The article discusses three types of butterfly effects in Lorenz models: sensitive dependence on initial conditions, the creation of organized circulation by tiny perturbations, and the role of small-scale processes in predictability. The first kind was rediscovered by Lorenz in 1963, the second was introduced as a metaphorical butterfly effect in 1972, and the third, known as the "real butterfly effect", was based on Lorenz's 1969 study.