Charles Darwin's description of the 1835 Concepción (Chile) earthquakeDavid BressanThere is currently no way to reliably predict when an earthquake will happen, its strength or length. Earthquakes can vary in their magnitude, the size of the earthquake at its source, and length, lasting from seconds to minutes. Large and small earthquakes start the same way, but there is no way to say when the peak, the maximal magnitude of the quake, is reached. To predict an earthquake we would need unequivocal precursory signals. It was used in the past to predict earthquakes, but it's not clear how radon concentration and earthquakes could be connected.

Source: Forbes November 24, 2017 16:30 UTC