Moderate corn earworm migration risks are in the forecast for the next three nights across much of the northern corn-growing region as southerly flow ahead of a cold front brings one of the better migration opportunities this growing season. Moderate risks are in place tonight across northeast and eastern Nebraska, much of Iowa, southeast South Dakota, Minnesota, and far western Wisconsin with Low risks east to near Lake Michigan and into Illinois. Moderate risks continue tomorrow night into Sunday morning from Iowa and southeast Minnesota east into Wisconsin and northern/central Illinois as southerly flow increases and shifts further east in response to high pressure settling across the southeast United States. Moderate risks continue in the forecast Sunday night into Monday ahead of the cold front passage, and include much of northern/central Illinois, northern Indiana, northwest Ohio, and southwest lower Michigan. Low risks are found as far east as southern Ontario, Canada and near Pennsylvania. Growers with crops at susceptible stages to damage from corn earworms should closely monitor traps and scout fields beginning this weekend and continuing into next week as scattered corn earworm moth flights are anticipated on a scattered basis over the weekend into early next week.