Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

A predominantly northwest to southeast flow is expected in the weather pattern over the course of the next week. The primary result will be limited opportunities for corn earworm migration events to occur into the corn-growing region in the next week. Low risks are in place tonight into Wednesday morning mainly east of a St. Louis, Missouri to Milwaukee, Wisconsin line as a cold front moves east and mainly light southerly to southwesterly winds in advance of the front pose an isolated threat for moth flights. No risk is predicted Wednesday night into Thursday, and only Low risks are forecast for the extended period mainly across the Plains states where southerly winds in advance of low pressure to the east of the Rocky Mountains remain persistent. Despite the lack of more widespread or higher migration risks, growers across the corn-growing region should monitor trap counts and their fields as the second generation is likely to begin appearing within the next week or so in many areas.