National Weather Service United States Department of Commerce

A winter storm will bring the potential for heavy snow to parts of southeast MO and southwest IL Wednesday night and Thursday with lesser amounts northwestward. There is still some uncertainty as to the exact track of the storm system and hence the total snow amounts. Be prepared for the potential for hazardous driving conditions beginning Wednesday night across east central and southeast MO and southern IL.
Temperatures will continue well below average through Thursday night. A winter storm will bring snow to east central and southeast MO and southwest IL Wednesday night and Thursday.
Here is a glimpse at the recent snowfall from the last 48 hours, primarily on Monday and Monday evening. The snowfall map on the left shows snowfall amounts received from cooperative observers. There were spots that had slightly higher amounts that are not depicted in this lower resolution plot. The recent GOES-East Cloud Phase Distinction Satellite image on the right shows the snow cover quite nicely as depicted in green, with higher clouds in orange, and low clouds in white.
An unseasonably cold air mass and an active pattern resulted in multiple broken and tied records over the last several days. Additional snow could fall Thursday, possibly adding to the growing list.