Insect Alert For

Corn Earworm

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Alert Details

Low corn earworm migration risks remain in the forecast for the next three nights as the corn-growing region weather pattern is expected to stall due to influences from Hurricane Florence off the southeast United States coast. A low pressure system and attendant cold front will likely develop in the western Dakotas but remain there for the next several days due to high pressure in the southern Great Lakes region and the hurricane keeping things from moving east. As a result, southerly winds to the east of the cold front will remain in the same area for several days, and may lead to an isolated corn earworm migration risk mainly from western Wisconsin and far northwest Illinois as far west as Nebraska and the eastern Dakotas through Friday morning. Growers with crops still at susceptible stages to damage, especially fresh market and processing growers, should continue to monitor traps and scout fields. It does appear a cold front will finally work southeast through the region sometime early-mid next week.