Yes, all of this happened in one month. It's not exactly normal for this much to happen in a single month, but perhaps you'll get lucky, and something like this won't happen again.

[Although he sincerely doubts it.]

The buildings repair themselves, apparently. Or perhaps the Malnosso come down and fix them while we're not looking. It's not very likely though, given the magnitude of the damage and how quickly it was repaired.