Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
Full page
Alert Details

Low corn earworm migration risks will be in the forecast virtually every night through the middle of next week as a persistent, yet somewhat less intense, pattern of south to southwest winds remains in place especially across the western and central corn-growing region. Low risks are predicted tonight into tomorrow morning as far north as I-94 in North Dakota and Minnesota and east to Lake Michigan and I-57 in Illinois as southerly winds return to much of this region. Low risks then continue in the forecast as far east as I-69 in Indiana tomorrow night into Sunday morning, but not as far north as tonight with risks north to near US 12. A repeat performance is predicted for Sunday night into Monday morning as a cold front begins to push to the southeast. With the front now expected to reach south of the Great Lakes by early next week, the main migration risk will focus back across the Plains states as the next weather system develops. Growers with crops at susceptible stages, especially processing and fresh market growers, are encouraged to continue monitoring traps and scout fields despite the lower risks in the forecast as numerous and fairly widespread corn earworm flights have recently occurred and pressure is quite high in many areas.