Insect Alert For

Corn Earworm

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Alert Details

A cold front is expected to push through much of the corn-growing region by this weekend. Ahead of the front, a fairly narrow corridor of southerly winds is likely, and may lead to some isolated corn earworm moth flights from mid-south and even southern corn-growing region source regions. Low risks are predicted tonight into tomorrow mainly across the Plains states but potentially as far east as near the I-35 corridor in Minnesota, central and western Iowa, and far northwest Missouri. Low risks continue in the forecast tomorrow night into Friday morning further east as the front begins moving southeast, with fields from eastern Nebraska into northern Missouri, Iowa, Minnesota, Wisconsin, and portions of Illinois at risk. Little to no migration risk is predicted after Friday, but growers with crops at sensitive stages to potential corn earworm damage, especially processing and fresh market growers, are encouraged to continue trapping and scouting efforts until harvest.