Snow will slow down Monday morning commute

A Winter Weather Advisory has been issued for all of northern Illinois and southern Wisconsin beginning Sunday evening and lasting through Monday evening.

The air mass over the Stateline is pretty dry with dew points in the low single digits.  But those dew points should quickly rise allowing the snow to reach the surface after 8pm.  The snow will begin light and then pick up in intensity during the overnight and early Monday morning.

Highest impact to travel will occur late Sunday night into Monday morning.  So please allow for extra time during the morning commute.  As the snowfall rate increases, roads will become snow covered and slick with road surface temperatures falling below freezing allowing the snow to accumulate.

Most of the accumulating snow will be done before Noon Monday, with only a few flurries expected during the remainder of the afternoon and evening.
 
Snowfall totals by Monday morning should be between 3" and 4", with another inch or two accumulating during the day Monday.  Overall 3" to 6" of snow should occur for northern Illinois and southern Wisconsin.  Winds will increase Monday, but blowing and drifting snow shouldn't be a major issue.  Road conditions will remain slick through Monday evening.