07h18: This morning, Météo-France noted a remarkable episode of very heavy precipitation in progress on the mountain range, and a high risk of avalanches. Without forgetting a risk of significant floods on the Pyrenean rivers and very important on the Gave d’Oloron, downstream of the massif. In all, five departments remain on red alert for flooding and / or rain-flooding phenomena. After the passage of the Pyrénées-Atlantiques and the Landes in red for flood risks, Météo-France placed the Hautes-Pyrénées, Haute-Garonne, Ariège and Pyrénées-Atlantiques on Sunday evening in maximum rain vigilance.flood.
We will keep a moderate activity, sometimes quite strong (rainfall intensity between 5 and 10 mm / h), and a rain-snow limit above 2000m at the end of the night and Monday morning. These rains will therefore locally generate overflows of watercourses, or even landslides or mudslides. The rainfall intensities will gradually weaken in the afternoon, justifying the end of red vigilance and a return to orange vigilance, to be refined however during the day.
The rain-snow limit will decrease from the beginning of the afternoon on the east of Ariège, and later at the end of the day and evening on the west. In the evening, it becomes between 1200m on the Ariège and 1600 / 1700m on the Western Pyrenees, with less precipitating activity. This rainy episode will end at the end of the night of Tuesday in the east and later in the morning of Tuesday more in the west.
The accumulations of precipitation will become significant over all the Pyrenean departments. On the episode (in about 48 hours between Sunday and Monday), we expect accumulations of the order of:
– 50 to 80 mm in the plain
-100 to 130 mm on the first foothills, valleys and foothills.
-150 to 250 mm in the mountains.
It should be noted that the melting of the snowpack present below 2000/2200 m will help to reinforce these accumulations.
– VigiMétéoFrance (@VigiMeteoFrance) January 10, 2022
Sunday January 9, 2022
22h48: This Sunday evening, Météo-France announced that five departments were now on red alert for flooding and rain-flooding phenomena. In addition to the Landes and Pyrénées-Atlantiques already placed in red during the day, the Hautes-Pyrénées, Ariège and Haute-Garonne are added to this list.
4:14 p.m.: Météo France places the Landes and the Pyrénées-Atlantiques on red vigilance for floods, according to a press release published at 4 p.m. this Sunday. Seven departments and Andorra have been placed in orange vigilance.
Météo France has placed the Pyrénées-Atlantiques and the Landes, where very significant amounts of precipitation are expected on Sunday evening, on a red flood alert. The Gave d’Oloron, which flows from the Pyrenees in the two departments, has been placed in red vigilance and could experience “very significant overflows” from Monday morning, Vigicrues said in his last bulletin.
10:26 am: Météo France places the departments of Aisne, Gers, Landes on gold vigilanceangel for “flood” and “flood”, and the Pyrénées-Atlantiques as well as the Hautes-Pyrénées on orange alert “flood”.
Météo-France now places 8 departments on orange vigilance for heavy rains and risk of flooding. This episode of heavy rainfall now also concerns Pyrénées-Atlantiques, Hautes-Pyrénées, Haute-Garonne and Ariège, the departments of Gers and Landes. Activated this Saturday, the orange flood vigilance remains in place in the North and the alert has been extended in the Aisne.
8:01 am: Météo-France placed 5 departments located in the southwestern quarter of France on orange vigilance this Sunday due to heavy rains. This episode of heavy rainfall concerns the Pyrénées-Atlantiques, Hautes-Pyrénées, Haute-Garonne and Ariège. Activated this Saturday, the flood orange vigilance remains in place in the North.
On its site Vigilance Météo-France, the institute thus foresees for the territories of the Pyrenees a “rain-snow episode persisting this Sunday, of weak to moderate activity at first”.
The precipitation should strengthen in the evening and “during the night from Sunday to Monday”, specifies the meteorological agency. It could then fall up to 10 mm of rain per hour.
During the night from Saturday to Sunday, Météo-France has already recorded accumulations of between 5 and 10 mm of precipitation, rising to 15 mm locally.
Due to “significant warm weather from west to east on the Pyrenean range”, the snow should also change to rain during the evening of this Sunday, pushing the rain-snow limit above 2000 m. altitude.
Accumulations of 40 to 80 mm in the plains, 100 to 130 mm in the foothills and 150 to 200 in the mountains, or even 250 mm locally, are expected. This episode of intense rain should end “Tuesday during the day”, specifies Météo-France.