I noticed on the USGS earthquake web page that the Challis area has had 208 earthquakes so far this year. Only a few have been over 3.0, but that still seems to be a lot of earthquakes. Do smaller earthquakes ever give a prediction of a larger one in the future?

Question answered by Suzette Payne, Seismologist, Idaho National Laboratory The response to your question of smaller earthquakes giving a prediction of larger ones does not have straight forward answer. Sometimes prior to large magnitude earthquakes, one or more foreshocks occur, but most often not. In the case of swarms, at the beginning earthquakes typically have smaller magnitudes and…