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.

The wettest of the two storm systems of the week in the Sacramento Valley and in the Sierra arrived on Friday with the main event expected to arrive Friday night.

Inclement weather has plagued areas of the U.S. in the first half of the weekend, with dangerous conditions including heavy snow, a major ice storm and unsual tornado activity

Tornado alley it's not, but a section of California was hit Saturday with a rare tornado that has been blamed for injuring five and flipping vehicles as a storm moved across the state.

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.