Why from Google?
"The wind map is a personal art project, not associated with any company."
Whois on the domain name:
Name: Fernanda Viegas
Organisation: Fernanda Viegas
716 E. 7th Street, #3
Boston, MA 2127
The article where I found this link attributed the work to Google computer scientists and said that it may be incorporated with maps at some point.
I though it looked pretty neat, but if you zoom in you find out fairly quickly that they don't seem to have that many data feeds.