Insect Alert For

Black Cutworm

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

A series of low pressure systems over the next week should bring a couple of black cutworm migration opportunities to much of the corn-growing region. The first weather system will pass through the area over the next 48 hours or so, and southerly flow east of a cold front may allow some isolated moth flights in a rather progressive regime mainly west of the Mississippi River tonight into tomorrow, but a few moths may also fly north as far east as central Wisconsin and Illinois, as well. Low risks continue tomorrow night into Thursday for areas mainly east of the I-55 corridor as the front continues east, so the southern Great Lakes and eastern corn-growing region are at risk during that time. Late in the week and into the weekend, a more organized and longer-lasting southerly flow setup should result in better chances for migration, and Moderate risks are in place Friday night into Saturday from eastern Nebraska and far eastern South Dakota as far east as southwest Wisconsin and northwest Illinois. Moderate risks continue Saturday night into Sunday mainly east of the I-35 corridor and into the southwestern Great Lakes region. Some adjustments may still be needed later this week but another potential migration event may be in store late this week and into the weekend for a good portion of the corn-growing region.