An upper level disturbance rotating around an area of low pressure located across the Great Lakes will bring light snow to the area today. One to three inches of snow is expected across northern Missouri and west central Illinois. Lesser snowfall amounts can be expected further southeast. A winter weather advisory is in effect today across northeast and central Missouri as well as west central Illinois, north and west of St Louis, where hazardous travel conditions are expected.   (Please visit http://weather.gov/lsx for more information.)