Great logic. Apparently the recent storms did no damage to MY house, therefore the storm didn't happen.
I checked the numbers - it happened, 22 were added, then after a 'zone refreshed' it was reduced to 11.
Bugs are inconsistent, so many variables involved. I asked if anyone else had experienced it. Anecdotally 2 of my guild mates have seen inconsistencies too. You are lucky, but just because you are lucky to have avoided it doesn't mean there isn't an issue.