Insect Alert For

Corn Earworm

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

Enhanced corn earworm migration risks continue for the next five days as a very active and favorable corn earworm migration pattern continues for all of the corn-growing region. As a cold front pushes east through the Plains tonight and high pressure remains in the southeast United States, southwest winds east of the front will be rather prevalent originating from source regions in Texas, Oklahoma, and western Arkansas. Precipitation along a cold front may also result in further insect drop zones especially from Kansas into Missouri, Iowa, southeast Minnesota, southwest Wisconsin, and western Illinois where a Moderate risk of migration is predicted. Low risks extend east into the Great Lakes and eastern Midwest both tonight and tomorrow as well. Looking further ahead, by the holiday weekend, yet another low pressure system is predicted to develop and with high pressure remaining in the southeast United States, south to southwest winds will be common and rather robust in between the pressure centers. Moderate risks are already in the forecast for both late Saturday and Sunday initially across the Plains and then spreading east into the corn-growing region. Continue to monitor subsequent forecasts for the latest information.