The weather pattern across the central and eastern United States is expected to become more active over the coming week. At least one and potentially two weather systems should move through much of the corn-growing region which should result in southerly winds and precipitation. This combination of weather may lead to corn earworm migration on an isolated basis mainly across the upper Midwest and Great Lakes region where some fresh market crops may still be at susceptible stages to damage.
Low risks are in the forecast for the next five days as a low pressure system moves east across Canada and its attendant cold front push across virtually all of the corn-growing region. Low risks are initially found in Nebraska and South Dakota tonight and early tomorrow morning before spreading/expanding to the east into the I-35 corridor for Friday night and Saturday morning. Thereafter, much of the Great Lakes region and eastern Midwest is in the risk area as southerly winds and warmer temperatures move east along with rain chances.