@Peter-O' It works with Chrome (Mac) and Opera (Mac) but it doesn't seem to work with Safari.

Great job! The radar image goes blank at "6 minutes ago" and then continues with no radar until end of the loop. It would be visually better if the loop ended when the radar data ended. When I first noticed it the radar image ended at "9 minutes ago" and this decreased to 6 when I started to write this.