Black cutworm migration risks will be on the increase as early as tomorrow night into Friday morning from northern Kansas, eastern Nebraska, and southeast South Dakota east as far as southern lower Michigan and Ohio as a strong low pressure system develops in the central Plains states. Southerly winds will increase to the east of the low pressure system, and at least isolated moth flights will be possible tomorrow night across the aforementioned region. By Friday night into Saturday morning, the low pressure system should only move slightly to the east and will likely deepen further which will increase winds especially east of the Mississippi River into the southern Great Lakes region. By that time, Moderate migration risks are predicted from roughly the Illinois River east into Ohio and as far north as southern lower Michigan and also southwest Ontario, Canada. No additional risks are predicted after midday Saturday as winds return to a northwesterly direction in most areas, ending any migration threat at that time.