Insect Alert For

Corn Earworm

Risk Level:
Affected Area:
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Alert Details

A cold front is expected to advance southeast through the corn-growing region this weekend into early next week. Southeast of this front, south to southwest winds and rather warm to hot conditions are expected. Corn earworm moths are predicted to move north on these winds, and Low migration risks are predicted tonight into tomorrow generally west of Lake Michigan and the I-57 corridor in eastern Illinois. As winds increase and the duration continues to increase, Moderate migration risks for the potential of scattered moth flights is predicted Saturday night into Sunday across portions of northeast Missouri, eastern Iowa, southeast Minnesota, Wisconsin, and northern/central Illinois with Low risks as far east as the I-75 corridor in southeast lower Michigan and western Ohio. Low risks are then predicted Sunday night into Monday along/south of I-80 west of Lake Michigan and a little further north into the I-94 corridor in lower Michigan and points south as the front continues to move southeast but with less favorable/weaker winds. Growers should continue active scouting efforts and trap checking especially if crops at a susceptible stage to corn earworm damage are present.