Insect Alert For

Corn Earworm

Risk Level:
Moderate Risk
Affected Area:
Full page
Alert Details

A continued active weather pattern may allow corn earworm moth flights to occur into portions of the corn-growing region in the next week. A favorable migration setup is in place for tonight into Tuesday morning especially across portions of Kansas, northwest Missouri, western Iowa, far southwest Minnesota, southern South Dakota, and Nebraska as southerly winds originating from source regions in northern Texas and Oklahoma blow north and likely encounter at least scattered precipitation. A Moderate risk is in place across the aforementioned area with Low risks as far north as central Minnesota and Wisconsin and primarily west of Lake Michigan and I-57 in eastern Illinois. Low risks continue mainly southeast of a line from Dodge City, Kansas to Green Bay, Wisconsin for Tuesday night into Wednesday as a cold front advances southeast through the corn-growing region. Southwesterly flow is not expected to be as favorable during this time, but nonetheless Low risks for isolated moth flights are in place. A Low risk is also present starting Thursday night and continuing into the weekend as the next low pressure system and southerly winds return to primarily the western portions of the corn-growing region.