The flood of this Sunday, August 14? Aid for Grenoble residents, worry for meteorologists. “We have to go back to Oct 3, 2021 to uncover traces of a rainier working day (59.4 mm)”, writes Météo Grenoble on its Twitter account.
In other text: the 55.4 mm of precipitation that fell in the capital of the Alps that working day, equivalent to all those of the “past 64 cumulative days”, adds the similar page. “If we just take into account the lack of rain in the last two months and the exceptional accumulation observed in 24 hours, we are not much from two information in the year,” reported Stéphane Nedeljkovitch, meteorologist at MétéoNews.
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An atmospheric phenomenon of unusual depth. This is discussed in specific by the large amount of hot air that has been circulating in France for many months. In August, temperatures in Grenoble experienced not dropped below 18.6 ° C before this weekend.
What favor the outbreak of violent storms according to the expert: “If a specified amount of money of humid air, coming from the ocean or the sea, fulfills this mass of vitality [chaleur], this can develop a quite strong thunderstorm with weighty rain and gusts of wind. “
Are other episodes of this type predicted in the coming days? Doable, in accordance to Stéphane Nedeljkovich. Specifically given that the air will be far more loaded with humidity, specifically due to the rainfall this weekend. For its portion, Météo France presently announces a wet Wednesday in Grenoble. With hazard of thunderstorms in the early morning.
