Insect Alert For

Black Cutworm

Risk Level:
Low
Affected Area:
Full page
Alert Details

A continued active weather pattern across the corn-growing region will lead to black cutworm migration risks in the forecast for the next several days. Southerly winds are likely to develop across the Plains today and could spread as far east as near the Mississippi River by tonight ahead of low pressure forming across the High Plains. Low migration risks are in place tonight into tomorrow morning from northern Kansas and Missouri north to the I-94 corridor in North Dakota and Minnesota. As a cold front pushes southeast tomorrow into tomorrow night, the Low risk area shifts southeast from northeast Kansas and Missouri into Iowa, southern Wisconsin, Illinois, Indiana, western Ohio, and southern lower Michigan. The front is then predicted to stall out somewhere near the I-80 corridor as a new low pressure system develops in the central Plains. South to southwest winds, as a result, will remain in place especially to the east of the Mississippi River and are expected to originate in a favorable source region for black cutworms across the mid-south and Mississippi River valley. Thus, by late Wednesday into early Thursday, Moderate migration risks have been introduced to the forecast especially across eastern Illinois and Indiana with Low risks as far east as southern Ontario, Canada into Ohio. No migration risks are currently in the forecast after Thursday morning, but growers across much of the corn-growing region should continue to monitor traps and potential flights/timing for potential issues later this spring once corn emerges.