Low corn earworm migration risks are in place tonight into tomorrow morning mainly across portions of the upper Midwest from northern Iowa and Illinois into Minnesota and Wisconsin. Southerly winds to the east of a weak low pressure system in the Plains may result in isolated moth flights to the north overnight tonight. A cold front is expected to move through the corn-growing region late this week and next weekend. South to southwest winds are likely to be stronger and more widespread to the east of this front, and Low migration risks cover much of the upper Midwest and western Great Lakes region starting Wednesday night and advancing east into the weekend. Growers in these areas should continue to monitor their fields, especially if at a susceptible stage to damage, for the potential of isolated moth flights later this week and into next weekend.