Not sure why this is noteworthy, there are much better site that are very similar.

Like say this one: https://www.windy.com/

Similar look/feel, but shows predictions as well as the current state. Also allows to pick between your forecast models.

Also http://ventusky.com/ , which was the first service like this that I have seen, and was at the top of HN once.

This was the original version of this that inspired windy.com