Insect Alert For

Corn Earworm

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

Corn earworm migration risks return to the forecast by tomorrow night as the next in a series of low pressure systems develops in the Plains states and begins moving east. This system is expected to be a little more typical of the winter or spring versus summer, with a rather deep area of low pressure expected over the heart of the corn-growing region by Friday into Saturday. A corridor of southerly winds in advance of a developing cold front may lead to some isolated moth flights initially from Texas north into Kansas, Nebraska, far southeast South Dakota, southwest Minnesota, western Iowa, and far northwest Missouri tomorrow night into Friday. By Friday night into Saturday, the risk shifts east with the front and focuses mainly east of I-35, south of US20, and west of I-57, or from eastern Kansas and Missouri north into central and eastern Iowa, and much of Illinois. Overall, the main change to the forecast from the last few days is to keep the migration risk a little further south based on wind flow and where rainfall may impede any flights further north.