NEW: State of emergency declared in Louisiana because of cold and ice NEW: Two dead in weather-related Louisiana traffic accidents, state police say "If you don't need to be on the roads, stay off them," Houston official says Many South Texas and southern Louisiana schools closed How is winter weather affecting you? Send CNN iReport your photos and video of ice, snow and sleet if you can do so safely. Houston (CNN) -- After pelting parts of Texas with snow and ice, a rare deep South winter storm moved into Louisiana on Friday, icing roads and causing at least two deaths. Louisiana State Police closed I-10 at the Texas border after numerous traffic accidents blamed on ice. The interstate closure was one of many hampering travel in the state Friday afternoon as state police warned of deteriorating conditions. They warned residents to avoid driving unless it was absolutely necessary. State police said two people died in traffic accidents attributed to the weather. ...