Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

Low corn earworm migration risks are predicted tonight into tomorrow across portions of Kansas, Nebraska, southern South Dakota, southwest Minnesota, Iowa, and Missouri as southerly wind flow increases to the east of an area of developing low pressure in the High Plains. As this system continues to intensify, look for these southerly winds to increase further east and north, also, and Low migration risks remain in the forecast east of a trailing cold front from the Plains as far east as lower Michigan and Indiana by tomorrow night into Saturday. It appears that there is a greater chance of scattered corn earworm moth flights Saturday night into Sunday morning now especially just west of Lake Michigan, and Moderate migration risks have been introduced to the forecast across eastern Iowa, northern/central Illinois, and Wisconsin during this time with Low risks as far east as southern Ontario, Canada and Ohio. Growers in the Great Lakes region along/east of the Mississippi River should monitor traps and scout fields this weekend into next week as new moths are expected to arrive in some areas. Low risks then focus back across the Plains and southwestern corn-growing region as the front moves south but stalls out between I-70 and I-80, keeping southerly winds mainly to its south with precipitation and cooler weather to the north.