I would've gone with MADIS data, although interpolating that data over the area without sensors could be tricky, or perhaps could be worked in. Additionally it would be better if it had a more traditional slippy maps interface, was less "artsy," and like another poster on here had some labels. It would be great to also explore if highlighting gusts or or other straight-line wind type events could be shown as propagating and dispersing in areas where higher resolution sensors are located. Anyway, now that I've typed this, I guess you didn't really ask :P