Insect Alert For

Corn Earworm

Risk Level:
No Risk
Affected Area:
No risk Full page
Alert Details

Corn earworm migration risks are in the Low category tomorrow night into Wednesday mainly west of the US 65 corridor in the Plains and also into western Minnesota, Iowa, and Missouri as southerly winds return behind a cold front passage further to the east today. These Low risks expand east through time as the week goes on, reach near the Mississippi River by Thursday morning and then Lake Michigan and into Illinois by late week and into next weekend. There is some discrepancies as we reach late week in how quickly high pressure in the eastern corn-growing region moves out, or doesn’t, and also how strong a potential late week system will ultimately be. For these reasons, a broad-brushed Low risk is in place and further refinement is likely to occur as the week goes on. The weather pattern this past weekend was favorable for potential migration events into the corn-growing region, so growers are encouraged to check traps and scout fields as new moths may have arrived in the past 2-3 days.