The violent weather that affects a large part of the country, the Southwest in particular, continues on Monday. Météo France thus keeps the Landes and the Gironde in red vigilance (level 4 of 4). Twenty-six other departments remain vigilant orange (level 3 of 4).
Details of the departments on alert. A very large part of the country is at least on yellow alert (level 2 of 4) due to rain, floods and wind. Red vigilance concerns the Landes and the Gironde because of the rains. The Landes are in orange for the floods, the Gironde in yellow.
The 26 departments in orange vigilance due to rain and / or floods are as follows: Aube, Charente-Maritime, Côte-d'Or, Haute-Garonne, Gers, Indre-et-Loire, Loir-et-Cher, Loiret, Lot-et-Garonne, Haute-Marne, Pyrénées-Atlantiques, Hautes-Pyrénées, Haute-Savoie, Paris, Seine-et-Marne, Yvelines, Tarn, Tarn-et-Garonne, Vendée, Vosges, Yonne, Essonne, Hauts-de-Seine, Seine-Saint-Denis, Val-de-Marne and Val-d'Oise.
Levels reached once a century. In two days, it is cumulative precipitation seen once a century on average that can be achieved. This Monday morning, it is still raining up to 20 mm (20 liters per square meter) from the Gironde estuary to Poitou, specifies the meteorological organization.
It is the chain of precipitation which is remarkable, notes Météo France, "the stormy character being drowned in the mass". “Between Sunday afternoon and Monday noon, periods of heavy rainfall sometimes give exceptional quantities over Aquitaine on already saturated soils. "
From Sunday to this Monday afternoon, in 36 hours, the cumulative amount should vary between one month to two months of rain. This corresponds to levels seen once a century on average.
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The improvement will be made gradually Monday afternoon from the coast.
Midouze and the middle Adour under surveillance. "The level increases will continue on the watercourses in vigilance", explains Vigicrues, the organization in charge of monitoring the level of the watercourses. “They are more marked on the rivers of the Landes department, and in particular on the Midouze and the middle Adour section, on which the levels of damaging overflows should be reached. "
🌧 With the abundant rains, the first floods are observed in the southwest. In Villeneuve-de-Marsan (Landes), the Midouze is already 50 cm above its benchmark flood of March 2006! (via @Vigicrues) pic.twitter.com/Otx84NULw7
- Cities Weather (@Meteovilles) May 11, 2020The Baïse, Agout and Thoré basins are also under surveillance. The upstream Adour and the Gave d'Oloron should remain at moderate overflow levels.
Hundreds of firefighters' interventions and roads cut. The prefecture of New Aquitaine and the Gironde reports that 321 interventions of the emergency services have already taken place at 6.30 am on Monday, mainly for flooded premises. No casualties were reported; 19 people had to be "put in safety".
Secondary roads are cut in the south of the Gironde, the Libournais and the Haute-Gironde. It is recommended to limit travel there.
In the Landes, 110 firefighters have already taken action. Slightly more than a dozen roads are cut, mainly due to falling trees. On the D651, a bridge partially collapsed.