currently in effect for parts of five states with a threat of heavy snow, freezing rain and sleet for the northern plains and upper midwest. this was the scene over the weekend in wyoming after a snow swept through the state causing more than 50 accidents. let me bring in nbc meteorologist bill karins. >> this is storm number two. now we're heading a little further north and this will be primarily a snowstorm. over the weekend that ice was really nasty stuff, especially oklahoma hit by far the hardest. on the weather map heading into the winter season, the green is the rain. the pinker shades, that's either sleet or freezing rain. the white is all snow. it is nice and simple when it is all snow like we have in omaha right here. you have a coating, it gets a little slippery. when you get the ice out there, then the snow on top of that is when you really start skating on the roads. that's going to be happening across iowa later today and tonight heading towards minneapolis. through today the heavy snow breaks out south dakota, minnesota. the evening ride home in areas like sioux falls, sioux city,