2009 L'Aquila earthquake region saw dozens of significant aftershocks following the main earthquake. The strongest, which hit at 19:47 CEST on 7 April, measured magnitude 5.3 and caused further damage. According to the Italian National Geophysics Institute director Boschi, the aftershock epicentres migrated south-east, thus lessening the risk of further major shocks near populated areas. Aftershocks caused safety problems for rescue crews searching for injured victims trapped in precarious structures in the historic center of L'Aquila, a medieval city. Using cranes and backhoes to remove loose bricks and broken timbers, the crews were aware that even a small aftershock could have triggered the
1985 Mexico City earthquake buildings at Mexico City and all the nation the civil protection authorities conduct evacuation drills to evaluate the evacuation response in the case of an earthquake. On September 19, 2017, 32 years after the 1985 earthquake, Mexico City also faced another earthquake at around 13:14 CDT (18:14 UTC), nearly two hours after the earthquake drills took place. The Soda Stereo hit "Cuando pase el temblor" which was coincidentally released just weeks after the disaster was temporarily banned from airplay in Mexico due to the magnitude of the events of September 19 and 20. However, most music analysts consider the track