A series of cold fronts are likely to move through the corn-growing region in the next week or so as a very progressive and increasingly fall-like weather pattern asserts itself. Each of these fronts may provide a short-term window of mainly isolated corn earworm migration risks into remaining processing and fresh market fields in the northern reaches of the corn-growing region. The quick movement of the weather systems, however, will limit the overall scope of the risk. Low risks are predicted tomorrow night into Saturday morning mainly to the east of I-57 from eastern Illinois into lower Michigan, northern Indiana, northern Ohio, and far southwest Ontario, Canada. Another cold front early next week should provide another opportunity for potential isolated moth flights initially west of Lake Michigan Sunday night into Monday morning, and then across the southern Great Lakes Monday night into Tuesday morning as the cold front pushes southeast. Growers with fields still at susceptible stages to damage should continue monitoring traps and apply treatments where needed.