The following is an image I generated with my new program (still in development).

The image is displaying Hauksson et al 2011 data, which is relocated events from Jan 1981 through June 2011.

Coloration is by time, starting with red as oldest events, progressing through orange, yellow, green, cyan, blue, and ending with magenta as the most recent events.

Having things colored this way highlights quite effectively those events which are related, having occurred close together in time. You can see individual faults illuminated by quakes of the same color, meaning that little fault plane had numerous events over a short time span.

The most significant information I see in this image is the large swath of magenta quakes at bottom center. These are events associated with the 2010 Sierra El Mayor quake. Although that quake was south of the border, aftershocks occurred well north onto the southern sections of the Elsinore Fault zone. The Elsinore fault extends from the top of the magenta cluster on up through the top left corner of the image.

Drawing from history, about 2 months prior to the M7.3 1992 Landers quake, there was the M6.1 Joshua Tree quake to the south. Aftershocks of this event also migrated northwards, but not quite onto, what would later turn out to be the southern end of the faults involved in the Landers quake.

The second image shows the Joshua Tree quake and aftershocks up to the Landers main shock. Data base and color scheme is the same. Note the small quakes inside the Landers mainshock. These are foreshocks in the 7 hours before the main event.

So, we have this big quake in Baja, which causes activity on the southern Elsinore.... and ....

Who knows? Only time will tell.

Brian