A storm system over east central Missouri will lift into the Ohio Valley and produce snow over much of Iowa through Wednesday morning. Moderate to heavy snowfall will occur over the southeast half of Iowa and parts of Missouri and Illinois. Strong north winds will cause blowing snow and reduced visibility in these areas, making travel hazardous. Winter storm warnings are posted for a large part of the southeast half of Iowa with winter weather advisories from southwest into parts of north central and northeast Iowa. The snow will end on Wednesday, with cool and dry weather expected for the remainder of the week.