2015 Corn Earworm Migration Risk

A Moderate risk of corn earworm migration is predicted across a portion of the corn-growing region next weekend. The risk is focused across northeast Kansas, northern Missouri, western Illinois, central and eastern Iowa, far southeast Minnesota, and southwest Wisconsin. A favorable, long-duration pattern of south to southwesterly winds and at least scattered areas of precipitation may lead to scattered CEW moth flights into the risk area.

Trap counts and moth populations in mid-south and southern source regions are still running below average for this time of year in many locations. There are some signs of trap increases in Arkansas and western Tennessee as well as extreme southeast Missouri so the possibility does exist for some of these moths to begin flying north later this week and into next weekend given an expected favorable weather pattern.