An unseasonably cold low-pressure system that formed in the Gulf of Alaska is off the coast of Northern California Monday morning and poised to move across the Golden State this afternoon, the National Weather Service said.

California issued its earliest snow advisory in the past 20 years with an alert early this week for residents in the Sierra Nevada, according to the National Weather Service. From Sunday to Monday ...

An unusual cold September air mass is sweeping through the Sierra Nevada, bringing scattered snow showers to the region. The National Weather Service issued a winter weather advisory Monday for elevations above 8,