A building heat dome especially across the southern two-thirds of the corn-growing region may also lead to some isolated corn earworm moth flights in increasing south to southwest flow over the next 2-3 days. A cold front is predicted to pass through the corn-growing region over the weekend, and will essentially end or greatly reduce any further threat of migration events especially after Sunday. Low risks are in place, however, across a large portion of the region from Kansas, Nebraska, and southeast South Dakota all the way east into the southern Great Lakes region (Ohio, Michigan, Indiana, and southern Ontario, Canada) through midday Sunday until the front clears the region. Crops/host plants in mid-south and southern source regions, however, are still at an attractive growth stage for corn earworm at the present time so we do not expect widespread, heavy flights, but certainly some isolated moth flights are possible over the next few days. Growers with crops at susceptible stages to corn earworm damage, including fresh market and vegetable growers, should be monitoring traps and scouting fields in the next week.