And it seems that there is an explanation for this.
Apparently, a Moscow weather department spokesperson offered this as an explanation: “Several fronts have been passing through Moscow recently, there was an intrusion of the Arctic air too, the sun was shining from the west — this is how the effect was produced. This is purely an optical effect, although it does look impressive.” But…really?
As bizarre and Independence Day-esque the sky looks, it doesn’t appear that this is a doctored video, according to the somewhat-sparse news reports and comments on the YouTube page. But you never know.
Bizarre weather phenomenon seem to be accuring with increasing intensity throughout the world. I'm not saying that this is cause to be concerned that the world is going to devour us with snow storms and tidal waves, a la "The Day After Tomorrow", but this can't just be a coincidence.