The National Weather Service Milwaukee/Sullivan Weather Forecast Office issued the following advisory and forecast as of Sunday at 3:30 p.m.

Dangerously Cold Wind Chills: Tonight Through Monday Morning

• Winds to 40 MPH tonight will also bring wind chills in the negative 20s.
  • A Cold Weather Advisory is in effect from 3 AM CST to 12 PM CST Monday.
  • Areas in southwestern Wisconsin may see wind chills drop as low as negative 30 degrees for a brief period overnight, but coverage is expected to be isolated.
• Although conditions improve into Monday afternoon as winds diminish to gusts of 25 mph, expect wind chills to remain in the negative teens throughout Monday afternoon and overnight through Tuesday morning.