Insect Alert For

Corn Earworm

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

A complex weather pattern featuring Hurricane Florence as a blocking mechanism to low pressure systems and cold fronts across the western and central corn-growing region will lead to several nights of potential isolated corn earworm moth flights. With high pressure in between the hurricane off the southeast coast and low pressure system(s) in the Dakotas and eastern Montana, most of the migration risks will focus from the Dakotas and Nebraska east into Minnesota, northern Iowa, far northwest Illinois, and western Wisconsin through the forecasting period as the front is not expected to move through the corn-growing region until sometime early-mid next week. Growers with crops at susceptible stages to damage, especially fresh market and processing growers, should continue to monitor traps and scout fields as additional but likely more isolated moth flights will be possible in the next several days especially north of I-80 and generally along/west of the Mississippi River.