Article Photos: UPDATE: Oklahoma City Public Schools cancels evening activities, OCU closing at 3 p.m. due to winter weather

Traffic backs up on Lindsey Street as students head to class in the rain on the campus of the University of Oklahoma (OU) on Tuesday, Feb. 12, 2013 in Norman, Okla. Photo by Steve Sisney, The Oklahoman

Traffic backs up on Lindsey Street as students head to class in the rain on the campus of the University of Oklahoma (OU) on Tuesday, Feb. 12, 2013 in Norman, Okla. Photo by Steve Sisney, The Oklahoman