Residents across Granada province felt two tremors on Sunday. The strongest, recorded at 15:38 local time, reached a magnitude of 3.7 and had its epicenter in La Malahá, just six kilometers below the surface, information from the Instituto Geográfico Nacional (IGN). It was strongly felt in the city of Granada and across its Metropolitan Belt, prompting an immediate response from local authorities and residents.
Earlier in the day, at 13:18, a smaller earthquake struck near Loja. Its magnitude was measured at 1.6, and its depth was recorded as zero kilometers, making its effects perceptible nearby. No injuries or impressive damage have been reported, but the shallow quake heightened awareness among local residents.
The tremors came just days after a magnitude 3.0 earthquake was registered in Gor on July 21, also causing concern in the Accitania region. The recent sequence is a reminder of Granada's persistent seismic risk. The IGN monitors seismic activity and maintains the national earthquake catalogue, whose data help characterize tremors.
Granada's vulnerability to seismic events is not new. The province lies in a major seismic zone shaped by the interaction of the Eurasian and African plates across southern Andalucía and the Alborán region. An expert interviewed by Diario de Sevilla identified Málaga and Almería, with Granada also among the Andalusian provinces most prone to earthquakes. The outlet reported an average of about 1,800 earthquakes a year in the Granada and Vega area, most too weak to cause damage. The area's history also includes the destructive 1884 earthquake in Alhama de Granada, which severely affected Arenas del Rey and nearby municipalities.
Regional hazard assessments based on IGN studies identify all 174 municipalities in Granada province as places where an earthquake reaching intensity VII may occur over a 475-year return period. That figure is a statistical measure of hazard, not a prediction that such an earthquake will happen exactly once every 475 years. Intensity describes the effects of shaking at a location, while magnitude measures the size of the earthquake; they measure different things. Andalucía's hazard assessments also identify areas where intensity VIII is possible, a level that can mean large damage to vulnerable buildings.
The Granada metropolitan basin is also an area of ongoing tectonic deformation: surrounding mountain ranges rise while the basin subsides relatively. Jesús Galindo, director of the Instituto Andaluz de Ciencias de la Tierra and a professor of Geodynamics at the University of Granada, has attributed this regional process to tectonic extension. Discussing recent ruptures, Galindo described small segments associated with the extension of the Dílar River fault toward the basin, rather than the creation of a new fault. Reported rupture dimensions of about 2.5 to 3 kilometers in length and roughly five kilometers deep help explain why no surface fracture was visible.
Local authorities regularly review emergency protocols to prepare for more impressive seismic events. The strength of shaking people experience depends on magnitude as well as an earthquake's depth and the local ground conditions; distance from the epicenter also matters. The province's hazard profile makes ongoing monitoring and municipal preparedness impressive, even when individual tremors cause no reported damage.
Recent incidents elsewhere in Spain, including mass evacuations triggered by a major wildfire in Madrid, illustrate the range of natural risks the country faces. For example, thousands were displaced in Madrid due to an uncontrollable blaze, showing how quickly emergencies can escalate and disrupt daily life. In Granada, the focus remains on monitoring seismic activity and staying ready for further developments.
Spain's national emergency services advise residents in seismically active regions such as Granada to stay informed about safety measures and follow official guidance during and after tremors. Sunday's earthquakes caused no reported casualties or major disruptions.
