Insect Alert For

Corn Earworm

Risk Level:
Affected Area:
No risk Full page
Alert Details

An active south to southwest weather pattern is expected to continue into next week, but some uncertainty in the track of a potential tropical system in the Gulf of Mexico and what it does to the overall weather flow across the corn-growing region is in the forecast. Despite this uncertainty, Low migration risks are warranted initially tomorrow night into Sunday from Kansas and Missouri northeast into Minnesota, Wisconsin, and lower Michigan and points between as southwest flow increases east of a cool front. Additional Low risks are in the forecast mainly west of I-35 on Monday night into Tuesday as southerly winds increase ahead of a developing low pressure system across the High Plains by that time. The Low risk spreads east as far as Lake Michigan and into portions of Illinois next Tuesday night into Wednesday. Some adjustments to the risk area may be needed by next week once forecast confidence increases, but regardless growers with crops still at susceptible stages to damage from corn earworms need to continue to monitor traps and scout fields as moth flights over the past week and even right up until earlier this morning may have brought new moths in, or generations from previous moth flights may also be present.