Insect Alert For

Corn Earworm

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Alert Details

A cold front is expected to begin to make progress to the east across the Plains states today into tonight. South to southwest winds are likely to continue to the east of the front and precipitation is expected to develop along and east of the front, as well. As a result, there may be some isolated corn earworm moth flights especially from Kansas and Missouri north into eastern South Dakota and Minnesota and as far east as Wisconsin and Illinois. The cold front will continue to move to the southeast tomorrow, and most of the corn earworm migration risk should focus to the east across eastern Iowa into Wisconsin, Illinois, Indiana, far western Ohio, and southern lower Michigan. No additional risks are predicted after midday Thursday as northwest flow should return to much of the corn-growing region bringing an end to the high temperatures as well as bringing additional rain chances, as well.