Insect Alert For

Corn Earworm

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Alert Details

Corn earworm migration risks are in the forecast overnight tonight into tomorrow morning especially along and east of the I-55 corridor in southeast Missouri and Illinois as a cold front advances southeast through the corn-growing region. Along with potential and needed precipitation chances in this region, southerly winds east of the front may lead to some corn earworm moth populations blowing north. A break in the migration risk is in the forecast for mid-week as northwest flow and much cooler temperatures move south, but migration risks return again by late week and into next weekend. Risk upgrades are probable by next weekend, but for now the forecast is still somewhat low confidence so Low risks are in place for much of the corn-growing region as south to southwest winds and temperatures increase by that time. Please stay tuned for forecast updates later this week and watch for the potential for risk upgrades as confidence increases!