> ## Content Index > Fetch the complete content index at: https://barna.news/llms.txt > Use this file to discover other available public pages before exploring further. # Severe Storms Forecast for Barcelona from Saturday - URL: https://barna.news/severe-storms-forecast-for-barcelona/ - Published: 2026-10-15T12:17:14.000Z - Updated: 2026-10-15T12:17:14.000Z - Description: A rare reverse-moving cold drop will bring torrential rain and sharp temperature falls to Barcelona from Saturday morning. - Author: Barna.News - Tags: environment, Trending Now ## Unusual Weather Pattern Developing A rare meteorological event known as a retrograde DANA (isolated cold drop) is approaching Catalonia, with Barcelona facing heavy storms from Saturday 17 October 2026\. Unlike typical storms that move eastward across the Northern Hemisphere, this system is moving in reverse due to an unusual atmospheric configuration. A powerful anticyclone extending from North Africa to the British Isles and Russia is bypassing the Iberian Peninsula, creating a C-shaped bubble that traps a cold air mass over the region. This setup will drive maritime winds, warm and humid, from the sea inland, where they will rise against coastal mountain ranges and interact with cold air aloft, generating large storm clouds. ## Rainfall and Flooding Risks Rain is expected to begin on Saturday morning and continue until late Tuesday 20 October 2026\. The most intense rainfall will occur during the night of Saturday to Sunday and throughout Sunday 18 October. Forecasts vary significantly due to the erratic movement of the cold drop. Some models predict total accumulations of 60 to 80 litres per square metre across the region. Others suggest localised downpours could exceed 500 litres per square metre, particularly in areas already saturated by recent rain. Such volumes pose a high risk of flash flooding, especially given the low absorption capacity of waterlogged ground. Authorities are monitoring mesoscale models closely for signs of stationary or regenerating storm cells. --- ## Sharp Temperature Drop Expected Temperatures will fall sharply by up to 8°C within 48 hours. On Sunday, highs are not expected to rise above 15–16°C, creating a distinctly autumnal or even wintry feel. From Wednesday 21 October onwards, temperatures will gradually return to seasonal norms, reaching 22–23°C. By then, rain will have subsided, though some atmospheric instability may persist. > The models are extraordinarily good at describing where there will be more instability, but a strong convective storm depends on much smaller processes. This uncertainty reflects a known challenge in Mediterranean meteorology, where small-scale phenomena such as convective storms can form or intensify rapidly, altering rainfall patterns with little warning. ## What This Means for Residents Residents should prepare for prolonged heavy rain, potential transport disruptions and localised flooding from Saturday. The most critical period will be Sunday, when both rainfall intensity and cold conditions peak. Keep updated via the [Metrópoli Abierta](https://metropoliabierta.elespanol.com/vivir-en-barcelona/20261015/llega-dana-retrograda-traera-fuertes-tormentas-barcelona-litros-descenso-brusco-temperaturas/1003742802939%5F0.html?ref=barna.news) forecast updates and official emergency channels. Avoid unnecessary travel during peak storm hours and ensure drainage routes around properties are clear. --- *Reported by metropoliabierta.elespanol.com, Roberto de Godos Carrera, en.ara.cat, Metrópoli Abierta - Urban Life.* --- ### Related on Barna.News - [Barcelona Lifts Storm Drainage Emergency Alert](https://barna.news/barcelona-lifts-storm-drainage/) - [Polar Air Mass Brings Autumn Chill to Barcelona](https://barna.news/polar-air-mass-brings-autumn-chill-to/)