Moderate corn earworm migration risks are in the forecast on a nightly basis for at least the next 3-4 nights as a favorable weather pattern that has historically produced moth flights northward into the corn-growing region sets up and remains in place for several days. High pressure will continue to drift off and focus in the eastern United States while low pressure churns across southern Canada before eventually moving east to north of the Great Lakes in Canada by the weekend. A cold front trailing southwest of the low will somewhat slowly push southeast into at least a portion of the corn-growing region. There is still some uncertainty in just how quickly this front moves southeast, but the general theme is south to southwest winds will increase and focus mainly west of Lake Michigan tonight into tomorrow, with a Moderate migration risk predicted across portions of Nebraska, South Dakota, Minnesota, Iowa, Missouri, Illinois, and Wisconsin. Moderate risks shift just a little further east tomorrow night into Friday, and include Minnesota, Iowa, Wisconsin, Illinois, Indiana, and southwest lower Michigan. By the weekend, the cold front should continue a slow trek southeast, and it does appear at this time that the greatest probability for migration events will be along/east of the I-35 corridor and especially across the Great Lakes region this upcoming weekend, potentially extending as far east as into southern Ontario, Canada, as well. Growers are encouraged to regularly check traps and scout vulnerable fields as new generations from previous flights and also new moths from new flights may coincide in some areas over the next week or so.