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​Insect Forecast​


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Insect Migration ​Risk Forecast

Is your corn at risk? monitors weather patterns and provides daily insect migration data for crop-damaging insects such as Corn Earworm and Western Bean Cutworm.

These risk forecasts utilize strategically placed moth traps across the major crop-growing areas of the country and combined with weather patterns, can provide flight patterns up to five days in advance. Information is updated daily May through September. Stay ahead of the game with

To receive email alerts when your area is at risk, sign up here.

How to Read the Maps

Corn Earworm

September 30, 2014

A strong cold front is predicted to pass through the corn-growing region during the latter half of this week. Ahead of the front, however, south to southwest winds should continue to blow and may pose an isolated corn earworm migration risk especially for fields in Minnesota, Wisconsin, lower Michigan, and southern Ontario, Canada where there are still crops at susceptible stages to damage either due to late or re-planted crops. Low risk areas focus across southern/central Minnesota into western/northwestern Wisconsin tonight into tomorrow morning; across much of Wisconsin into lower Michigan tomorrow night into Thursday morning; and finally across lower Michigan and southern Ontario, Canada Thursday night into Friday morning. Growers in the Low risk areas with crops still at susceptible stages to damage should continue to monitor their fields until growth stages advance past critical growth stages or the growing season ends.

Western Bean Cutworm

September 30, 2014

No risk of western bean cutworm activity or damage is predicted in the next five days.

Corn Rootworm

September 30, 2014

No risk of corn rootworm activity or damage is predicted in the next five days.

Soybean Aphid

September 30, 2014

No risk of soybean aphid activity or damage is predicted in the next five days.