I've learned over the years that some of the weirdest events have a reason for happening if you're willing to dig deep enough to figure out why. That's true for a series of recent earthquakes in Illinois that seemed to happen in unexpected places. There's a USGS map which shows it's not weird at all.
Earthquakes happen often along the New Madrid Fault in Missouri. Most of the time it's one or two every few days, but in the past month there have been mini-swarms totaling more than 30 in just the past 30 days. Oddly many of these have been felt, too.
If you follow earthquakes along the New Madrid Fault Zone, you know it's not unusual to see a quake every few days or so. It is a bit unusual to see more than a dozen quakes over the span of just a few days in Missouri though. That's what's happened this week in the southern part of the Show Me State.