A third day of an atmospheric river storm has inundated Northern California and the Bay Area, prompting a series of warnings and advisories about local flooding.The National Weather Service issued a flood warning in Sonoma County for the Russian River at Johnsons Beach in Guerneville from 2 p.

An atmospheric river storm hit California over the weekend, dropping heavy rain on at least one part of San Luis Obispo County. The Nationa Weather Service shared a notice Saturday evening showing 24-hour rainfall totals for the storm.

The first atmospheric river storm of the winter rainy season slammed into California on Wednesday. Driven by a powerful “bomb cyclone” off British Columbia, it brought heavy rains to Sonoma and Marin counties, dumping more than 6 inches in the hills above Guerneville by mid-afternoon.