It's not a gif, he's just got ~96 images or so all of each hour in 15 minute intervals and then it loads the appropriate one for the appropriate time. I wrote

It's not a gif, he's just got ~96 images or so all of each hour in 15 minute intervals and then it loads the appropriate one for the appropriate time. I wrote up a small demo here(http://jsfiddle.net/5uG2u/2/show/ http://jsfiddle.net/5uG2u/2/show/) so you can change the time and see the various mapped layouts of the data.