Today must be one of the most seismically active days on record. Take a look at this map from the USGS:
The three largest squares correspond to earthquakes of magnitude 8.4, 7.8 7.9 and 7.1 7.0, all within a few miles of each other. There’s also an M6.0, and 18 other quakes greater than M5; all of these occurred within a period of 18 hours. Not surprisingly, thousands of people are moving away from the coast, even if they have to sleep in the open air.
I’ve included the USGS RSS data in my news feeds for several years. Most days there are just a couple of events of M5 or greater; today was extraordinary.