One of my favorite websites is Wunderground.com . It is undoubtedly the best weather site on the web that I've found (Noaa.gov is good too). What I'm here to tell you is that for free, you can get the ad-free version of the website, compliments of yours truly. Just click on the $10 for no-ads, and enter in the code N4Z4N when you get to the pay page. It adds tons of Paul Douglas like capabilities (e.g. zooming on the radar map), and there are no ads. This is some good stuff.
On the other hand, the other Weather Underground were not so cool. Well, cool in a 60's terrorist Black Panther kind of cool, but not really.