Hopefully this indicates that tectonic stress is being released little by little, rather than building up to be released all at once.

When you look at enough earthquake swarms you eventually realize how many little quakes it takes to keep the big ones from being even bigger. It's a most unsettling epiphanic moment.

Rob, I think you’ve been in Zihua 30+ years.
Do you remember the strongest heathquake you got ?
Thanks!

Yes, it was Viernes Santo of 2014 and I was on my azotea. The first strong quick jolt threw me off my feet, and it kept coming like a roaring freight train, and I thought for sure the stairwell had collapsed, but it didn't and I ran down the stairs and out the door most grateful to be alive. Scariest moment of my life.

And the indicators that time and others with big shakes were several small tremors of at least 4.0 in previous days.