I live in Chile, one of the most seismically active countries in the world, and been through several earthquakes. Those lights? Just transformers and power lines blowing up. In the 2010 earthquake [1] we had several >6 Mag. aftershocks for days and we didn't see more flashes after the first shaking, simply because there wasn't power anymore.
Did you see anything like the number of blue flashes from transformers that are in that video? That was what I assumed at first as well, but it seems like far too many, unless there's something different about the way electrical grids are wired up in Mexico and Chile.
[1]https://en.wikipedia.org/wiki/2010_Chile_earthquake