Patrick Altoft posted on Twitter about a new Google rich snippet designed for snow conditions. He searched for [geilo snow report] in Google and up came a rich snippet showing the snow conditions on that mountain. Here is a picture:
As you can see, this rich snippet is pulled from the data on onthesnow.com. It contains the snow depth statistics, new snow stats within 24 and 72 hours, the conditions of the snow, the lifts currently open on the mountain, the trails currently open on the mountain and the current weather. It also shows the last time the data was updated on that web page.
This is not a documented rich snippet, as far as I can see. Plus, I do not see any specific rich snippet markup within the source code of the page to tell you how to implement this yourself.
Postscript: You know you’ve been covering search too much when you forget what you wrote about just two years before. We actually noticed this in January 2011 and it was a feature Google announced back then.