Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
Full page
Alert Details

With a predominant northwest flow weather pattern in place across much of the central and eastern United States, corn earworm migration possibilities are expected to remain limited this week. A quick-moving low pressure system and attendant cold front late in the week, however, may pose a quick corn earworm migration event initially across the Plains into the western/upper Midwest Thursday night into Friday and then spread east into the Great Lakes, Ontario, and the eastern Midwest by Friday night and Saturday morning. Higher risks may be needed for this front later in the week but the quick movement of the system will result in likely just one night of enhanced southerly winds so moths will not have a chance to fly as far compared to consecutive southerly wind nights that usually result in more widespread flights and higher moth counts over a larger area. For these reasons, just Low risks are in place for late week and into next weekend across much of the corn-growing region.