Hello Don,

Looks like it has been awhile for a larger quake there. Last one was in 1899 and the larger one in 1812 was felt over a large area. I believe you had a site about the 1812 quake doing damage to the Mission at San Juan Capistrano. Three of the identified ruptures at the Wrightwood Gully clearly coincided with the trenching work done by Seih and Fumal in the Oasis area of the Coachella Valley.
This by memory, if that serves me correctly. Thanks for all the info on this area Don. That little swarm is out of the ordinary.

glen

• Historic Quakes