Bizarre. Looking at a distance, the disc cloud, which is outlined by an unusual ring of sunlight, appears to resemble an alien craft. It was like a scene from the mid-90s movie, “Independence Day”.
Experts in meteorology explained that the phenomenon that took place in Moscow was just an optical effect of some rare weather conditions, but the latest clip – apparently filmed at the end of last week – has again set news to break all over the place.
One user on the video-sharing website Live Leak where the clip was first posted wrote, “How come I have never seen clouds that look like that. Now we get two in a matter of weeks in different places.”
Others are starting to speculate – as usual individuals who enjoy sci-fi movies – that the consecutive bizarre formations could mean an alien invasion in the not-so-far future.
Another user commented, “Run the two videos and put them beside each other… It’s very strange… are they here?”
The two clips appear to show a formation known as a “fallstreak hole”, which occurs when moisture in the air cools below 0C but is unable to turn into ice.
A fallstreak hole (also: hole punch cloud and punch hole cloud) is a large circular gap that can appear in cirrocumulus or altocumulus clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the lack of ice nucleation particles. When a portion of the water does start to freeze it will set off a domino effect, due to the Bergeron process, causing the water vapor around it to freeze and fall to the earth as well. This leaves a large, often circular, hole in the cloud.
It is believed that a disruption in the stability of the cloud layer, such as that caused by a passing jet, may induce the domino process of evaporation which creates the hole. Such clouds are not unique to one geographic area and have been photographed from the United States to Russia.
While most of the “supercooled” water remains suspended in the sky, rings of ice do form and plunge to earth, leaving doughnut-shaped holes in the cloud layer.
The luminous effect visible in the Russian and Romanian videos is due to the sun being low in the sky. I think they “are” already coming to invade us. BEWARE!