Just had a thunderstorm form up overhead, drop some heavy rain and pea-sized hail, and move off to the northeast. Five minutes later, it drops a (tiny) funnel cloud tornado between Tracy and French Camp, caught on live TV.
EDIT: From the National Weather Service: Tornado briefly touched down southwest of Stockton on west Howard Road. Damage reported includes destruction of a 40 ft outbuilding, roof damage to other structures, and multiple power lines down.
Changed the original post to refer to a tornado instead of a funnel cloud, since it did touch down.