Alaska Airlines plane got nailed by a snow thunder strike coming in for landing other day at Sitka. This area seem to be an attraction for ligthing and they have a high percentage of there planes struck coming in there. They once had 3 in one month hit and all winter strikes
I have to believe the same thing when you said that area attracted lightning!
We had a radio site that was not all that great but it filled the nulls fairly well...but if there was as
much as a black cloud blew over that site it would produce a big lightning strike! It finally got to the point to where
it cost more to stay there than it was worth in performance
I don't know if the ground contained some sort of combination of elements
that caused that or what but I have been down town looking that direction during a storm and noted many cloud to ground strikes there.
The lightning was rough enough to take a 21 ' antenna and make it look like a broom about 4' tall!