A rather active but typical weather pattern for this time of year is predicted across much of the corn-growing region in the next five days. A persistent south to southwest wind in between low pressure in the High Plains and high pressure in the eastern Midwest is expected to envelop much of the Plains and portions of the Midwest through the period, and these winds may allow some isolated moth flights to occur. The source region (western Texas into Oklahoma) is not optimal for larger scale flights, but some moths may fly north into Kansas and Nebraska later tonight into early tomorrow morning, and then the risk spreads northeast into South Dakota, southwest Minnesota, western Iowa, and western Missouri tomorrow night into Thursday morning. By late week into the weekend, southerly winds should continue to expand to the north and east even further with fields in Minnesota, Wisconsin, Michigan, Illinois, Indiana, and western Ohio also at risk.