Insect Alert For

Corn Earworm

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

Low corn earworm migration risks are in the forecast for the next two nights before a potentially greater migration risk comes into the picture by the end of the week and into next weekend. As a weak cool front works its way through the Plains and upper Midwest today and tonight, some southerly winds may allow an isolated moth flight to occur especially from central South Dakota southward into Nebraska and northern Kansas. The low risk area expands east into the corn-growing region tomorrow night into Thursday morning with insect migration probabilities as far east as Wisconsin and Illinois by that time. A greater migration chance comes Friday night into Saturday and again Saturday night into Sunday as a stronger low pressure system and associated cold front push from west to east through the corn-growing region. Stronger southerly winds in addition to higher precipitation probabilities by that time has resulted in the hoisting of a Moderate migration risk initially across portions of South Dakota, southwest Minnesota, western Iowa, Nebraska, and northern Kansas with the Moderate risk expanding east by Saturday night into Sunday morning to include additional sections of Iowa, Missouri, Wisconsin, Illinois, Indiana, Michigan, and far northwest Ohio. Low risks are also present into Ontario, Canada and Ohio/Kentucky by next weekend. Stay tuned for more details on this potential corn earworm moth flight for next weekend.