Experts and designers of early warning systems have pointed out significant gaps in our ability to predict and warn about flash floods, which are among the hardest natural disasters to prevent. These challenges highlight the need for improved technology and strategies to protect communities at risk. The recent incident in Spain, where a flood alert system was in place but not activated, serves as a stark reminder of the critical importance of reliable and timely warning systems. This event underscores the necessity for enhanced preparedness and response mechanisms to mitigate the impact of such disasters.