Don't panic this Wednesday, October 15, 2025, if your phone suddenly starts screaming an alert! It's perfectly normal, as the French have already experienced several of these since the introduction of thisnationwide alert system, which warns of danger in real time. This time it's a simple test, used for thesimulation exercise of a major flood on the Seine (HYDROS 25) already in place since the beginning of the week.
Paris flooded: special flood drill for Parisians on October 13, telephone alert?
This Monday, October 13, 2025, a new full-scale crisis exercise will be carried out in the center of Paris, to test the measures to be put in place and the reactions of residents, in the event of major flooding of the Seine. [Read more]
If your phone is ringing this Wednesday, it's simply because you're in the large area that would be affected if the Seine decided to act up. The alert will display an explanatory message, clearly stating that this is an exercise, and that you should avoid contacting the emergency services to avoid saturating the emergency and authority lines. No danger is approaching, so don't panic! And don't try to put your phone on silent to escape - it'll still ring!
Paris flooded: special flood drill for Parisians on October 13, telephone alert?
