Insect Alert For

Corn Earworm

Risk Level:
Low
Affected Area:
Full page
Alert Details

An active southwest flow weather pattern is predicted to remain in place across the central part of the United States into next week. The result will be continued opportunities for primarily isolated corn earworm moth flights into especially the southern and central reaches of the corn-growing region. Trap counts remain below average across source regions in the mid-south and southern states, and crop stages are not at critical stages of growth as of yet where damage could occur. As a result, only Low risks are in the forecast for the next five days despite a somewhat favorable weather pattern for migration. A weak cool front will continue to move through especially the central portion of the corn-growing region today and tonight before stalling and moving back north slightly this weekend. Low risks are in place southeast of this front tonight, mainly east of I-35 in Kansas and south of US 36 and I-72 in Missouri and Illinois, and US 24 in Indiana. Low risks return further west across far eastern Nebraska, and Iowa in addition to Missouri, Illinois, and Indiana tomorrow night as southerly winds increase and the front moves back north. In the extended period (late in the weekend and early next week), the most favored location for corn earworm migration remains across the southeast quarter of the corn-growing region, or from east of I-35 and generally south of I-94 in southern Wisconsin and Michigan as a front meanders through the region.