The weather pattern is expected to turn rather active this week with a frontal boundary and associated precipitation wavering back and forth across the heart of the corn-growing region. South of the front, hot and humid conditions are expected along with south to southwest winds. Corn earworm migration events are predicted each night through next weekend, and while the overall risk level each night is in the Low category, we are monitoring potential time periods where higher risks may be warranted once the exact placement of the frontal boundary is known. Low risks are predicted tonight into tomorrow morning mainly west of I-35. Tomorrow night, the risk area shifts a little further east and is encroaching upon the Mississippi River. By late week and into early next weekend, the primary risk area should focus mainly along and south of I-90 from South Dakota and extreme southern Minnesota and may extend as far east as Wisconsin and Illinois by late in the period. Growers should be checking traps regularly and also scouting fields especially where crops are at a critical growth stage where damage could occur.