Earthquake is a perceptible shaking of the Earth's surface, which is the result of the sudden release of energy in Earth's crust. This means that epicentre of the earthquake lies deep under the surface. Due to the current level of technology scientists cannot conduct any direct observations at the depth where an earthquake starts to grow to provide a proper understanding of conditions (temperatures, pressures, rock materials, etc.). According to Michael Blanpied, associate coordinator of the USGS Earthquake Hazards Program : «To predict earthquakes, we would need to have a good understanding of how they occur, what happens just before and during the start of an earthquake, and whether there is something we can observe that tells us that an earthquake is imminent. So far, none of those things are known.»(Why Can't We Predict Earthquakes? | Mental Floss. (n.d.). Retrieved from http://mentalfloss.com/article/12997/why-cant-we-predict-earthquakes).