A violent storm hit Asturias, bringing a tornado to Antromero and severe flooding in Oviedo and Avilés. Streets turned into rivers, homes and public facilities suffered damage, and several events were postponed.
Asturias faced a sudden wave of severe weather on Thursday afternoon, as a powerful storm swept across the region, leaving a trail of destruction in multiple 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, damaged greenhouses, and left vehicles and urban infrastructure battered by flying debris and fallen trees.
In Antromero, the force of the wind was enough to rip off or shift several roofs, while stones and tiles shattered car windows. The local community pool, managed by the Mancomunidad de Peñes, suffered significant 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. What is clear is that a sudden downpour, paired with intense winds, struck the area without warning.
Elsewhere, Oviedo experienced rapid flooding as heavy rain overwhelmed drainage systems. Key areas such as Ventanielles and the vicinity of the Palacio de Deportes saw water pouring 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, and rainfall reached 8.4 liters per square meter in just ten minutes, with a total of 11.6 liters in one hour.
Other neighborhoods in Oviedo, including La Argañosa, La Florida, and Ciudad Naranco, reported water damage to commercial premises. The Fábrica de La Vega, set to host the LINK cultural festival, was also affected, 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, resulting in significant surface flooding that disrupted both 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 all 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. This pattern has been observed in other parts of northern Spain as well, as highlighted in recent coverage of severe storms in Galicia (see more on the impact in Galicia).
The tornado in Antromero, however, points to a more specific set of atmospheric factors. Warm, humid air at low levels combined with colder air above created instability, while wind patterns favored the development of intense, localized wind events. The result was a day of sharp contrasts across Asturias: some streets became rivers, hail battered the most affected zones, and damage was reported to roofs, trees, vehicles, and public facilities.
For context, such 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. The recent events in Asturias underscore the importance of robust drainage infrastructure and timely weather alerts, particularly as climate variability increases the frequency of sudden, high-impact storms in the region.
