The weather channel guy was talking about this video:

More Jonesboro tornado formation (courtesy @kevinhardin39) pic.twitter.com/BsVTrX2Fbp

— Joey Sulipeck FOX13 (@joeysulipeck) March 28, 2020

The weather guy was pointing out that it almost looks stationary, like it’s growing but not moving. But it was, at around 40 miles per hour.