Corn earworm risks are expected to remain rather limited the next five days due to a lack of stronger southerly flow from active source regions in the mid-south and southwestern corn-growing regions. High pressure is expected to build south into the Plains by tonight as a cold front pushes through the eastern Midwest into the Appalachian Mountains. A lack of southerly winds in the corn-growing region overnight into tomorrow morning results in a no risk forecast through Thursday morning. Low risks are introduced to the forecast across portions of northern Kansas into Nebraska for Thursday night and Friday night as the high pressure system moves slightly to the east and southerly winds return to this area. The high will be slow to move east due to Hurricane Irene moving up the eastern United States coastline. As a result, low risks remain primarily in the Plains through the middle of the weekend but do expand east into the corn-growing region and a portion of the upper Midwest by late in the weekend and early next week as a cold front pushes east.