Insect Alert For

Black Cutworm

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

A Moderate black cutworm migration risk is predicted across a good portion of Missouri, far southeast Iowa, and western Illinois tonight into tomorrow morning. A deep area of low pressure is predicted to move from the central Plains into the corn-growing region by tomorrow, and south winds in advance of a trailing cold front and precipitation should result in scattered black cutworm moth flights into the Moderate risk area. Isolated moth flights may occur as far north as the US 20 corridor in Iowa and Illinois and also east into western Indiana. As the cold front moves east tomorrow, the main forecast risk shifts into the eastern corn-growing region, or roughly along and east of I-57 in eastern Illinois into Indiana, Ohio, and Kentucky. A brief break in migration risks is then predicted Thursday night into Friday morning before the next weather system moves in for the weekend. Low migration risks are predicted mainly south of I-80 by Friday night into Saturday and also Saturday night into Sunday morning. Growers located especially to the south of I-80 should monitor for new moth flights this week and into next weekend, and earliest planted corn fields in Missouri and Illinois should also monitor corn growth as early flights from late March into early April may now becoming attractive food sources for some emerging black cutworms.