The balloon was launched on the soccer fields at WWCC on May 16, 2011 at 2:25:00 pm. The balloon drifted ENE. Walla Walla airport tower was informed about the launch. The balloon reached an altitude of 25,010 m (or about 82,053 ft) in four hours and thirty four minutes of flight time, for an average ascent rate of 1.52 m/s. It then descended in just a little bit more than an hour with an average descent rate of 6.68 m/s. The balloon landed approximately 63.4 miles NE of the launch site in a wheat field.
Here is the flight data from the gps connected to the aprs. File:Balloon launch 5-16-11.pdf