Catalonia, Aragon and the Balearic Islands face orange-level weather alerts. Intense rain and hail are expected, along with strong winds. Authorities warn of local flooding and dangerous sea conditions.
Weather authorities have issued an orange alert for Catalonia and Aragon this Monday as both regions prepare for intense rainfall and severe storms. The alert also covers the Balearic Islands and signals a large flood risk, with hail and damaging winds also expected. The most critical period is forecast from midday through the evening. Spain's official meteorological warnings come from the Agencia Estatal de Meteorología (AEMET), whose regional system tracks rain and thunderstorms, as well as hail, wind and coastal conditions.
In Catalonia, the orange warning will be in force from 12:00 until the end of the day. The heaviest downpours are forecast for the Valle de Arán and parts of Lleida and Barcelona provinces, where rainfall could reach up to 30 litres per square metre in one hour. Storms may bring hailstones exceeding five centimetres in diameter, alongside very strong wind gusts, especially in Lleida. Orange signals impressive danger, above the lower yellow warning level, and calls for close attention to local conditions.
Aragon faces similar risks, with the orange alert in effect throughout the day. The province of Huesca is particularly exposed to heavy rain and hail, with precipitation rates matching those expected in Catalonia. Strong winds are also forecast, raising the risk of localised damage and travel disruption.
Meanwhile, the Balearic Islands are under an orange alert along the Menorca coastline, where authorities have flagged the risk of a “rissaga,” a rapid oscillation in sea level that could reach up to 1.2 metres. Such changes can affect harbours and boats, as well as coastal infrastructure, making the marine warning relevant beyond the immediate shoreline.
Seven other autonomous communities, Andalusia, Cantabria, Castilla y León, Castilla-La Mancha, Extremadura, Galicia and Navarra, are on yellow alert for rain and storms, indicating a lower but still impressive risk of adverse weather. Spain's colour-coded system signals rising levels of weather danger. Civil-protection authorities can issue public guidance and, when required, send targeted ES-Alert messages to mobile phones. Residents should follow official updates, take care around flood-prone areas and call 112 in an emergency.
Recent weeks have brought a series of severe weather events in Spain, with similar alerts issued earlier this summer. A previous Atlantic storm in August brought heavy rainfall and triggered widespread warnings in Catalonia and the Balearic Islands, highlighting the regions' vulnerability to sudden shifts in weather.
Orange warnings signal a large threat to people and property, not a routine change in the forecast. Intense rainfall can cause flash flooding, while hail and strong gusts create hazards on roads and risk damaging trees and structures, particularly in mountainous and coastal areas. A rissaga can rapidly change sea levels, affecting harbours and moored vessels. Timely official alerts and attention to local guidance help reduce exposure when severe conditions develop.
