Alcalá de Guadaíra, Spain — A significant explosion at a chemical plant near Seville on Wednesday has prompted health officials to issue a regional alert, as a cloud of toxic smoke billowed over southern Spain, compelling tens of thousands of residents to stay indoors. The blast occurred shortly after 1:20 p.m. local time at the Plainsur facility situated in the La Red industrial park, roughly 16 kilometers southeast of Seville.
Emergency crews acted swiftly, initiating the evacuation of the site and neighboring warehouses. Reports indicate that two individuals sustained injuries: a plant worker suffered burns, while a firefighter experienced health issues at the incident location. The Spanish chemical distributor Plainsur, which occupies an extensive 11,000-square-meter facility, is known for handling various flammable materials, including ethylene and toluene. However, officials have yet to confirm the specific chemicals involved in this incident.
In response to the unfolding situation, local authorities declared a level 1 emergency and activated Spain’s Es-Alert system. This prompted urgent mobile alerts to approximately 77,000 residents in Alcalá de Guadaíra and nearby areas, advising them to stay indoors, shut windows and doors, and wear masks if they need to step outside. The noxious smoke plume was reported visible from over 80 kilometers away.
Firefighters from seven nearby towns, including Utrera, La Rinconada, and Sanlúcar la Mayor, have mobilized to contain the ongoing blaze. While officials indicate that the fire is still active, they also stated it is being brought under control as of Thursday morning. Assessments of air quality are currently underway, but no additional evacuation orders have been issued.
The Regional Ministry of the Interior has not yet issued a nationwide statement, although local officials have raised concerns regarding the potential environmental and health impacts stemming from the incident. The cause of the explosion is under investigation.
This explosion marks the second significant incident involving a chemical facility in Spain within a week, following another fire that prompted stay-at-home orders for 150,000 individuals across five towns in northeastern Spain just days earlier. These incidents come amid recent concerns about a nationwide power outage on April 28 that affected Spain and Portugal, though authorities have dismissed the possibility of foul play.
Emergency teams are continuing to monitor air quality, ensuring that public safety remains a top priority as efforts to contain the fire proceed. Residents are encouraged to stay informed through official updates and to remain indoors until further notice from local authorities.