9-26-2014 – 8:00 AM PST:
Over 600 earthquakes, all registering a magnitude of 3.9 or less, are currently striking Mammoth Lakes Ca.
The shaking started at around 3:30 am pst, 9/25 – and have continued throughout the evening and the next day. Frequency and intensity seem to be increasing...
A noteworthy earthquake swarm began a few hours ago ( late afternoon September 25 2014 ) at the base of Mammoth Mountain, located on the flank of the Mono Lake California supervolcano caldera. The whole volcanic complex is known as the "Long Valley Caldera". Originally formed 760,000 years ago, supposedly erupting every 200,000 years.