Insect Alert For

Corn Earworm

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

The weather pattern is predicted to shift back into a southwest flow by the holiday weekend and into early next week. As a result, southerly winds and precipitation chances may lead to some isolated corn earworm moth flights into the corn-growing region. Low risks are in the forecast primarily across Kansas and into southern Nebraska tomorrow night into Saturday morning as southerly winds and precipitation focus in that region. As low pressure organizes and deepens across the Plains states and high pressure moves into the southeastern United States, Low risks expand to the north and east by Saturday night and Sunday morning, with fields as far north as US 20 and east into Illinois at risk of seeing some isolated moth flights. Additional Low risks extend into southeast Minnesota, Wisconsin, lower Michigan, Indiana, Ohio, and Ontario, Canada by Sunday night into Monday and Monday night into Tuesday as a cold front slowly moves southeast. While any early-season corn earworm flights do not necessarily cause damage to the crops, any more intense moth flights may result in higher second generation numbers later in the growing season. Growers in the Low risk area should monitor for new moths in the next week to determine flight intensities in their area.