Temperatures in the Sacramento Valley are expected to warm, too, after a high of 51 degrees expected Monday and an overnight low of 44 degrees into Tuesday. Fog is likely to return to Valley spots in the mornings with temperatures ranging from the upper 50s during the day to the low 40s at night.

A tornado touched down in the Northern California town of Scotts Valley near Santa Cruz Saturday afternoon, flipping cars and knocking down power lines, according to authorities.