A cold front will push through the corn-growing region over the next 24-36 hours. The overall migration risk level is Low given how much precipitation contamination is expected in the risk area but also what has or is occurring in the source region further south, so only isolated flights are expected tonight into tomorrow from far eastern Kansas into Missouri, southern Iowa, central and southern Illinois, southwest Indiana, and western Kentucky. Northwest flow locks back in after this front passes for the rest of the week and likely into the holiday weekend, as well, so little to no additional risks are predicted after tomorrow.