Caltrans is alerting the public that the National Weather Service is predicting rain and snow in Southern California this weekend. Snow elevations will possibly drop to the 4,000-foot level, which will affect all mountain regions in Riverside and San Bernardino counties. Road conditions will be icy in areas affected by snow.

Caltrans maintenance crews are preparing state highways for rain and snow. The mountain and pass regions will be preparing the highway in advance of the storm with deicing agents. Snow plows and other equipment are ready, and staff will be working 24/7 during the storm event.

Motorists are advised to avoid travel during storm events and to slow down. Chains will be required in mountain areas. Remember to bring chains even if it is not snowing due to sudden weather changes.

Winter driving tips can be found at Chain control information can be found at

Mountain regions typically experience rock fall activity during and after storm events. For emergency information in Riverside County, visit