On April 25 Nepal experienced its most deadly earthquake for more than 80 years. This map shows the time, location and strength of the quake and the aftershocks.

By Kenneth Macleod
Monday, 27th April 2015

The 7.8 magnitude earthquake in Nepal on Saturday, April 25 is the most deadly earthquake in Nepal for more than 80 years.

This map shows the location, time and magnitude of the earthquake and aftershocks that have killed thousands in Nepal, as well as India, Bangladesh and China.

Data is a real time feed provided by the US Geological Survey, showing earthquake activity from 25 April 2015 to 25 May 2015, within a 500km radius of Nepal.

SOURCE: http://earthquake.usgs.gov/

Cycle through earthquakes and aftershocks:

For each incident reported by US Geological Survey between 25 April 2015 and 25 May 2015, within a 500km radius of Nepal.

Legend:

Magnitude: 7 or higher
Magnitude: between 6 - 7
Magnitude: between 5 - 6
Magnitude: 5 or lower
Mount Everest

Chart showing earthquakes and aftershocks from 25 April 2015 to 25 May 2015.

"The magnitude is a number that characterizes the relative size of an earthquake. Magnitude is based on measurement of the maximum motion recorded by a seismograph and the magnitude scale is logarithmic. One whole unit of magnitude represents approximately 32 times the energy. This explains why big quakes are so much more devastating than small ones. The amplitude ("size") differences are big enough, but the energy ("strength") differences are huge. The amplitude numbers are neater and a little easier to explain, which is why those are used more often in publications. But it's the energy that does the damage. For example, a magnitude 8.7 is 794 times bigger than a 5.8 quake as measured on seismograms, but the 8.7 quake is about 23,000 times STRONGER than the 5.8." (USGS)