Smoke machine or portal to hell?

Einstein

Temporal Engineer
Messages
5,413
Looks just like a big smoke ring to me. Evidently it wasn't very windy. Or it would have dissipated faster.
 

TnWatchdog

Senior Member
Messages
7,099
This ingenious ring is brought to you from the good people of Agenda 21. They float them over cities to spray us like bugs, cough cough, depopulation at work. I am only kidding...or am I?
 

BlastTyrant

Senior Member
Messages
2,599
This Black Smoke Ring Is Amazing, But It's No Mystery - NBC News

Apparently from Fireworks? or based on similar clouds seen in the skies in recent years, the giant black hoop was likely to have been little more than a smoke ring generated by combustion at nearby factories.

Plenty of industrial machinery is known to create ring-shaped clouds of smoke, though these are usually lighter-coloured, considerably less dense and vanish in just one or two minutes.

I do remember this happening a few other times as well.
 

Top