6.8 magnitude earthquake shakes Mexico, 1 dead

[BumRushDaShow]

5. That's because the original earthquake was so large

and the Richter scale is logarithmic, where each whole number digit up is 10 times more powerful. So that initial big one can still produce a smaller "big" one.



Depending on what was going on to cause that initial one and the "settling" afterwards, there could be some more "big" (moderate - strong) ones to come.

Before the USGS updated their website, they used to display all the aftershocks around a main quake over time. Now it seems they just show each target one (unless they have a link somewhere to overlay all the aftershocks around a location and I can't find it}.