Insect Alert For

Corn Earworm

Risk Level:
Affected Area:
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Alert Details

As a new, potent low pressure system develops and advances northeast through the Plains and into the southern Corn Belt the next 24-48 hours, corn earworm migration risks will accompany the system especially to the east of a trailing cold front in a corridor of south to southwest winds originating in the southern states. The progressive nature of the system and continued low or non-existent trap counts from the source region leads to only a Low risk of corn earworm migration. The migration risk is focused mainly from eastern Kansas into Illinois and potentially as far north as central Iowa and northwest Illinois later tonight into Wednesday morning. The risk shifts east on Wednesday night into Thursday morning to cover much of the eastern Midwest and Ohio River valley as the cold front pushes east. A brief break in migration possibilities comes by late week but already the next weather system should be developing in the Plains by the upcoming holiday weekend, and, as a result, a Low migration risk has been hoisted for portions of the central and southern Corn Belt.