LOS ANGELES (KABC) -- Storm-triggered mudflows, heavy rain and snow prompted several road closures across Southern California after the region saw its first rain of the year.[br /][br /]On Sunday, snow and icy conditions prompted the full closure of a portion of the 5 Freeway through the Grapevine overnight. The closure was in effect from State Route 126 to the Kern County line due to hazardous road conditions, according to the California Highway Patrol.[br /][br /]One lane reopened around 11 a.m. Monday, and the section of the freeway later fully reopened.[br /][br /][media ID="15841287[br /]" /][br /]Topanga Canyon Boulevard was shut down in both directions between Pacific Coast Highway and Grand View Drive Sunday evening. It remains closed indefinitely after the storm created a muddy mess.[br /][br /]Several inches of mud cover sections of the canyon road. Caltrans, L.A. County Public Works and other utility crews are working on clearing the road and making repairs.[br /][br /]In Malibu, schools were closed Monday as a precaution because of difficult driving conditions.[br /][br /]Getting around from Malibu to the San Fernando Valley is going take longer because of the Topanga Canyon closure, and the possibility of mud and debris flow on the other canyon roads.[br /][br /]The Cajon Pass was also impacted by the winter storm. The roadway saw snow overnight, but it remained open to drivers.[br /][br /]The rain also triggered mudslides in Woodland Hills Sunday, causing several cars to become stuck in the mud along Alhama Drive. Los Angeles Fire Department responded to a total of four cars. No injuries were reported.[br /][br /][media ID="15839815" /][br /]