Spain's DANA Floods: AEMET Failure or Political Response?

The debate on the DANA: Did AEMET fail, or was it the political response?

Is the Spanish State Meteorological Agency (AEMET) to blame for the catastrophic DANA flooding in Valencia? This is the thesis defended by one side of the debate: AEMET issued alerts that did not match the actual magnitude, creating a "boy who cried wolf" effect that led the population to ignore warnings. According to this view, the red alert on October 29 lacked specific zone details and forecasted 150-180 liters in 12-24 hours, while some areas received 600 liters. The result, they argue, was that no one paid attention: neither politicians, citizens, nor emergency services.

The red alert and credibility issues

AEMET activated a red alert for October 29. The official report, as cited in the debate, announced 150-180 liters per square meter in 12-24 hours without precisely defining the affected area. Critics argue this level of detail is insufficient: if it doesn't specify where the rain will fall, the alert loses impact. They also recall that the agency issues three to four DANA warnings annually that turn out to be mere storms, eroding credibility. "The word 'alert' is even used for 30 degrees in the north," summarizes one participant.

The boy who cried wolf is the expression running through the entire debate. The idea is that an overabundance of alerts has turned every warning into background noise. "Every year we get three red alerts, fourteen orange ones, and days with nothing but yellow," another message mocks. The problem, they add, is that when the real wolf arrived, no one distinguished it from the previous ones.

Technical defense: models and hourly forecasts

In contrast, another current defends AEMET's work. It argues that the agency does not issue warnings for flash floods, but for precipitation, and its forecast was hourly: 90 liters per square meter per hour. If it rains for two hours, that's 180 liters; if ten, 900. From this perspective, the forecast was not wrong. "Those trying to discredit AEMET have no clue," one message concludes.

It is also pointed out that comparing AEMET with French meteorology is misleading: the warning came from an amateur using their models, not the French agency itself. Furthermore, mass mobile alert technology depends on Civil Protection, not AEMET. The discussion then shifts to political responsibility: why wasn't a mass SMS sent when flows in the Poyo ravine were already evident?

The Poyo Ravine: the critical hour

The turning point in the debate is the Poyo ravine. One message provides concrete data: at 18:30, 2,000 m³/s were recorded in that channel. At that time, many affected towns were not experiencing rain. "If you warn people in those towns, they would insult you," notes a participant. The failure, they argue, was not issuing a mass alarm when sensors already showed rising water levels.

The Hydrographic Confederation and SAIH (Automatic Hydrological Information System) appear in several messages as bodies that could have anticipated the flood. "Those who could have predicted something are those monitoring flow rates in the confederations," one message points out. They insist that AEMET's alert only covered up to 18:00 because it focuses on precipitation, not subsequent events.

Missing infrastructure and historical precedent

Another line of analysis points to a lack of infrastructure. It is mentioned that there is no regulation reservoir in the Poyo rambla, despite the National Hydrological Plan including a reservoir in Cheste and containment dikes in the overflowing ravines. "That inaction dates back to Franco," replies another message. The comparison with Valencia city, protected after the 1957 flood, serves as a contrast: there, a new riverbed was built; in the affected municipalities, it was not.

Urban planning also enters the equation. "Why do so many people live in a floodable zone?" it asks. For some, the answer is the lack of protection works in recent decades. For others, it is a land-use planning problem that no administration wanted to address.

Political management: from warning to reaction

The discussion shifts to institutional response. Criticism falls on the central government for not declaring a state of alert or mobilizing the UME (Military Emergency Unit) beforehand. "If Sánchez was calmly in India, it’s because he didn’t imagine what was going to happen," reads one comment. The Valencian regional government (Generalitat) is also targeted: "If they didn't send tons of SMS, it’s because they didn’t imagine what was going to happen." It is also mentioned that the head of emergencies was traveling to Brazil.

The UME receives criticism for its size: 3,000 personnel, of which only a few hundred are mobilizable. "More chiefs than Indians," one message summarizes. The conclusion of this current is that the whole system failed: forecasting, communication, and reaction.

What can be done? Proposals and conclusions

Proposals range from creating a hurricane-like level system (1 to 6) to improving risk communication. "For DANAs, from now on, they should consider implementing a level system," suggests one message. Another asks that maximum-level alarms not be given unless catastrophic: "AEMET is capable of giving you 3 or 4 maximum-level alerts in a year."

The debate does not reach a clear closure. Some continue to blame AEMET; others, politicians; still others, the lack of infrastructure. What is clear is that it cannot be attributed to a single factor. The final irony is left by a message: "We are in a country where aid is offered to a region as if it were a foreign country."

---

Key Data

• AEMET red alert for October 29: 150-180 liters per square meter in 12-24 hours.
• Hourly forecast: 90 liters per square meter per hour.
• Flow rate in Poyo ravine at 18:30: 2,000 m³/s.
• Precipitation in some points: 600 liters per square meter.
• UME personnel: 3,000, of which only a few hundred are mobilizable.