#earthquake swarm Salton Sea peaked M 4.6 yesterday. It's the 4th swarm in the area in the last 88 years. Previous swarms occurred in 2001, 2009 and 2016. The San Andreas fault section just North has not ruptured since 1680-1690. Estimated average is about 250 years. pic.twitter.com/RFSALIBv0G

— Ditrianum ⚡ (@ditrianum) August 11, 2020