Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

Low corn earworm migration risks remain in place for the next two days mainly across the western Corn Belt and central Plains region. Southwest winds to the southeast of a low pressure center and attendant cold front in the northern Plains will provide a corridor for potential corn earworm migration especially later tonight into early Friday morning. Low risks extend as far north as southern Minnesota and southwest Wisconsin in addition to further southwest into Nebraska, Iowa, western Illinois, Missouri, and Kansas. The risk remains in place mainly across the Plains and into Iowa, Missouri, and far western Illinois Friday night into Saturday morning. Southwest winds by this time, however, will be in a weakening state and little corn earworm migration activity is expected. No risk is in place for the extended period as high pressure in the southeast United States pushes west and pinches off any pronounced south to north flow from active source regions in the southern United States.