A life-changing event
The DANA of October 29 has left a deep mark on Valencian society, causing a tragedy that has affected thousands of families. With more than 200 fatalities, this weather phenomenon has transformed streets and communities, leaving a bleak landscape.
Understanding the phenomenon: what is a DANA?
DANA, or isolated high-level depression, is a phenomenon that occurs when a mass of cold air becomes trapped at high altitude. When this mass combines with the warm and humid air of the Mediterranean, intense storms arise that can cause torrential rain.
Exceptional weather conditions
The magnitude of DANA on October 29 was due to several factors. As professor María José Estrela explains, his stay in the region generated perfect conditions for the formation of devastating storms, with accumulated rain that exceeded 490 liters per square meter in some locations in less than 24 hours.
The infrastructures to the test
The region’s drainage infrastructure was not prepared to handle such an amount of water in such a short time. The Poyo River experienced a six-fold increase in flow, catastrophically flooding roads and villages.
The role of climate change
Experts warn that climate change is exacerbating the frequency and intensity of these weather phenomena. Professor Estrela points out that the waters of the Mediterranean are warming, providing more energy to storms, which increases their violence.
The human dimension of tragedy
The excessive urbanization of the areas around the Poyo ravine has contributed to amplifying the impact of DANA. Densely populated areas were not only overwhelmed by the waters, but the lack of space for drainage caused the water to stagnate, reaching levels of up to three meters in some places.
Late reaction and future needs
The institutional response to the emergency was insufficient, with alerts arriving too late to avert the catastrophe. Experts underline the urgent need to improve warning and preparedness systems for these phenomena, which will most likely continue to increase in intensity due to climate change.
Reflections on the future
The Valencia DANA has highlighted the vulnerability of communities to climate change and the need to adapt our infrastructure and response mechanisms to better face the future. The tragedy should serve as an impetus for greater awareness and preparation for weather adversities.