Since January, at least six Kentucky farmers have been killed in tractor rollovers in which terrain changes caused by recent heavy rainfalls were a factor. In addition to mud and wet, slick grass, the rain created marshy areas and holes where none had been before; often these places are invisible due to weeds and tall grass.
Kentucky Injury Prevention and Research Center, "!!Tractor Hazard Alert!!" (1997). Kentucky Haz Alerts--Tractors/Logging. 6.