Hi Richard

If you recall, I lost a tower to a lightning strike.
Took us forever to figure out why it came down, but we finally did.
Water built up in the leg of the tower, the lighting turned the water
to steam causing the leg to explode.

In some minor cases we found the places where lightning struck through
burn and/or pit marks combined with visual observations of bystanders!
Other times, the foot long melted out section of guttering was a dead
giveaway along with the distortion of the rest of the guttering to
ground.

TTUL
Gary