We've been talking about this for days, so let's get it's own thread here. Snow looks likely for much of the Dakota's, eastern NE, Minnesota, Iowa, WI, and N. Illinois Sunday into Monday.
From Sunday into Sunday night, the 05.00z models continue to show
that a short wave trough will eject out of the Central and
Northern Plains. While the surface low is filling, the 800 to
500 mb frontogenesis will still tighten along and south of the
Interstate 94 corridor. Soundings indicate that the Dendritic
Growth Zone could potentially deepen as much as 250 mb at times.
This will increase the snow to liquid ratios into the 12-18 to 1.
Being this far out, it is surprising how tight the GEFS QPF
clustering is for this system. They have QPF ranging from 2 to 6
tenths of an inch. With the exception of Clark and Taylor
counties, thinking that much of the area will likely see snow
totals ranging from 3 to 7 inches. The highest snow totals
continue to look like they will occur west of the Mississippi
River. Like the previous system earlier this week, the rates
during the day will greatly effect the impacts during the day
Sunday. When the rates are high, the snow will accumulate on the
roads and then melt when the rates are less. Meanwhile, on Sunday
night as the roads cools, the snow will accumulate. This may be
when the greatest impacts will occur.