Very warm to hot and humid weather is expected to return to at least the central and southern portion of the corn-growing region by late this week into this weekend. The hot/humid weather will be fueled by robust south to southwest winds straight out of the southern Plains states. Given the favorable weather setup and with some corn/sweet corn now tasseling especially along/south of I-80, corn earworm migration risks are warranted initially mainly west of I-35 and south of I-90 Thursday night into Friday morning, or from Kansas and western Missouri north into Nebraska, western Iowa, southern South Dakota, and southwest Minnesota. By Friday night into Saturday morning, the Low risk expands east to near Lake Michigan and into the I-55 corridor in Illinois, and finally as far east as lower Michigan, Indiana, and far western Ohio by Saturday night into Sunday morning as a cold front pushes southeast. Growers with crops at susceptible stages to damage should monitor traps and scout for the possibility of some isolated moth flights by late week and next weekend.