Another major winter storm is taking aim on Missouri and Illinois. The storm will intensify and move northeastward through southeast Missouri and southern Illinois. North and west of the track of the low pressure system, heavy snow is expected tonight and Tuesday. Additional lighter snowfall will occur over a broader region Tuesday night into Wednesday. The heaviest snow for our forecast area is expected across central and northeast Missouri as well as west central Illinois, including Columbia and Quincy. Winter Storm Warnings and Winter Weather Advisories are in effect for areas north and west of the St Louis metro area where hazardous travel conditions are expected.   (Please visit for more information.)