Storm Bruna, a powerful weather system, is currently unleashing heavy rainfall and strong winds across mainland Spain, particularly in Galicia and Extremadura. This follows its initial impact on the Canary Islands, including Gran Canaria, as reported yesterday. Meteorological agencies forecast severe conditions to persist over the coming days, with multiple weather fronts expected to cross the affected regions.
The low-pressure system is fueled by an atmospheric river, drawing moisture from the subtropical Atlantic and the Caribbean Sea. This mechanism injects warm, water-laden air directly into the Iberian Peninsula’s Atlantic-facing regions, leading to significant precipitation. The storm was named Bruna by the Portuguese meteorological service, indicating its trajectory and influence across the western European coastline.
In Galicia, initial rainfall occurred last weekend, but the primary impact is anticipated over 72 hours from Monday, with up to four fronts expected. The Spanish State Meteorological Agency (AEMET) has issued a yellow alert for parts of A Coruña, all of Pontevedra, and southern Ourense, where accumulated rainfall could reach at least 60 litres per square metre within a 12-hour period, potentially accompanied by thunderstorms. Winds are also a concern, with gusts exceeding 80 kilometres per hour in specific western areas of A Coruña and Pontevedra, and southwestern Ourense, according to MeteoGalicia.
Intensifying Alerts and Rainfall Accumulations
Extremadura faces a particularly adverse forecast, with conditions escalating since Sunday. Meteorological data up to 7:00 AM on Monday revealed Villanueva del Fresno in Badajoz province recorded 59.6 litres per square metre, making it Spain’s wettest location at that time. Other significant accumulations included Puerto del Pico (Ávila) with 39.8 litres and Valencia de Alcántara (Cáceres) with 39 litres. Strong wind gusts have also been reported, reaching 78 km/h in Hervás, 75 km/h in Llerena, and 71 km/h in Castuera.
Alert levels have been amplified across Extremadura. An orange alert for rain in northern Cáceres, active from Sunday evening, was downgraded to yellow on Monday morning, but similar alerts apply to Villuercas y Montánchez and parts of Badajoz province. Northern Cáceres is expected to accumulate 100 litres per square metre, with total accumulations potentially reaching 200 to 300 litres by Wednesday, and up to 300 litres in some areas by Friday, according to the European Centre for Medium-Range Weather Forecasts (ECMWF) model. AEMET has even activated a red alert for Tuesday, forecasting 120 litres per square metre within 12 hours in some areas, highlighting the severe risk.
Atmospheric River and Broader Implications
The persistent and heavy rainfall across western Spain is a direct consequence of an atmospheric river, a concentrated channel of moisture in the atmosphere. This phenomenon is responsible for transporting substantial amounts of water vapour from tropical and subtropical regions towards higher latitudes, leading to prolonged and intense precipitation events when it makes landfall. Understanding these large-scale atmospheric patterns is crucial for meteorological services like AEMET and MeteoGalicia in issuing timely warnings.
While the immediate impact of Storm Bruna is regional, such weather phenomena have broader implications. The significant rainfall is expected to notably alleviate the intense drought conditions that have affected Galicia, offering a crucial boost to water reserves and agricultural sectors. From an international perspective, the accurate forecasting of atmospheric rivers by global models such as the ECMWF is vital for climate preparedness, impacting global shipping routes, agricultural production forecasts, and the management of water resources in interconnected regions worldwide.
As Bruna continues its passage, authorities will maintain vigilance on cumulative rainfall and wind speeds, especially in the regions under the highest alert. The situation is expected to gradually improve from Saturday in Galicia as the storm’s influence wanes, but the focus remains on managing the immediate risks and assessing the full extent of its impact on infrastructure and the environment over the coming days.
Image: La Voz de Galicia
Sources consulted
- La Voz de Galicia: Galicia, en alerta por las lluvias de la borrasca Bruna
- El Economista: elEconomista.es | Se insta a los hogares españoles a cerrar cortinas y persianas a partir de hoy: los avisos se activan en estas comunidades
- Hoy: Amplían la alerta por lluvia y tormentas: ya se han acumulado 60 litros y rachas de viento de 78 km/h
Adrian Velk is a global affairs journalist focused on breaking news, geopolitics, and societal trends. With a sharp eye for detail and a commitment to accuracy, he delivers timely reporting that helps readers understand the fast-moving world around them. His work blends factual depth with clear storytelling, making complex events accessible to a broad audience.
