According to the video uploader a spectacular rainbow cloud appeared over the city Rybnik in southern Poland end of July 2016.
According to a meteorologist from a TV weather channel, the unusual shape and colors above the clouds is a so-called rainbow cloud, it arises as a result of the passage of sunlight which breaks down the ice particles in clouds at certain heights, but I am not sure if it is just an unusual optical sky phenomenon. Is it possible that this phenomenon is an earthquake light?
An earthquake light is an unusual luminous aerial phenomenon which takes many forms that reportedly appears in the sky before an earthquake and something afterwards and could provide an early warning sign. It is known that earthquake lights appear weeks up till minutes before an earthquake occurs.
Appearances of the earthquake light seem to occur when the quakes have a high magnitude, generally 5 or higher on the Richter…
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