ShakeMap (Calculated intensity of the Afghanistan earthquake):

View ShakeMap, epicenter and historical seismicity on an interactive map

What happened:

Moderate and dangerous aftershock hit the Afghanistan-Pakistani border on monday one month after the devastating M6.0 earthquake. The new event reached Magnitude 5.1, according to USGS and marks the strongest aftershock so far. It lead to the destruction of several houses, most of them previously damaged by the mainshock. At least 12 people, 10 in Paktina province, 2 in Khost, were injured.

Current earthquake activity in Afghanistan:

In the past 30 days, 4 earthquakes of magnitude 4.5 or higher were detected in Eastern Afghanistan (see map section). Therefore, the earthquake activity of the past month has been much higher relative to long-term trends (more than 20% deviation).

Statistic:

Since 1960, 215 earthquakes larger than Magnitude 5.1 were detected in this region. This makes an average of 3.6 earthquakes larger than M5.1 per year. Therefore, the general earthquake activity is usually very high and quakes of this size have an average recurrence time of approx. 3.3 months (99 days).

Largest earthquakes in this map section* (Afghanistan and nearby)

*Data: USGS (Magnitude 5 +, since 1960)