A new storm system developing on the leeward side of the Colorado Rockies as well as a separate, slow-moving disturbance will aid in formation of snow Sunday afternoon through Tuesday night across the Northern Plains and Upper Midwest. Gusty winds will also impact Nebraska into Iowa, gusting up to 35-45 mph, peaking on Monday.
On Sunday afternoon into the evening, snow will break out across northern Colorado, eastern Wyoming and Montana, northwestern Nebraska, and the western Dakotas. Then overnight, that snow will expand into the central and eastern Dakota. Snow may also affect eastern portions of Nebraska and in northern Kansas on the backside of the low pressure depending on whether the freezing temperatures work in.
Then on Monday, a light to moderate snow will very slowly moving east and will mainly affect the Dakotas and Nebraska throughout the day as a new disturbance takes and place of the departing low pressure. Overnight Monday, the snow will continue to trek eastward, impacting the eastern Dakotas, eastern Nebraska, and western Minnesota and Iowa. Snow showers may also work into eastern Kansas and western Missouri, but temperatures may be too warm enough, meaning that rain will fall instead of snow. There will also be quick-moving batch of snow that may move into western North Dakota, but that area of snow will dissipate by late-Tuesday morning.
As we get into Tuesday, the snow will depart the Northern Plains while primarily impacting the Upper Midwest. This includes much of Minnesota and Iowa. Snow may also sneak into western Wisconsin by the end of the day before all of the precipitation fizzles out overnight.
Here’s our snowfall forecast: