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​Insect Forecast​

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provided by: InsectForecast.com

Insect Migration ​Risk Forecast

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

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

How to Read the Maps

Black Cutworm

May 20, 2019

Black cutworm risks continue on a nightly basis through this next week as the weather pattern remains active, and also despite now being into late May, planting still lags behind average so we need to continue to monitor for new flights for corn that will likely not emerge until June especially in northern and central portions of the corn-growing region. A strong spring storm system will move through especially the western and central corn-growing region early this week, with southerly winds at flight level likely extending into the northern corn-growing region especially later tomorrow into tomorrow night. Low risks are in place as this system develops in the southern Plains today, with risks extending from Kansas and Missouri north into South Dakota and Minnesota. Moderate risks then enter the forecast as a more direct, southerly wind regime from active mid-south and deep south source regions occurs tomorrow night into Wednesday. The Moderate risk area extends from far eastern Nebraska into Iowa, northern Illinois, southern Minnesota, and into Wisconsin. Low risks are found east into the southern Great Lakes region. Low risks then envelop much of the central and northern corn-growing region late week into next weekend as an active, southerly wind weather pattern along with periodic precipitation remains in place. Growers with newly-emerged corn should especially scout these crops given the numerous black cutworm flights that have already occurred this spring. These previous flights may have new generations that are now at growth stages where feeding could occur.

Corn Earworm

May 20, 2019
No Risk

There is little to no risk for corn earworm migration in the next five days.

Corn Rootworm

May 20, 2019
No Risk

There is little to no risk for corn rootworm hatch in the next five days.

Soybean Aphid

May 20, 2019
No Risk

There is little to no risk for soybean aphid migration or development in the next five days. There may be some soybean aphid egg hatches ongoing especially north of I-80 but there is no threat to any crops at this time.

Western Bean Cutworm

May 20, 2019
No Risk

There is little to no risk for western bean cutworm emergence or development in the next five days.