Insect Alert For

Corn Earworm

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

A frontal boundary will be pushing southeast through the corn-growing region over the next 2-3 days. To the southeast of this front, south to southwest winds are likely to result in scattered to widespread precipitation areas as moisture increases but they may also provide the corridor for migrating corn earworm moths, as well. Moderate migration risks are predicted tonight into tomorrow morning across northern Missouri, southeastern and eastern Iowa, far southeast Minnesota, southern Wisconsin, central and northern Illinois, northwest Indiana, and southwest lower Michigan. Low risks extend to near the I-75 corridor in eastern lower Michigan and western Ohio. Moderate risks continue in the forecast tomorrow night into Thursday morning especially from eastern Illinois into Indiana, Ohio, southeast lower Michigan, and southern Ontario, Canada as the front moves slowly southeast. No additional risks are predicted in association with this front after midday Thursday, but Low risks return the Plains and western/central corn-growing region by Friday night into Saturday as a quick-moving low pressure system develops in the Plains and moves east. Low risks are in the forecast through Sunday morning mainly west of Lake Michigan in association with this system.