A deepening low pressure system and associated cold front are predicted to move across the upper Midwest and northwestern Great Lakes region over the next few days. Out ahead of the front, south to southwest winds are predicted along with at least some scattered precipitation areas. Given these factors, Low corn earworm migration risks are in the forecast tonight into tomorrow morning mainly west of a line from Springfield, Missouri to Wausau, Wisconsin and from Kansas as far north as southeast North Dakota. As the cold front pushes southeast tomorrow into tomorrow night, the risk area shifts to fields primarily southeast of a line from Dodge City, Kansas to Eau Claire, Wisconsin and points east to the I-75 corridor. Growers, especially fresh market, vegetable, and the earliest planted field corn that is now silking should pay close attention to traps and field activity for signs of new moths. Once we move into next week, the weather pattern is expected to shift into a predominant northwest flow so no migration risk is predicted at this time.