This evening, secondaries in all locations were active. So it is possible that the activity today down in El Centro is only a prelude to a much larger event. I'm not getting anything on my primary indicator that would indicate a much larger event, but because of my limited monitoring time, a larger event measuring M6+ wouldn't surprise me.

Alternatively, the secondary activity could be feedback from the El Centro activity.

So to just play it safe over the next 4 days for those of you in the Central/Southern California areas, watch where you are keeping away from things and places that can fall on you, check those supplies, and keep those shoes and flashlights next to the bed (maybe in a bag that is latched onto the bed so you know where to find them in the middle of the night).

Dennis