The forecast for late week into the weekend has changed little, as a brief but intense period of heat and humidity is expected to overtake a good portion of the central and southern corn-growing region. South to southwest winds during this time period may also lead to a few isolated corn earworm moth flights from source regions in Texas and also further east/northeast into the mid-south region of the country. For these reasons, a Low corn earworm migration risk is in the forecast beginning tomorrow night across the central Plains and into the western corn-growing region, or from Kansas and western Missouri as far north as southern South Dakota and southwest Minnesota. A cold front is expected to push southeast through the corn-growing region by the weekend and into early next week, so the Low migration risk shifts east ahead of the front with time. Low risks are predicted mainly southeast of a line from near Goodland, Kansas to Minneapolis, Minnesota into Wisconsin and Illinois Friday night into Saturday, and finally east of I-35 into the I-75 corridor Saturday night into Sunday morning, or from Missouri and central Iowa east as far as western Ohio and southern lower Michigan. With both field and sweet corn beginning to tassel especially along and south of I-80, scouting and monitoring traps may become useful in such a weather pattern expected later this week and into the weekend.