‘Pineapple Express’ Forecast To Deliver Three Days Of Rain To Bay Area

A warm, wet storm known as a “pineapple express” chugged into the San Francisco Bay Area Tuesday, with the first rain falling in the early morning in the South Bay. The system driven by an atmospheric river that’s pulling moisture from the subtropics is centered in Central and Southern California, but its northern edge is forecast to bring rain to the Bay Area Tuesday through Thursday. San Francisco, Livermore and Concord are expected to record 1 to 1.5 inches across the three-day period; San Rafael and Half Moon Bay 1.5 to 2 inches; and Santa Cruz 2 to 3 inches, according to the National Weather Service.