A rather slow moving weather pattern is expected to continue through the next five days as low pressure develops in the western Plains and high pressure remains in the southeast United States. The result will be a prolonged period of south to southwest winds across much of the Corn Belt that may pose a low risk of corn earworm migration. The risk is initially predicted across the Plains tonight into Thursday morning with a slow expansion into Iowa and western Missouri by Thursday night and Friday morning. Just how quickly southerly winds advance east is still in question but it does appear that much of the Corn Belt from eastern Nebraska east into southern Michigan and Ohio will be at risk for at least isolated corn earworm migration especially later Saturday into early next week. The latest trap counts from available source regions continue to indicate very low to no moths caught in the last week and with planting progress well behind schedule and many areas still experiencing flooding in the Mississippi River valley, only low corn earworm migration risks are predicted at this time.