Light snow showers currently west of I-29 will track southeastwards
through this afternoon. Brief reductions in visibility down to a
mile or less and very light snow accumulations from a trace to a
tenth or two is expected.
After 4pm, a second round of scattered snow showers over central
South Dakota, ahead of an arctic cold front, will track southeast
into the Tri-State area. More intense snow showers may bring brief
visibility restrictions under one half mile, along with a rapid
accumulation of snow. While overall snow accumulations by Wednesday
morning may average a dusting to a half inch for many locations,
very narrow bands of 1 to 2 inches of snow are likely to affect a
few areas.
Strong northwest winds gusting up to 35 to 45 mph will coincide
with the snow showers for a short period Tuesday evening. The
combination of falling snow, strong wind gusts, and flash freezing
will create hazardous travel conditions this evening.
After this second round of more concentrated snow pushes southeast
of the area, gusty northwest winds will blow any snow that has
fallen across roadways, continuing reduced visibilities overnight.