Recently, they have all been at one spot. This was a 4.3 that just happened. Most appear to be quite deep, as their intensities are quite low. I have no idea as to what could be happening. When they are this deep, no fluid is touching them, they are a response to regional stresses. I had expected earthquakes to propagate up to the NE but this isn't happening. We'll have to wait.
There is a limit to how much strain energy can be released at one spot. This just has to mean something ominous. :)
ps. deep normal earthquake, indicating compression and longitudinal cracking. Every earthquake here has been like that, they just had an m3.5
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