Insect Alert For

Corn Earworm

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Alert Details

Corn earworm migration risks are in the forecast the next several nights as southerly wind flow returns to the corn-growing region ahead of a couple of low pressure systems moving through the northern Plains and northern corn-growing region. Low risks are predicted tonight into tomorrow mainly west of I-35 in the Plains and into Minnesota, Iowa, and northwest Missouri. Low risks expand east into Wisconsin and Illinois tomorrow night into Saturday. By late Saturday into Sunday, mainly the southern Great Lakes and eastern corn-growing region are under a Low migration risk as the first system moves east but weakens which results in weaker southerly wind flow. Focus then shifts back to the Plains early next week ahead of the next developing weather system. Later periods are lower confidence due to potential tropical interaction with the development and movement of weather systems across the eastern two-thirds of the country, so only Low risks are in place at this time.