Another one of those nifty amateur balloon launches is scheduled for next Saturday, February 6:
The vehicle will be a 1200g helium-filled latex balloon. The expected burst altitude will be 90,000 feet or higher. The flight is anticipated to last about 2.5 hours from launch to touchdown.
Payload: In addition to ANSR flight computer/cross-band repeater and beacon packages, the balloon train will carry student-built packages containing a variety of scientific apparatus as well as digital cameras to photo-document the flight.
The posting includes links to the APRS tracking pages where you could monitor the flight over the Internet.