Dana 'Adam': Why the Spanish mainland was hit harder — and what Mallorca must learn

Dana 'Adam': Why the Spanish mainland was hit harder — and what Mallorca must learn

Key question: Why did the low 'Adam' claim lives and cause extreme damage on the Spanish mainland, while Mallorca got off comparatively lightly?

Critical analysis

The figures we know are bitter: four dead on the mainland, severe floods in the Valencia region with up to 700 liters per square meter locally, hundreds of thousands of people temporarily subject to movement restrictions — in short: a force of nature that overwhelmed many systems. Heavy rain in a short time, overloaded riverbeds, roads that suddenly became impassable, and people forced to wait out the situation in houses or on roofs — all this has shown that intense rainfall is no longer just a local disturbance, but a risk with regional force.

Topography and meteorology explain part of it: the combination of Mediterranean air masses and a so-called DANA can produce extremely concentrated precipitation in coastal regions, as covered in Unusual combination: Heat and possible DANA – is Mallorca really prepared?.

On the mainland, river systems such as the mentioned Girona are also more prone to rapid rises in water level because water collects from larger catchment areas. Mallorca did suffer damage and flight cancellations, but it was spared to the extent that the most intense rainfall occurred in different places, a pattern seen in Two Mallorcas in One Day: Why Heavy Rain Affects Us More Than We Think.

What is missing from the public discourse

There is a lot of reporting about rainfall amounts and rescue operations. Less often addressed is the why behind vulnerability: Who cleaned riverbeds in recent years? Where are building permits still granted for areas in floodplains? How good are local evacuation plans, and who regularly inspects pipes, sewers and retention basins? The debate too often focuses on alert levels and dramatic images, not on persistent weaknesses. This gap is discussed in Severe weather on Mallorca: When it really becomes critical — and what's still missing.

A scene from Mallorca

Early on Monday evening I sat in Palma on the Passeig del Born. It did not rain as heavily as on the mainland, people pulled their hoods up, buses drove slower, and continuous bulletins were on the radio. A taxi driver from Portixol said he had stood for hours at the airport roundabout because flights were diverted After the Thunderstorm: Flooded Streets, Mudslides and the Big Question About Mallorca's Preparedness. In a tapas bar the owner opened the door a crack, let guests in and said: "We are awake, but we do not feel as prepared as our colleagues in the north." This mixture of caution and routine: typical for the island, but no comfort when the next DANA costs lives elsewhere.

Concrete solutions

- Maintain river and stream beds more regularly: regional authorities must make cleaning cycles mandatory and fund them. Eroded riverbanks and blocked channels are not natural; they are remnants of unfinished work.

- Create and protect retention areas: land that can absorb water must not be further developed. Municipalities need binding flood-zone maps that apply to building permits.

- Increase sewer and pump capacity: especially in urban areas old systems are quickly overwhelmed by heavy rain. Investments in additional pumps and check valves reduce flooding risks.

- Early warning systems plus local drills: warning SMS messages are not enough when evacuation routes are unknown. Municipalities should conduct emergency drills – including schools, care homes and ferry ports.

- Coordination across levels: when hundreds of thousands of people are affected by movement restrictions, clear lines of authority are needed between state agencies, autonomous regions and municipalities. Responsibilities for rescue equipment, helicopters and evacuation centers must be defined in advance.

Why this also concerns Mallorca

The Balearic Islands are not immune. We feel disruptions at the airport, see boats diverted in the port and read about canceled flights. Once again it becomes clear: resilience is not an abstract word, but concrete infrastructure policy. Water retention in the Serra, tested sewer networks in Palma, reliable emergency shelters in Pollença or Llucmajor — all of this saves lives and money later on.

Conclusion: Dana 'Adam' crossed the line between a weather event and a disaster where prevention, planning and maintenance were lacking. In Mallorca one can now not only breathe a sigh of relief, but use the event as a wake-up call: tackle concrete measures before the next storm hits elsewhere even worse.