This is the oldest of this kind of map that I know of. It includes source on the About page.
This one seems much more efficient, at least on Safari. In contrast, the OP link pegs CPU to 100%.
It's using your laptop fan to simulate the sounds of the hurricane.
It is worth noting that the inventors of this particular type of visualization for wind data were Fernanda Viegas and Martin Wattenberg (former IBM, now Google, as far as I can remember). A pity that they are rarely mentioned.