Launch Date                         5/7/2026

Launch Time                        10:06 a.m.  (14:06 UTC)

Launch Site                        Berkeley Springs High School Courtyard

Berkeley Springs, WV 25411

Launch Site Coordinates    39.61747, -78.23242

Altitude 578 ft (633 ft GPS)

Burst Altitude                      96,317 ft (18.24 miles)

Greatest Speed                   200.226 mph

Coldest Temperature      -67.9 F  (@ 59,173 ft)

Lowest Pressure                   13.83 mmHg (@ 96,317 ft) (0.27 psi)

Landing Time 11:36 am (15:36 UTC)

Flight Time                             1 hour  30 minutes

Landing Site                          Near Strasburg, PA

Landing Site Coordinates  39.931800, -76.163090

Driving Distance                  159 miles

Driving Time                        3 hours

Difference Between Predicted and Actual Landing Sites 2.5 miles

Prediction

Actual Path

Graphs

Observations

• The ascent rate was relatively constant until the balloon burst. (25.0 ft/s = 7.6 ft/s)

• After the balloon burst, the altitude of the payload decreased at a faster rate.

• The descent rate was not linear.  (Average = 60.0 ft/s = 18.2 m/s)

• The pressure decreased non-linearly during the rise.

• The pressure increased faster during the descent.

• The temperature steadily decreased until approximately -45.5 F at 36,239 ft.

• The temperature increased and decreased between -45.5 F to -50.8 F until 56,000 ft.

• The temperature dropped to -63 F between 56,000 ft and 62,804 ft.

• Then, the temperature increased to -28.1 F at the burst altitude of 96,317 ft.

• After the burst, the temperatures changed in the same way as it did during the rise.