Below is the link to the APRS radio network that will allow you to track Saturday’s launch. A Google Map view will open showing the balloon’s most recently update location. During the flight, a new data point on the map should appear every few minutes showing the balloon’s current location.
http://aprs.fi/?call=KG6YRB-11
Until Saturday’s launch, the above link will show information from a previous balloon flight launched in October, 2010.
Sample of the balloon tracking map.