Background
A certified flight instructor (CFI) and a student pilot conducted a training flight after obtaining a preflight weather briefing through the flight school's computer using CIRRUS WX software. The briefing advised that present weather conditions were favorable, but cautioned about the potential for afternoon thunderstorms.
Flight Details
At approximately the same time the flight departed, the local Automated Flight Service Station (AFSS) was advising subsequent flights that a line of thunderstorms was approaching from the west much more quickly than anticipated, and recommended reconsidering flying at that time. The accident flight successfully completed its first leg.
Accident
On the return leg, the flight encountered unexpectedly strong winds during the approach for landing. The CFI assumed control of the airplane, but altitude and heading control were lost when the aircraft encountered severely gusting winds. The flight subsequently collided with terrain short of the intended landing point.