Insect Alert For

Corn Earworm

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

As a cold front moves southeast into the southeastern corn-growing region by tomorrow, corn earworm migration risks are expected to follow the front and focus mainly along/south of the I-70 and I-80 corridors in the next 24 hours. Low migration risks are predicted generally from central and southeast Kansas east across Missouri and into far southeast Iowa, Illinois, Indiana, Kentucky, and Ohio. Northwest flow then takes over briefly before the pattern reloads for early next week. Southerly winds are expected across the Plains states by Sunday, and a gradual eastward spread is then expected early next week before another cold front passage at that time. Low migration risks are back in the forecast by Sunday into Sunday night across the Plains, then spreading east into the heart of the corn-growing region generally west of Lake Michigan by Monday into Tuesday. Growers are encouraged to monitor traps and scout fields as new migrants are probable to show up within the next week, if not already in some places.