Fallstreak Cloud 2
Also often called a Hole Punch Cloud. There is a great deal of debate in the scientific and pseudo scientific community over how these unusual clouds form. Theories go all the way from ice crystals falling from super cooled water clouds, ice crystals falling triggered by passing high altitude aircraft, to electronic effects in the Ionosphere (see HAARP) and secret government weather modification weapons testing. What ever their source, this one formed over Mount Pleasant, Utah.