A fast-moving storm system is sweeping into the Bay Area and Central Coast, bringing heavy rain, strong winds and the possibility of thunderstorms, according to the National Weather Service. A wind advisory is in effect from 8 a.

A powerful storm system is forecast to sweep across the region this weekend. Possible impacts include tornadoes, damaging winds, hail and heavy rain.

The first and strongest of three storms set to hit Sonoma County this week is rolling in Wednesday, bringing wind gusts up to 55 mph, rising creeks and streams, and a slight chance of thunderstorms.