Insect Alert For

Corn Earworm

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

The active weather pattern is expected to continue through the next five days for much of the Corn Belt. The result will be a continued risk of corn earworm migration for much of the Midwest as persistent south to southwest winds interact with frontal boundaries and associated precipitation events. A Moderate risk remains in place for this evening into Thursday morning from northern Oklahoma and northwest Arkansas northeast into eastern Kansas, Missouri, far southeast Iowa, central Illinois, northern Indiana, and into southern Michigan as southwest winds originating from source regions in northern Texas and southern Oklahoma blow northeast. Precipitation is expected to be widespread along a southeastward advancing cold front and could result in insect drop zones. Low risks extend east and south of the Moderate risk area into the Ohio River valley and eastern Midwest. For the remainder of the five day period, Low insect migration risks are predicted nightly as persistent south to southwest winds blow north and come in contact with a frontal boundary and its associated precipitation. The most concentrated risk area through this period is across Kansas, southern Nebraska, southern Iowa, and Missouri, but risks extend as far east as Ohio as well especially from Friday evening into Saturday morning.