Insect Alert For

Corn Earworm

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

An active south to southwest wind flow pattern is expected to result in scattered corn earworm moth flights into the corn-growing region over the next several days. Moderate risks are in place tonight into Friday morning across portions of Kansas, Nebraska, Iowa, Minnesota, Missouri, Wisconsin, and Illinois as a cold front approaches from the Plains. A new low pressure system is expected to develop in southern Canada tonight into Friday and should actually result in the front retrograding, or moving back west, so Moderate migration risks are also shifted west and include portions of Kansas, Nebraska, South Dakota, Minnesota, Iowa, Missouri, Wisconsin, and Illinois Friday night into Saturday morning. Low risks by this time extend into the southern Great Lakes and eastern Midwest as well due to high pressure shifting east into the mid-Atlantic region. Moderate risks remain in the forecast for the Saturday night into Sunday morning time frame as the cold front moves back southeast. Fields from northeast Kansas into Missouri, eastern Iowa, Wisconsin, Illinois, southwest Michigan, Indiana, and northwest Kentucky all stand a chance of Moderate corn earworm flights at this time. Low risks then focus over the eastern Midwest and southern Great Lakes region early next week as the cold front pushes out of the corn-growing region.