UTC time Lat. We are working on correcting this as soon as possible. The focal mechanisms of the larger events and the distribution of aftershocks indicate southward unilateral rupture on one of the strike-slip faults involved in the Joshua Tree and Landers earthquakes in 1992. The M5.0 was felt as far away as San Diego. Yes, it is normal to still be having occasional moderate aftershocks seven years into the sequence, if the mainshock was a Mw7.3, as Landers was.
Aftershocks actually become less frequent with time, rather than smaller, as is commonly believed.
The M5's can still happen late in the sequence, they are just spaced farther and farther apart in time. It appears to have been felt as far away as the Corona area. We don't have any 'felt' reports on either of these small quakes, but the latter could easily have been felt. We recorded and analysed 168 earthquakes in the past week. Click here to see a summary and map .