Insect Alert For

Corn Earworm

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

Isolated corn earworm moth flights will remain possible through the weekend and into the middle portion of next week as a rather stagnant weather pattern remains in place especially west of Lake Michigan. Low pressure systems will continue to meander and develop in the far western Plains with high pressure stretching from the Tennessee River valley into the southeastern United States. The subsequent south to southwest wind flow in between these two pressure centers could lead to isolated moth flights on a nightly basis across the western and central corn-growing region. Low risks are predicted tonight into tomorrow morning mainly south of I-90 east into far southwest lower Michigan and Indiana. As a weak cool front moves southwest from the Great Lakes late tomorrow into tomorrow night, the risk area tomorrow night is shifted back into the Plains ahead of the next organizing low pressure system. As we move into the late weekend and early week period, Low risks once again envelop a large portion of the corn-growing region especially west of Lake Michigan. There is a chance that a more favorable mid-south source region could be tapped by the middle of next week which may result in a higher probability of moth flights into a portion of the corn-growing region. Given the time of year and stage of most crops, however, only Low risks remain in the forecast at this time.