On March 27, 2023, residents of Moscow captured a giant black smoke ring on video after an incident in Strogino. The mysterious black ring appeared in the sky above Moscow and footage of the unusual phenomenon was published online by eyewitnesses.

According to officials, such occurrences are not rare: similar rings are formed from smoke that is suddenly released from pipes, such as from a boiler room. Without dispersing, the exhaust takes the form of a ring or loop and drifts through the sky. This was stated by the head of the meteorology and climate department of the Central Hydrometeorological Service, Nikolai Tereshonok, on television. The official assured that the ring does not pose a threat to the residents of the capital and should soon dissipate.