Depending on the app you use, three or four strong earthquakes hit off Chile on December 27, 2020 at 9:39 pm UTC. These are called synchronous quakes, each of them having a ‘s-wave’ and a ‘p-wave’ (see below for their meaning). But because those large quakes were SYNCHRONOUS with each other, you can deny, if … Continue reading The 4 synchronous large earthquakes off Chile (2 M6.7 and 2 M6.8) are a true WARNING sign of bigger events to come More