Insect Alert For

Corn Earworm

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

An active and complex weather pattern is expected across the corn-growing region this week. Heat is expected to continue in many areas especially in the central and southern portions of the area along with at least weak southerly flow. Hurricane Laura is likely to make landfall near the Texas and Louisiana coast region late tomorrow into Thursday, and this storm may also be a player in terms of potential corn earworm migration especially into eastern fields late week. Low risks are predicted in a broad but generally weak southerly flow regime from Kansas, Missouri, and southwest Illinois north as far as South Dakota, Minnesota, and Wisconsin tonight. Southerly flow does look to increase a little bit heading into tomorrow night into Thursday, and a Moderate migration risk is in the forecast from Iowa and southeast Minnesota east into Wisconsin, northern Illinois, northern Indiana, and southwest lower Michigan with Low risks as far east as southern Ontario, Canada and Ohio. Low risks continue in the forecast mainly south of I-90 ahead of a cold front Thursday night into Friday, with again greater focus mainly east of I-55 in the southern Great Lakes and eastern corn-growing region as some moths may get blown north with remnants of Hurricane Laura by that point. A cold front is likely to move southeast and return virtually all of the corn-growing region to northwest flow by the weekend, so little to no risk is predicted after late Friday.