Insect Alert For

Corn Earworm

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

Corn earworm migration risks are not expected until the extended portion of the forecasting period (late week into next weekend). By next weekend, a weak low pressure area is expected to traverse from west to east across southern Canada and some southerly winds may occur especially across the Plains states during this time. Of more interest is what will happen with Tropical Storm Isaac in the Gulf of Mexico. At this time, it appears that remnants of this system may advance north into portions of the corn-growing region by the end of the week and into next weekend. Historically, tropical storm and hurricane remnants have brought corn earworms north with them at least on an isolated basis. The forecast confidence is not particularly high at this time, but there is enough to issue a Low risk especially from Missouri and Iowa east into Illinois, Indiana, Ohio, Kentucky, and points to the south for late this week into next weekend.