@chrisc8911.bsky.social
Reposted
Looks like a small swarm in the Fontana trend. This M4.2 had a few foreshcoks including a M3.0. The Fontana trend is a NE-striking lineation of earthquakes under the sediments of the San Bernardino Vslley. We believe it is one of the left-lateral striking faults that are south of the San Gabriels.
#AutoEQ A magnitude 4.2 (MI) #earthquake has occurred 4 mi W of Muscoy, CA at 09:32 PDT Jul 31, 2025 [2025-07-31 16:32 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41249496#executive
July 31, 2025 at 4:41 PM
Looks like a small swarm in the Fontana trend. This M4.2 had a few foreshcoks including a M3.0. The Fontana trend is a NE-striking lineation of earthquakes under the sediments of the San Bernardino Vslley. We believe it is one of the left-lateral striking faults that are south of the San Gabriels.
Reposted
I was out on a walk during the M4.1 quake. Not much to say about it. Run-of-the-mill for earthquake country. The most interesting thing is that it is the 3rd M4 at essentially the same location over the last 13 months.
March 10, 2025 at 1:44 AM
I was out on a walk during the M4.1 quake. Not much to say about it. Run-of-the-mill for earthquake country. The most interesting thing is that it is the 3rd M4 at essentially the same location over the last 13 months.
Earthquake. Westlake Village 4.2
March 9, 2025 at 8:10 PM
Earthquake. Westlake Village 4.2
Reposted
The M7.0 earthquake today is at the triple junction of 3 tectonic plates. It is historically the most seismically active part of California
December 5, 2024 at 7:49 PM
The M7.0 earthquake today is at the triple junction of 3 tectonic plates. It is historically the most seismically active part of California