Eastern Spain is bracing for a day of severe weather, with the State Meteorological Agency (Aemet) issuing an orange alert for Tarragona because of intense rainfall. Several other regions, including Aragón, Catalonia, the Valencian Community, and the Balearic Islands, are also under weather warnings as storms and heavy showers move in. The most critical conditions are expected along the Tarragona coast, where precipitation could be particularly strong throughout the day.
Aemet says the current weather pattern is driven by a developing low-pressure system west of the peninsula, drawing warmer air from the south. This is bringing widespread cloud cover across the eastern third of the country and the Balearic Islands, while clouds will build over basic Spain as the day progresses. Most other regions will see clearer skies, apart from some low clouds in the Cantabrian area.
Heavy showers and storms that began the previous day are set to continue, especially along the coasts of Tarragona and Castellón, as well as in Ibiza during the early hours and much of Saturday. The conditions may later spread to other parts of the Valencian Community and reach Murcia by evening. Further instability is possible in the afternoon, with strong storms forecast in Navarra and Huesca, particularly in the Ebro valley and the Iberian system.
Elsewhere, the northern slopes of the Canary Islands are expected to see overcast skies and light rain, while the southern parts will remain mostly clear. Morning fog or mist is likely in the upper Ebro, inland Cantabrian regions, and isolated areas of Huelva and Albacete. Winds across the peninsula will generally be light and southerly. The Cantabrian coast will experience moderate easterly winds, with stronger gusts in Galicia. The eastern third of the country will see light to moderate easterly winds, while the Canary Islands will have moderate trade winds shifting slightly northward in the afternoon.
Temperatures are also set to change. Maximum temperatures are forecast to rise in most of Spain, with a impressive increase in the Cantabrian area and Galicia. Daytime highs, but, are expected to fall in the Levante, Balearic Islands, Catalonia, and the Canary Islands. Minimum temperatures will climb slightly in the southern plateau, the Baetic systems, and the Balearics, but decrease elsewhere and in the Canaries.
Heavy Mediterranean downpours can create localized flood risks because rivers and smaller streams may rise quickly, particularly in low-lying areas and drainage networks. During a separate rainfall episode in October 2026, Meteocat recorded 37.8 millimetres in 10 minutes at Cabrils and 36.8 millimetres in 10 minutes at la Bisbal del Penedès. Catalan firefighters handled 89 incidents between 14:00 and midnight while the INUNCAT emergency plan remained on alert. Protección Civil urged residents to avoid crossing rivers and streams and to take care in areas where water can accumulate.
During that October episode, reported Meteocat warning thresholds included up to 40 millimetres in 30 minutes, 60 millimetres in three hours, and more than 100 litres per square metre in 24 hours in some areas. The figures distinguish warnings for intense short bursts of rain from those based on accumulated rainfall. They relate to that later event, not to the Tarragona forecast described here. Protección Civil later deactivated INUNCAT after the October storm affected areas including Tarragona and the eastern Pyrenees.
These weather developments follow a pattern seen in previous years, when sudden storms and heavy rainfall have caused impressive disruption in eastern Spain. For example, a recent Atlantic storm brought similar alerts and rainfall to Catalonia and the Balearic Islands, showing how quickly weather conditions can change in the region.
Spain's eastern regions are particularly susceptible to intense rainfall, especially during transitional seasons. The orange alert in Tarragona signals a heightened risk of localized flooding and travel disruptions. Residents in affected areas are advised to follow official updates and take necessary precautions as conditions evolve throughout the day.
