The overall flow across the corn-growing region is expected to be weakly dominated out of the northwest for the next several days, so any chance of corn earworm migration is very limited, if any, until we get into late in the weekend and early next week. By that time, a low pressure system is expected to move east across southern Canada with a cold front dragging southeast to its south. Modest southerly winds are expected east of the front which may pose an isolated moth flight risk. As a result, Low migration risks are predicted west of I-35 Sunday night into Monday morning, or from Kansas north as far as southern North Dakota and central Minnesota. Low risks then expand southeast Monday night into Tuesday morning as the front continues southeast, with fields as far east as Lake Michigan and the I-55 corridor in Illinois at risk.