Man I would die of shame if I ever wrote something as bad as
"it’s not yet clear if the increase in seismic activity is anything more than just an unusually high number of tremors."
A geologist friend of mine in the PNW has taught me that this is normal, you can make few predictions and everything is unclear. Every time I ask whether something is connected I get "it could be but only sometimes and we don't know for sure". Though the word "just" is almost always unnecessary.