Insect Alert For

Corn Earworm

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

Low corn earworm migration risks remain in the forecast on a near daily basis across portions of the corn-growing region as a persistent upper level ridge keeps south to southwest winds in place. At least one cold front, however, should keep the migration risk across the Plains states by late in the week and into next weekend. A cold front is predicted to move southeast through the corn-growing region later tomorrow into Wednesday. South to southwest winds along with precipitation to the east of this front may result in some isolated moth flights especially into Kansas and Nebraska east into Indiana and southwest lower Michigan tonight into tomorrow morning, and then mainly east of I-35 tomorrow night into Wednesday morning. Migration risk probabilities are higher tomorrow night into Wednesday morning given an expected source region in the mid-south, but crop stage and time of year keep the risk level in the Low category as the majority of fields are not at a critical stage of growth at this time. Additional Low risks are in the forecast late week into next weekend mainly from Kansas north into Nebraska and southern South Dakota as northwest flow behind the front dominates the weather pattern across the central and eastern corn-growing region.