Insect Alert For

Corn Earworm

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

Corn earworm migration risks are back in the forecast tonight into tomorrow as the next low pressure system organizes in the High Plains and southern Canadian prairies. Southerly winds originating in Texas may bring some isolated moth flights as far north as southeast North Dakota, Minnesota, and western Wisconsin, with risks generally staying west of the I-39/US 51 corridor in Wisconsin and Illinois. As a cold front moves east Friday and into Saturday, the risk area shifts southeast with the front, and Low risks focus mainly across the southern Great Lakes and southeastern corn-growing region southeast of a line from near Wichita, Kansas to Chicago, Illinois. Growers with crops near or at susceptible stages to potential corn earworm damage should continue to monitor traps and scout fields especially given how active the weather pattern has been recently.