Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

A cold front is expected to push southeast through the corn-growing region in the next 24-36 hours. Showers and thunderstorms are expected to break out along and south of this front especially across the lower Missouri River valley later today into tonight. South to southwest winds in advance of the cold front and predicted precipitation may lead to some isolated corn earworm moth flights from source regions in the southern Plains and mid-south region this evening into the overnight hours especially into southeast Kansas, Missouri, central and southern Illinois, Indiana, western Ohio, and northern Kentucky. Northwest flow is expected to dominate the weather through much of the week so risks are dropped from the forecast until Thursday night and Friday. By late week, southerly winds are expected to take shape across the Plains states ahead of the next low pressure system in a continued progressive pattern. Low risks are back in the picture in Kansas and Nebraska by Thursday night with an expansion east into the Mississippi River valley by Friday night into Saturday. Some moth flights have occurred especially across the central and eastern Midwest in the last week to ten days so growers are urged to monitor traps and scout crops that are at or are entering critical growth stages where corn earworm damage may occur and take appropriate action where it is needed.