Raw dashboard footage captured by storm chaser Connor Croff shows a rare serpentine tornado twisting fluidly across the landscape near South Dakota. The tornado’s smooth, snake-like motion—described by many as “glitchy” or CGI-like—has triggered intense debate online. Widely being called one of the strangest tornadoes of the year, the clip has once again highlighted how unpredictable and extreme weather events are becoming. #Tornado #SerpentineTornado #SouthDakota #ExtremeWeather #StormChaser #N

New footage shows the aftermath of a tornado that hit central Illinois, tearing the roofs off multiple homes. Updates here: http://nbcchi.com/xUcbcyo | NBC Chicago