2011 Guerrero earthquake

Two similar quakes of minor intensity struck the region the next day; however, the strongest and final aftershock registered a magnitude of 4.1 (ML) and occurred at 04:00 in the morning.

[5] Despite relatively strong ground motions, damage to the area was very limited; structures around the epicenter were a mix of fairly vulnerable and resistant to earthquake shaking.

[13] There were no reports of major losses or fatalities in the wake of the tremor, though two police stations located in Acapulco and Marquelia suffered light damage.

[16] Prior to the arrival of seismic waves in Mexico City, seven of twelve earthquake sensors near the coast of Guerrero detected a "potentially significant quake".

[19] In response to the earthquake's occurrence, the Federal District announced the installation of 50,000 seismic alarms in local schools, hospitals, and offices.

Many locals perceived an apparent increase in recent earthquake occurrences, though at the time seismologists registered normal levels of seismic activity in the area.

USGS shake map