I came across this in doing a little research and didn't know it was out there. I thought some other pilots might be interested in this to play with.

Weather products maturing into the D3 experimental stage of the AWTT process are often made available to the public on the Aviation Weather Center's Experimental Aviation Digital Data Service (ADDS) website at: http://weather.aero/. The intent is to allow public access to this information in order to obtain feedback for product development and improvement. However, it is important to note that weather products displayed on this site are experimental, and although they may appear to be fully operational products, they are subject to change without notification and may not be used for any flight related decisions. At the D4 stage, the FAA approves a weather product for operational use by end users (with restrictions, if necessary), and the product is made available to the public via long-line circuit, satellite, and/or other means of communication.

www.weather.aero