Topics

U.S. Geological Survey
California earthquake swarm continues, but slows
California earthquake swarm continues, but slows

The earthquake swarm in Mammoth Lakes continued into Saturday, but it showed signs of slowing. More than 700 small quakes have been recorded in the Mammoth area since Thursday, but the last one of 3.0 magnitude or greater occurred Friday afternoon. And the frequency of the quakes has declined significantly. Experts at the U.S. Geological Survey said the quake swarm is one of the largest in the past decade. Earthquake swarms are not uncommon to this region in California’s Eastern Sierra. Countless small faults crisscross the area known as the Long Valley Caldera, Shelly said. This roughly 20-mile-wide crater-like depression, adjacent to Mammoth Mountain, was formed from ash and...

Loading