We are not allowed to forewarn Earthlings of impending earthquakes to the extent they would like us to. The rules are simple in this regard. For humans, on Earth at this time in the 3rd Density, earthquakes are a fact of nature, one that creates many opportunities for them to sort out their spiritual orientation. Just watch how the populace responds after an earthquake. Some people risk their lives dashing into shaky building to rescue others, and other people sit and moan, waiting to be rescued. Many and great opportunities. However, lest some deem we, the Service-to-Other Zetas, to be cold-hearted and cruel, be aware that this is not our rule, but a firm rule we must abide by as visitors to your planet. No interference. Should we break this rule, we would no longer be allowed to be visitors.
With that in mind, we will tell you what we can. We cannot warn you ahead of time, saying, for instance, on such a day, in such a place, at such a time, an earthquake of magnitude such will occur. However, we ourselves are able to come close to this type of accuracy. Here's how we do it.
The Earth, as just about everyone knows, is covered by plates that move about and grind against each other. This grinding action is described variously as a head-to-head push, a sliding under or over, or a gliding along the edge on the way to someplace else. A place where this is occurring is called a fault line, as being a faulty place in the surface of the Earth, one would assume. Now, where humans spend a lot of time sticking probes into the Earth, and trying to guess at the tension deep underground and thus the probability of a near term earthquake, they would do better to place the plate personalities into a computer and let the computer tell you where the next bust is going to be. How would this be done? Humans have a pretty good handle on what the plates are, and where their boundaries are. Put that into the computer. Humans also have a pretty good handle on the direction the plates are moving in, as they are staring at the results after every earthquake. What they don't know is the degree of pressure, and how to restate this pressure after a quake, which eases the tension in the surrounding rock.
This can be done mathematically, if one takes into consideration the following factors:
Tinker with this a bit. Test it against actual earthquake Data, which arrives daily from around the world. Try prognosticating a bit, and get a reputation for accuracy. Whatever you do, don't just sit there doing nothing!