Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

Low corn earworm migration risks are in the forecast on an almost daily basis for the next five days as a fairly active weather pattern affects primarily the southwestern corn-growing region. Despite the active weather pattern, however, the predominant upper level wind flow remains out of the northwest. As a result, corn earworm migration risks are being kept in the Low category despite the time of year and crop stage. Low risks are in place tonight across Nebraska, Kansas, southwest Iowa, and into Missouri as a warm front currently draped from the central Plains southeast into Missouri provides the focus for showers/storms and potential drop zones for any migrating corn earworm on mainly light southerly winds to the south of the front. Low risks continue tomorrow night into Thursday morning in fields from eastern Kansas into southern Iowa, Missouri, and far southwest Illinois along this same front. As a new low pressure system organizes in the northern Plains by late in the week and next weekend, Low risks do expand further to the north and east, and reach as far north as southern Minnesota, southern Wisconsin, and far southwest lower Michigan.