A powerful atmospheric river storm that drenched the North Bay for two days in a row and set rainfall records moved south Friday, bringing steady rain starting around mid-day that was expected to soak the entire Bay Area until Saturday morning.

Amid the relentless rain brought by an atmospheric river soaking Northern California, flash flood warnings were issued Friday afternoon in portions of the Bay Area where instances of flooding deemed "life-threatening" were occurring. The National Weather ...

An atmospheric river has taken hold of the Bay Area, and weather experts are still unsure when it will pass through the region.

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.

The atmospheric river storm that has soaked the North Bay and inundated the northern part of the state was moving south across the rest of the Bay Area Friday.

Motorists are urged to stay off San Francisco roads Friday afternoon as the entire city is under a flash flood warning.

San Francisco, San Mateo, Alameda, and Contra Costa counties are under flash flood warnings Friday afternoon as rain continues to fall over the Bay Area.

The National Weather Service issued a flash flood warning on Friday afternoon for San Francisco as heavy downpours dropped inches of rain on the city. The warning will remain in effect from 12:43 p.m.