A large tree was struck by lightning (Figure 1). The home owner claimed interior damage to drywall.
Although the tree was not adjacent to the dwelling it was very large and old. The roots probably extended to nearthe dwelling and there were plumbing lines that lead from the nearby pool to the dwelling.
The interior cracking that was pointed out exhibited cracking with sharp edges and relatively clean fracture surfaces. Also, the cracking exhibited pieces of joint compound that appeared to have exploded off (Figures 2 and 3). And, it could not be explained by another mechanism.
We concluded that the damage was related to the nearby and recent lightning strike.