Insect Alert For

Corn Earworm

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

Corn earworm migration risks will remain on the Low side for the next three nights as primarily weak southerly wind events in a predominantly northwest flow-driven weather pattern are predicted to continue. For tonight, the main risk is across portions of Kansas, eastern Nebraska, far southeast South Dakota, far southern Minnesota, Iowa, and into Missouri as a somewhat narrow corridor of southerly winds sets up from the Plains into portions of the Midwest. Some scattered areas of precipitation may lead to isolated moth flights into this portion of the corn-growing region. The risk area focuses back into the Plains and western Midwest tomorrow night as low pressure organizes in the High Plains. Looking further ahead, by Saturday night into Sunday morning a cold front begins to push southeast through the Midwest. Southerly winds ahead of the front should lead to a fairly organized shower/thunderstorm cluster across the heart of the corn-growing region. Low migration risks are justified from southeast Kansas into Missouri and Illinois north into eastern Iowa and southern Wisconsin during this time. Thereafter, no risk is predicted as winds go northerly across much of the corn-growing region.