Insect Alert For

Corn Earworm

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Alert Details

An active corn-growing region weather pattern may lead to a late growing season corn earworm moth flight into some portions of the area by early next week. Low pressure continues to develop and meander in the northern Plains region while high pressure is slowly drifting off to the east into the eastern corn-growing region. Southerly winds are becoming persistent west of the high pressure, and Low corn earworm migration risks are predicted tonight into tomorrow generally along/west of Lake Michigan and the I-57 corridor in northeast Illinois. Low risks continue in the forecast tomorrow night into Saturday across virtually the same area but also further east into Indiana and southwest lower Michigan. Finally, as the cold front begins to make more of a push southeast, a classic setup for migration is expected and Moderate risks are in the forecast from eastern Iowa into far southeast Minnesota, Wisconsin, northern Illinois, northern Indiana, far northwest Ohio, and into lower Michigan Saturday night into Sunday. Low risks continue in the forecast Sunday night into Monday especially across the southern Great Lakes region. Growers with crops still at susceptible stages to corn earworm damage, especially processing growers in Wisconsin and Illinois but also potentially as far west as Minnesota and also fresh market growers in this same area but also into lower Michigan should monitor traps and scout fields until harvest.