Insect Alert For

Corn Earworm

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

Low corn earworm migration risks return to the forecast by Thursday night into Friday as a low pressure system develops in the northern corn-growing region. Southerly winds should develop east of a trailing cold front south of the low, with the primary risk area from Kansas, Nebraska, and far southeast South Dakota east into Wisconsin and Illinois. Late week and into the weekend, Low risks continue east of this low as it becomes a rather slow-moving upper-level low pressure system, which is a little atypical for the summer months. Wind flow around these lows is typically weaker but nonetheless will be moving from a favorable source region in the mid-south and southern states so Low migration risks continue across much of the corn-growing region east of I-35 by the weekend. Depending on the strength of the low, there could be some risk upgrades (especially in eastern areas) for the weekend but confidence is not high enough yet to warrant any risk upgrades.