Bay Area, disrupting San Francisco International Airport. The “”Pineapple Express”” storm brought heavy snow to Palisades Tahoe and Sierra Nevada, while Southern California faced significant flooding risk from the system.