A low pressure system is currently moving north in the Midwest. It is producing heavy snow and blizzard conditions in the Plains.
The Storm Prediction Center has issued an image on the matter.
Above, we can see the low pressure moving up through Nebraska into Iowa. The green arrow means warm, moist air is moving into the area outlined, making a very nice area for heavy snow. In the pink outline, blizzard conditions are expected, with snowfall rates of 1” an hour likely. And in the blue area, 2” an hour of snow is possible. That is incredibly fast accumulation.
Below is an image from the Weather Channel.
The heaviest rain will fall in the Southeast back into the Northeast US. The most snow will occur in the Upper Midwest through the Upper Plains. The worst-hit areas can expect 6-12” of snow, with localized higher amounts.
Updates as they come, here, at The Weather Centre.