Precipitation caused by a “Stationary thunderstorm” reached Monday evening “50 mm in two hours”.
Thunderstorms accompanied by heavy rains caused flooding on Monday, June 21 in Reims (Marne) for the third time in two weeks, but also in several municipalities of the Somme, said the prefectures of the two departments.
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In Reims, a “stationary thunderstorm”, located above the center and to the east of the agglomeration, hit around 7 pm. Precipitation reached “50 mm in two hours”, indicated the prefecture. At around 11:30 p.m., the authorities counted 70 interventions by firefighters and around 20 still in progress. At 8:30 p.m., 900 homes were without electricity, but the situation was resolved in the evening, with the prefecture only counting 30 shortly after 10 p.m.
In the center of Reims, the floods were particularly concentrated around Avenue Jean-Jaurès, affected for the third time in two weeks. In this location, “We have a phenomenon of runoff, of concentration”, declared the Prefect of Marne Pierre N’Gahane on BFMTV. But “Things are recovering and the storm cell is gradually shifting”, he assured. “The phenomenon was very violent. All the water falls in 20 minutes and drains away in half an hour. Avenue Jean-Jaurès is a low point in the city and all the water flows there ” without being able to be absorbed, explained to AFP the mayor of Reims Arnaud Robinet.
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“The services of Reims and Greater Reims will meet on Wednesday to study the situation” and will meet the traders, he added, specifying “That in the long term, the development work (necessary to ensure that the water evacuates better editor’s note) represent 15 million euros ”.
In the Somme, “Strong thunderstorm activity” Monday evening crossed the department from West to East, according to the prefecture, causing “Runoff floods” and the overflow of certain watercourses. The municipalities of Gamaches, Frettemeule, Maisnières, Poix-de-Picardie, Ponty, Boves, Sains-en-Amiénois or Maigneville are particularly affected. In Lœuilly, a campsite had to be evacuated and a dozen people sheltered in the village hall, details the prefecture in its report at 10:30 pm The departmental fire and rescue service (SDIS) of the Somme has identified 130 interventions and 70 firefighters engaged, adds the prefecture in this situation.