A cold winter storm battered the San Diego region Tuesday, hitting the county with heavy rain and pouring snow in the mountain areas. The storm was active Tuesday morning, bringing with it widespread rain during the morning commute. The subsequent slick roads led to several crashes on San Diego’s freeways, with some involving big rigs. According to the California Highway Patrol, there were 156 vehicle collisions on San Diego roadways from midnight to 9:59 a.m. this morning. The CHP says there are about 140 crashes reported on what they would call a normal “good weather” day.