A low pressure system and attendant warm/cold fronts will be moving through much of the corn-growing region around mid-late week this week. Ahead of the main cold front, a period of south to southwest winds originating from a favorable source region mainly south of St. Louis, Missouri and on south into the mid-south may allow some scattered corn earworm moth flights to make it north into especially the southern Great Lakes region by mid-week. Low risks are in place tomorrow night into Wednesday morning from northern Kansas and Missouri north into eastern South Dakota, Minnesota, and western Wisconsin and points further south mainly to the west of the Mississippi River. Moderate risks then enter the forecast Wednesday night into Thursday morning across northern/central Illinois, southeast Wisconsin, northern Indiana, and southwest lower Michigan with Low risks extending from roughly the I-35 corridor east into Ohio and far southwest Ontario, Canada. No additional migration risks are predicted after midday Thursday as the cold front continues moving off to the southeast and northwest flow takes hold again.