Active weather is expected across a good chunk of the country through the weekend mainly thanks to a trough in the west and features developing ahead of it. Rain, snow, ice, and severe weather are anticipated with this system.
Initially, today scattered rain and snow showers will be going on in the western third of the country with precipitation becoming more widespread tonight and into the weekend as a low-pressure system gets more organized and gains strength in the Central Plains, and moves northeast through the Great Lakes on Saturday. Snow accumulations will be possible tonight between I-94 and I-90 in southern MT to I-80 in WY, and southwest SD, Saturday across the rest of SD, and parts of MN, and into western UP of MI early Sunday. A transition zone of mixed precipitation or ice on Saturday and Saturday night from central NE to western UP of MI.
Finally, widespread showers and storms are expected in the vicinity of and ahead of the low from eastern NE to the Great Lakes on Saturday and Saturday night, becoming more scattered on Sunday mainly along the cold front, then robust development is possible Sunday evening and overnight near the same front that will be very slow-moving. Heavy rainfall will be possible with any of this activity, but some storms could become severe on Saturday in much of IA, southeast MN, and southwest WI, and on Sunday evening and overnight the severe threat could be from eastern OK to western OH.