A cold winter storm that brought overnight rain and snow to Southern California had mostly cleared out by Tuesday morning but still presented a chance of brief showers and thunderstorms throughout the day, forecasters said. Parts of Los Angeles County received more than half an inch of rain late Monday, including the Puddingstone Reservoir in San Dimas, which received 0.57 inch, and the San Gabriel Dam in Azusa, which received 0.51 inch.