Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
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Alert Details

Low corn earworm migration risks are predicted tonight mainly across far northern Kansas, eastern Nebraska, southeast South Dakota, southern Minnesota, Iowa, northern Missouri, northwest Illinois, and Wisconsin as southwesterly winds increase to the east of a cold front. Some isolated moth flights will be possible into this area especially given the expected precipitation near and east of the front which may serve as drop zones. Low risks continue tomorrow night into Thursday morning further to the south and east as the front moves in that same direction. The risk area lies mainly east of a line from near Topeka, Kansas to north of Chicago, Illinois, or from eastern Kansas east into Ohio and north into lower Michigan and southern Ontario, Canada. After this front passes, no risks are in the forecast with northwest flow returning to much of the corn-growing region for next weekend. Growers with crops at susceptible stages to damage from corn earworms, however, are still encouraged to monitor traps and scout fields despite the lack of migration risk in the forecast.