Insect Alert For

Corn Earworm

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Alert Details

An active weather week is anticipated which may lead to isolated to scattered corn earworm moth flights across portions of the corn-growing region. Growers with crops at susceptible stages to corn earworm damage should monitor traps and scout fields as some flights are anticipated especially into portions of the central and northern corn-growing region especially later this week. Low migration risks are predicted tonight into tomorrow morning from Kansas and Missouri northeast into eastern South Dakota, Minnesota, and Wisconsin. Low risks continue in the forecast tomorrow night into Wednesday morning mainly from Kansas and Missouri northeast into southeast Nebraska, Iowa, Illinois, southern Wisconsin, northern Indiana, and southwest lower Michigan as a weak cool front pushes southeast. As a new low pressure area develops in the Plains and high pressure moves into the eastern United States, warm to hot conditions are anticipated for the Wednesday-Thursday time period along with increasing south to southwest winds. Moderate corn earworm migration risks are predicted from Nebraska and western Iowa north into eastern South Dakota and southern/central Minnesota with Low risks east to Lake Michigan and the I-57 corridor Wednesday night into Thursday morning. As a cold front pushes southeast by Thursday, Moderate risks focus mainly east of I-35 from central Iowa into southeast Minnesota into lower Michigan and northern Indiana with Low risks as far east as southern Ontario, Canada and Ohio by Thursday night into Friday morning. No migration risks are predicted after midday Friday as northwest flow returns for an anticipated brief time period.