A tornado touched down in the town of Scotts Valley on Dec. 14, as San Francisco issues first-ever tornado warning ...

A rare, violent tornado hit parts of Northern California causing injuries and damaging homes and businesses. NBC News' Dana ...

In San Francisco, a storm damaged trees and roofs and prompted a tornado warning, which was a first for a city that has not ...

A very soggy start to the weekend really upped our rain and snow totals. Parts of the Sierra saw more than three feet of snow.

And the first Tornado Warning for San Francisco. Daytime highs will be mostly in the high 50s to low 60s on the coast, low to high 50s around the bay, and in the low 50s to high 60s inland. Overnight ...