Insect Alert For

Corn Earworm

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

As summer turns into autumn, the pace of weather systems across the corn-growing region is increasing as cooler air begins to infiltrate south from Canada. The majority of crops are now past critical growth stages, but some processors and fresh market growers are still active especially in the northern corn-growing region so corn earworm migration risks remain in the forecast periodically along and ahead of each subsequent cold front passage. Low risks are predicted tonight into tomorrow morning from I-35 east into the southern Great Lakes region as southerly winds may allow some isolated, mainly short-distance moth flights to occur from source regions between I-70 and I-80. Additional Low risks are predicted tomorrow night into Wednesday morning as this front continues to move to the east, with the risk area mainly focusing east of I-55 into the southern Great Lakes. Low risks return to the forecast briefly Friday night into Saturday morning as a quick-moving cold front moves through the corn-growing region. The Low risk area includes fields to the east of I-35 into south central lower Michigan and the Indiana/Ohio border.