Insect Alert For

Corn Earworm

Risk Level:
No Risk
Affected Area:
Full page
Alert Details

Corn earworm migration risks return to the forecast by Tuesday night into Wednesday morning and then increase thereafter as a southwest to northeast wind flow pattern sets up across much of the corn-growing region. Low pressure is expected to develop across the northwest Plains region by Tuesday as high pressure moves into the central and eastern Midwest. This should result in southerly winds returning to the Plains states by Tuesday night and a Low migration risk has been posted. As south to southwest winds increase Wednesday and Thursday nights, a Moderate risk has been hoisted initially across the Plains and western Midwest before spreading as far east as the Mississippi River by Friday morning. Low risks eventually cover much of the corn-growing region by the end of the week as high pressure continues to drift to the east and low pressure moves along the United States/Canada border. There is some uncertainty in how this weather system may interact with a potential tropical system in the Atlantic/Caribbean by late week so continue to monitor subsequent forecasts for updates as the week progresses.