Asturias faced a sudden wave of severe weather on Thursday afternoon as a powerful storm swept across the region, damaging several municipalities. The most striking incident occurred in Antromero, Gozón, where residents were caught off guard by a tornado shortly after 4 p.m. The phenomenon tore through rooftops and damaged greenhouses, while flying debris and fallen trees battered vehicles and urban infrastructure.
In Antromero, the wind ripped off or shifted several roofs, while stones and tiles shattered car windows. The local community pool, managed by the Mancomunidad de Peñes, suffered impressive structural damage to its cover, though the facility was closed at the time and no injuries were reported. The Spanish meteorological agency AEMET has yet to confirm whether the event was a weak tornado or a wet microburst, as Antromero lacks a dedicated weather station for precise analysis. A sudden downpour, accompanied by intense winds, struck the area without warning.
Elsewhere, heavy rain overwhelmed drainage systems in Oviedo, causing rapid flooding. Basic areas such as Ventanielles and the vicinity of the Palacio de Deportes saw water pour into buildings, including the sports hall, where the parquet floor was submerged. Uría Street was also hit by large pools of water, and even waste containers were swept along the road. Hail accompanied the storm. Rainfall reached 8.4 liters per square meter in just ten minutes, with a total of 11.6 liters in one hour.
Other Oviedo neighborhoods reported water damage to commercial premises, including La Argañosa. La Florida and Ciudad Naranco also saw damage. The Fábrica de La Vega, set to host the LINK cultural festival, was affected too, forcing organizers to postpone the event. In Avilés, the Meanas area saw more than 10 liters of rain per square meter in under an hour, causing impressive surface flooding that disrupted traffic and sewage systems. The Suárez Puerta stadium's locker rooms were inundated, and Corvera also reported localized flooding due to the intense rainfall.
These incidents were linked to the unstable atmospheric conditions forecast for the day, which included the risk of strong or very strong gusts and heavy showers. The rapid accumulation of rain, rather than the total daily amount, proved critical: when storms release large volumes of water in a short period, drainage networks often cannot cope, leading to flash floods and submerged streets. The same pattern has appeared elsewhere in northern Spain, as recent coverage of severe storms in Galicia reported (see more on the impact in Galicia).
The tornado in Antromero points to a more specific set of atmospheric factors. Warm, humid air at low levels combined with colder air above to create instability, while wind patterns favored intense, localized wind events. Asturias saw sharp contrasts that day: some streets became rivers, hail battered the hardest-hit zones, and reports cited damage to roofs and trees, as well as vehicles and public facilities.
Extreme weather events are not uncommon in northern Spain, especially during periods of atmospheric instability. Local authorities typically monitor forecasts closely, but the unpredictable nature of phenomena like tornadoes and microbursts makes real-time response challenging. Recent events in Asturias show why strong drainage infrastructure and timely weather alerts matter, particularly as climate variability increases the frequency of sudden, high-impact storms in the region.
