It's funny what you can find when you're looking around the old internet. My family has visited Yellowstone's Grand Prismatic Spring many times over the years, but we never saw anything quite like this. A man shared video of the time when a "steam tornado" formed during his visit.
One of the most popular sites to visit in Yellowstone is the Grand Prismatic Spring. It's popular among people and also for bears as recent visitors at the park discovered when they saw a huge grizzly walking down the boardwalk.