One of the rarest weather phenomena of all time involve what can only be described as fire twisters. These hellish cyclones of flame occur mainly during forest fires combined with rare weather conditions that involve strong winds and intense heat. These are quite possibly some of the rarest weather anomalies ever encountered. Which one did you like the most? Have you ever seen one of them in real life? Sources: viralnova.com listverse.com oddee.com emlii.com