Southerly winds will gradually increase and spread to the east from the Plains into the heart of the corn-growing region over the next several days as high pressure advances into the eastern United States and low pressure develops in the far northern Plains or southern Canada. The overall weather pattern, however, is expected to be somewhat messy and longer corridors of uninterrupted southerly wind flow are not usually common in such an expected regime. As a result, Low migration risks for mainly isolated moth flights are in the forecast tomorrow night into Saturday mainly west of the Mississippi River. The risk area does spread east over the weekend as a cold front drops south by late in the weekend or early next week. There are still some question marks with this front, but most likely scenario right now puts a cold front passage through a good portion of the corn-growing region in the Monday-Tuesday time frame with some heat potentially building back into mainly the Plains states by mid-week next week. Growers should continue to monitor traps and scout fields in areas where crops may be susceptible to corn earworm damage.