Yesterday, April 30, 2019, at 10:10 am, a small, magnitude 3.4 earthquake rocked the seafloor 25 kilometers northwest of San Simeon. That’s just offshore from where the Monterey/San Luis Obispo County line meets the coast; between Salmon Creek and Ragged Point. Local media reported it took place on the San Simeon Fault.
In other words, the quake took place immediately adjacent to some of the most unstable and landslide prone slopes in Big Sur. It was fortunate that this quake was so small, because larger – much larger – earthquakes are distinctly possible along the Big Sur coast.
The epicenter of yesterday’s earthquake was just off this segment of the southern Big Sur coast. The cattle grazing in Kozy Kove Meadow make a peaceful, bucolic scene, but it’s worth remembering that the flat is, in fact, the top of an enormous pile of rubble; the remnants of a massive landslide that very recently (in geologic time) slid into the ocean in this location. Read the rest of this entry »