A very stagnant weather pattern is expected to remain in place across much of the corn-growing region for at least the first half to two-thirds of this week. High pressure is predicted to remain anchored over the far southeast corn-growing and southern Appalachian region with low pressure traversing from west to east across southern Canada. The result in between these two weather features will be persistent south to southwest winds and rather hot/humid conditions, which is ideal for corn earworm migration. Moderate corn earworm migration risks are in the forecast for at least the next two nights, and may be extended into later this week, as well, once confidence increases on any potential pattern change by that time. The Moderate risk area covers portions of Kansas, Nebraska, Missouri, Iowa, Minnesota, Wisconsin, Illinois, Indiana, and a small portion of southwest lower Michigan from tonight into at least Wednesday morning. Low risks extend north to near Lake Superior and east as far as roughly the I-75 corridor in western Ohio with some expansion east by later in the week. Growers with crops at a susceptible stage to corn earworm damage, especially earliest planted and more southern-based field corn, sweet corn, and other fresh market/garden produce should watch closely for corn earworms in the coming week or so as new migrations are probable given a longer-duration favorable weather pattern.