Flood Marche, what happened
The intensity of the rain recorded yesterday in the Marche had never been detected in the last 10 years. But what happened? And which are the regions in which there have been more floods with damage to people from 2000 to today? Here are the data provided by the Research Institute for Hydrogeological Protection of the National Research Council (Cnr-Irpi)
The disastrous flood that occurred in the last hours in the Marche has so far recorded 9 victims and 4 missing, including two minors. There are hundreds of displaced people and the Council of Ministers has approved a state of emergency for the Region.
“It rained in a few hours a third of what it normally rains in these areas in a year and in some areas it rained twice as much as it rains in summer. It was a quantity of water that spilled over the territories in a sudden manner, causing havoc and death ", explained the head of the Civil Protection, Fabrizio Curcio, who added:" There were moments of terror, with truly extraordinary quantities of water ".
CNR EXPLAINS WHAT HAPPENED IN MARCHE
Worrying atmospheric phenomena that the Research Institute for Hydrogeological Protection of the National Research Council (Cnr-Irpi) studies and analyzes.
As explained by Paola Salvati of Cnr-Irpi, the data recorded by the precipitation monitoring systems of the national pluviometric network that the Institute imports hourly show that in the afternoon-evening of Thursday 15 September the intensity of the rain recorded on the rain gauge of Cantiano (PU) turned out to be the most intense of the last 10 years.
HOW MUCH RAIN HAS FALLED
In particular, Salvati specified, for that rain gauge the cumulative rainfall recorded in the time interval 17: 00-21: 00 was 265 mm. The most violent hourly intensities occurred between 19:00 and 20:00 with 76mm / h, reaching a peak of 90mm / h between 20:00 and 21:00.
These rain measures have increased the flows of streams and rivers that have caused extensive damage and victims in the province of Ancona.
THE PREVIOUS IN THE MARCHE
The Catalog of landslide and flood events with damage to people, created by Cnr-Irpi, highlights that in the areas affected by the disturbance of 15 September, victims have been recorded on several occasions due to flooding of rivers, as already happened for example in 2014 , when 3 victims were recorded in the territories of Senigallia and Ostra Vetere (AN).
VICTIMS DUE TO FLOOD PHENOMENA
Analyzing the data in the Catalog for a broader time period and on a national scale, in the 22 years between 2000 and 2021 the regions with the highest number of victims from flood phenomena were Tuscany (27), Sicily (25) , Sardinia (24) and Liguria (24). During the same period the Marche region suffered various flood events which caused a total of 7 victims.
When known, the database also contains information on the time and ways in which men and women lose their lives due to geo-hydrological events. In general, analyzing the data of the last 50 years, it is found that the majority of men (61% men, 39% women) lose their lives due to the floods and that people who died outdoors turn out to be three times those indoors. .
THE CONDITIONS UNDER WHICH MORE VICTIMS ARE REGISTERED
Traveling by car along the flooded roads is a dangerous condition. In this case, the data show that it is young and adult men who fall victim to it. As for the people who get stuck in the rooms on the ground floor and in the basements, these are mostly adult and elderly women.
The data also analyzed by time slots show that the low light conditions, therefore the evening and night hours, are those during which the highest number of victims was recorded.
HOW TO ARGINATE THE DANGER
The analyzes carried out, affirms the Cnr-Irpi, attest to how much the knowledge and dissemination of information about the ways and circumstances with which the geo-hydrological processes interact with people can increase the awareness of the population about these risks.
This is a machine translation from Italian language of a post published on Start Magazine at the URL https://www.startmag.it/mondo/alluvione-marche-cosa-e-successo/ on Fri, 16 Sep 2022 14:06:15 +0000.