1944 San Juan earthquake

The 1944 San Juan earthquake took place in the province of San Juan, in the center-west area of Argentina, a region highly prone to seismic events. This moderate to strong earthquake (estimated moment magnitudes range from 6.7 to 7.8) destroyed a large part of San Juan, the provincial capital, and killed 10,000 of its inhabitants, 10% of its population at the time. One third of the province population became homeless. It is acknowledged as the worst natural disaster in Argentine history.

• http://en.wikipedia.org/wiki/1944 San Juan earthquake