Two systems are expected to produce rain, snow, and even a few storms across parts of the country through the weekend.
The first system will move from the Central/Southern Plains today, through the Great Lakes Saturday, and finally into Canada to end the weekend. Rain will be the main precipitation mode to the south and east of this system with a few storms possible near a front that will be draped to the south from the center and accumulating snow is expected on the west and north part of this system. Generally, snow amounts in the 2-4 inch range will be anticipated from southeast NE northeastward through northern lower MI with over 6 inches possible in a few spots, especially in lower MI.
The second system will originate in the Pacific Northwest today, make it down to the Southern Plains by Saturday overnight/early Sunday, and then through the Southeast Sunday evening and overnight. This system will be very similar to the first with rain, snow, and a few storm all expected in the same regions. Accumulating snows will occur in the mountainous regions in the west today and Saturday, then head into eastern CO/southwest KS Saturday evening/overnight, OK, and northern AR Sunday and Sunday evening, and as far east as western TN and southwest KY by Sunday overnight.
A third system comes into the Pacific Northwest Saturday overnight and Sunday producing more rain and snow in that region.