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
2009–18 Oklahoma earthquake swarms policies sold between 2010 and 2016, only 1,136 claims were filed by homeowners, and only 202 received any compensation, under 18% of claimants. Insurers took in $135 million in premiums, but paid out only $4.5 million, $1.2 million of which was on a single home in an upscale Oklahoma City neighborhood. 2009–18 Oklahoma earthquake swarms The 2009–18 Oklahoma earthquake swarms are a series of human activity-induced earthquakes affecting central Oklahoma, southern Kansas, northern Texas. Beginning in 2009, the frequency of earthquakes in the U.S. state of Oklahoma rapidly increased from an average of fewer than two 3.0+ magnitude earthquakes per