Hi Todd,
This morning it looks like the USA part is quieting down a little. Elmore Ranch-Superstition Hills pair and Landers-Big Bear pair were within, I think, 12 hours and a few hours respectively of each other. The risk of a M6+ triggered quake likely decreases for any given 24 hour period with time. Of course, the cumulative risk is greater the longer the time interval (more likely to have a M6 in next year than in next day).

If I remember the year right from posts here and USGS, the Laguna Salada last broke with a M7 +/- quake in 1892. We may not know which direction it propagated. But, it might be good to look at the California history of whether any M6 quake followed that one. Of course, the faults are all stressed differently by now.
Chris