The U.S. National Weather Service has issued a tornado warning for parts of Northern California. The NWS told people to "take shelter now." Video above from Scotts Valley tornado. The warning was for people in northern central Tehamd County and southern central Shasta Count and is in effect until 6 p.

The National Weather Service issued the warning for northern Tehema County and southern central Shasta County, but it expired at 6 p.m. The agency then issued a special weather statement cautioning residents in Shingletown, Lyonsville, Paynes Creek and Manton about a strong thunderstorm that would impact the areas through 7 p.m.

A warning covering an area with about 2,200 residents told people to take shelter because flying debris was expected.