Insect Alert For

Corn Earworm

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

Low corn earworm migration risks continue through the extended portion of the forecast as a persistent south to southwest flow from source regions in Texas and the mid-south remains in place. The risk area tonight into Friday morning is focused from eastern Kansas and southeast Nebraska eastward through Iowa, Missouri, Illinois, and Indiana as a weak cool front works south through the I-80 corridor tonight into tomorrow. By late Friday night into Saturday, Low risks shift back to the Plains as southerly winds do appear to focus back west as the cold front turns into a warm front in that area. By the weekend and early next week, another cold front is predicted to push southeast through much, if not all, of the corn growing region so Low risks abound from the Plains as far east as Ohio and north into the upper Midwest and Great Lakes region. Despite persistent risks, the overall risk is kept in the Low category as moths are becoming more attracted to further advanced crops in the mid-south and also moth counts in some areas of the source region have decreased. Growers all across the risk area should continue to monitor their traps as some isolated moth flights are still likely in the next five days.