A frontal boundary is expected to continue to sag slowly to the south over the next few days, and eventually any potential migration risk for much of the corn-growing region will be greatly limited by a dominance of light northerly winds on the north side of this boundary for the balance of the week. Before this happens, however, southerly winds may provide an isolated corn earworm migration risk tonight into tomorrow from Kansas, Missouri, and western Kentucky north into portions of Nebraska, Iowa, Illinois, and Indiana especially along/south of the US 20 corridor. Growers should continue to monitor traps and scout fields despite a lack of a more widespread or elevated risk level as some moths and larvae from previous flights may be present in some areas.