The city activated its municipal emergency plan after heavy rain began. Residents were told to avoid flood-prone areas and secure objects that water could carry away.
On Friday October 2, the city moved its municipal emergency plan into the alert phase after intense rain. Insufficient drainage added to the danger. The first priority was keeping people away from routes where rising water could turn a short journey into a serious risk.
Residents were told to avoid flood-prone areas. They should also bring in outdoor objects that water could sweep away. Torrents, channels, underpasses and other low-lying routes can fill quickly.
Protecció Civil activated the INUNCAT plan in alert mode as the wider episode developed. The most adverse window forecast for October 1 was approximately 14:00–20:00, with severe conditions potentially continuing into October 2.
Drivers faced a particular risk. They should slow down, brake gently and stop when conditions require it. Vehicles must not enter flooded stretches or remain in torrents and other areas liable to flooding. Drivers should also keep a safe distance from other vehicles.
The rule is simple. Never cross moving or accumulated water when another route exists.
If water immobilises a vehicle, reaches a dangerous level on the road or rises to the axle, occupants should get out and move to higher ground. A car can lose stability or become impossible to move even when the water first looks shallow.
The episode was broader than a local Barcelona warning. Catalan News reported more than 250 mm of rain in southern Catalonia, while Meteocat issued a maximum level 6 out of 6 rainfall-intensity warning there during the morning of October 2.
At home, residents should close doors and windows. They should inspect roofs, lightning conductors, drains and downpipes. Accumulated rubbish needs to be cleared. Electrical appliances should be disconnected. Furniture and other loose objects should be moved indoors before runoff can carry them away.
Meteocat warnings reported during the episode put some downpours at up to 40 litres per square metre in 30 minutes. In the most exposed zones, forecast thresholds reached up to 90 litres per square metre in three hours and more than 200 litres per square metre in 24 hours.
Southern Catalonia and the Terres de l'Ebre faced the highest risk. Coastal and foothill areas around Barcelona were also included. Barcelonès and Maresme were among the areas named as facing increased risk. Urban drainage routes, low points and small watercourses needed particular care.
Pets should be brought inside. Toxic products must be stored where floodwater cannot reach them. Essential medicines, warm clothing, personal documents, a mobile phone and a charger should be kept ready. These steps reduce the need to go outside during the worst conditions.
Lower parts of a property need extra care. Residents should not go down to basements or garages during the episode. If water enters the home, turn off the main electricity switch. Anyone in an unsafe building should leave, close the door and move to higher ground nearby.
People caught outside should take shelter in a safe building. They should close its doors and windows. Walking across a flooded route is no safer than driving through one. The warning also covers streams, drainage channels, underpasses and any place that regularly collects water.
Emergency ES-Alert messages were sent in the most affected areas as the forecast worsened. The risk of sudden flooding rose. The danger came from more than accumulated rain. Drainage systems, low roads and small watercourses could overflow quickly.
The Bomberos de Barcelona website provides the full safety guidance for heavy-rain episodes. The advice does not call for unnecessary movement. It focuses on staying indoors when possible, protecting homes and leaving vehicles before water reaches a critical level.
The alert carries a direct instruction. Avoid low-lying routes. Secure exposed objects outdoors. Treat floodwater as a barrier, not a passage. Those steps give residents the clearest way to reduce immediate risk while the municipal plan remains active.
