Storm to bring windy and cold weather this weekend 01:25. A cold front moving down the coast is expected to bring rain and possible thunderstorms to Southern California over the weekend.

The second piece of the storm could bring .50 to 1 inch of rain to Southern California. Weather officials warn there is a 10 to 20% chance of significant flooding and burn scar debris flows.

The storm is expected to dump 1 to 2 inches of rain along the coast and up to 4 inches in the valleys at rates that could cause problems. Some roads will be closed starting Wednesday.