California-Nevada Fault Map centered at 33°N,115°W
My local beloved volcano has just had activity; an interesting array of micro-quakes. Super heated water or other material is most likely on the move. My gut feeling, way outside of science is that there is an extension of the Mid Pacific Rift that is seeking a way north east, through Landers and Death Valley, to find a path to eventually split California. The Salton Trough and and the Imperial Spreading Zone may very well be a part of this.