Not sure where to post this question... I've been unable to get the model runs to animate... I am using this site: http://moe.met.fsu.edu/tcgengifs/
It worked for me last season! Maybe that's why it's not working, it's an old link? I can get to the site and view each model at whichever hour increment I choose, but if I choose "animate," the screen just sits at 0 hours.
Try giving it some time. Sometimes, the animations have been slow to load because of traffic on the server. Late nights plus around 2 & 8 am/pm are the worst times to hit it (trust me; I can hear the machine right next to me making noise...we run a lot of stuff other than that there too). Also, it seems Firefox (and intermittently Internet Explorer) have trouble with the loops. Try clearing out your browser's cache of stored files & cookies, then check out the website.