Insect Alert For

Corn Earworm

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Alert Details

Another active weather week is predicted across the corn-growing region this week before cooler and potentially drier weather moves in as soon as late week or next weekend. In the meantime, isolated corn earworm migration risks remain in the forecast as a series of frontal systems moves through the area. The first front is predicted to pass through the central and eventually eastern corn-growing region tonight into tomorrow morning before stalling out between I-70 and I-80 tomorrow night. A Low corn earworm migration risk is predicted to the east of this front, mainly along/east of I-57 overnight tonight. Low risks continue tomorrow night into Wednesday morning mainly across Kansas but potentially into southern Nebraska, far southwest Iowa, and western Missouri as southerly winds re-focus in this region. As the next low pressure system and associated cold front begins to organize in the Plains and western Midwest, southerly winds and precipitation may result in an isolated moth flight as far north as the Iowa/Minnesota border into southern Wisconsin Wednesday night into Thursday and then primarily along/south of the US 36 and US 24 corridors late week as the front settles south. Corn earworm trap counts remain rather low across source regions in the mid-south and lower Mississippi delta regions but are beginning to increase in some of these areas so some isolated moth flights will remain possible this week.