Weather alert: Aveyron on orange alert for rain and thunderstorms with overflows predicted from the Tarn in the next 24 hours

Ce jeudi matin, au niveau du pont Lerouge à Millau, le Tarn est déjà à des hauteurs de débordement. MIDI LIBRE – F.MAYET

Classified in orange rain-storm alert, Aveyron will experience, this Thursday, October 17 in the afternoon, heavy rainfall with, locally, up to 60 millimeters of accumulation on already wet soils. At the same time, the Tarn will reach overflow levels, like the Dourbie in the Nant sector.  

This Thursday, October 17, during the afternoon, a rain and storm system will approach Aveyron, placed on orange alert, from the west, moving very slowly towards the east. As it passes, the precipitation will be particularly intense with accumulations of 20 to 40 millimeters in the department and locally, 50 to 60 millimeters, on already particularly wet soils. The storm cells are expected to subside by early evening.

The rains, however, will linger until the morning of Friday, October 18, before also fading away. In total, over the episode, accumulations of around 50 to 70 mm are expected in the department, and locally 70 to 100 mm in the north-west of Aveyron. It should be noted that these stormy phenomena, potentially quite violent, should be accompanied, beyond the high rainfall intensities, by a risk of significant average hail and a risk of strong to very strong gusts of wind, potentially between 80 and 100 km/h.

Risk of a significant flood of the Tarn

At the same time, the hydrological services are predicting a significant flood of the Tarn in the next 24 hours in the municipalities of Aguessac, Compeyre, La Cresse, La Roque-Sainte-Marguerite, Millau, Mostuéjouls, Nant, Paulhe, Peyreleau, Rivière-sur-Tarn, Saint-André-de-Vézines, Saint-Jean-du-Bruel and Veyreau. The Mediterranean episode will continue until the night of this Thursday 17 to Friday 18 October with 2 to 3 peaks of intensity.

At the Saoutadou footbridge, closed since this Wednesday in Millau. MIDI LIBRE – F.MAYET

Currently, this episode is already causing overflows in the Montbrun and Florac areas. After a temporary decrease in the afternoon of this Wednesday, a reactivation of the rains is underway. The water levels of the rivers have started to rise again and this will continue all day on Thursday 17 October until reaching their maximum levels on Thursday evening or even on Friday night 18 October.

Overflowing of the Dourbie in the Nant area

In addition to the Tarn and the Tarnon, on Thursday evening, the first overflows could also affect the Dourbie in the Nant areaand to a lesser extent, the Jonte in the Meyrueis area. In the Montbrun area, these reactions should lead to widespread overflows.