How about a huge mushroom cloud to start off a Thursday morning?
Seen by people in Saratov, SW Russia. Would worry anyone.

According to the Ministry of Emergency Situations, via the government's RIA Novosti, further via the SOTA news agency, it is a fire due to depressurization of the Peschany Umet-Storozhevka gas pipeline.

https://todon.eu/system/media_attachments/files/111/061/697/227/446/156/original/feda0435de7b4c46.mp4