Insect Alert For

Corn Earworm

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

Corn earworm migration probabilities look limited to the Friday night into Saturday morning time frame mainly west of a line from Springfield, Missouri to Eau Claire, Wisconsin as low pressure develops and deepens across the northern Plains states. Southerly winds to the east of a trailing cold front south of the low may result in some isolated moth flights primarily along and west of I-35 but a few moths could also blow north further east closer to the Mississippi River. As the low pressure begins to move east into the upper Midwest by the weekend, the corresponding migration risk also shifts southeast and envelops fields mainly along and southeast of a Dodge City, Kansas to Green Bay, Wisconsin line by Saturday night into Sunday morning, with risks as far east as the I-75 corridor. No risks are seen thereafter as the weather pattern looks to shift to northwest flow as we move into next week. Fresh market and vegetable growers should monitor traps and their crops for signs of new corn earworm moths as some isolated flights may have occurred in the past several days.