Heaviest rains are expected to hit at 4:00 AM tomorrow morning. Southerly winds of 20 mph with local gusts to over 30 mph can be expected.
As much as 15 inches of rain could fall in the next 16 days in Northern California.
http://www.ksbw.com/news/california-braces-for-series-of-el-nino-storms/37258078