Authorities say winter weather is partly to blame for a fatal crash in central Iowa last night. Story County deputies say 39-year-old Roxanne Knowles of Ames lost control of her pickup truck on a snow-slicked road near Story City, crossed the center line, and collided with a vehicle driven by 46-year-old Keith Reierson of Story City. Reierson was killed. Knowles was treated and released. The accident is still under investigation. Charges are pending.