Insect Alert For

Corn Earworm

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Alert Details

Low corn earworm migration risks are in the forecast tonight into tomorrow morning across northern Iowa, Minnesota, western Wisconsin, and northwest Illinois as southerly flow increases to the east of a cold front moving through the Plains. Some isolated moth flights will be possible into this area overnight tonight. Low risks then follow the front east into the southern Great Lakes region tomorrow night into Saturday morning, with isolated flights possible in eastern Illinois, southern lower Michigan, northern Indiana, northern Ohio, and southwest Ontario, Canada. It appears the break in migration risks will be short-lived as yet another cold front is likely to begin moving into the Plains states late in the weekend. Low risks are back in the forecast across northern Iowa and Minnesota as well as far western Wisconsin Sunday night into Monday morning, and then mainly across northern Iowa and Minnesota as a new low pressure area may develop across the central Plains by early next week. Processing and fresh market growers should continue monitoring traps and scout fields, especially with any remaining crops at a susceptible stage of damage.