Winter arrives this year a month early. This Wednesday will indeed mark a fairly spectacular change in the weather in the Doubs with the arrival at dawn of a wave of cold air coming directly from the Arctic which should last until Saturday. In the morning, the plain should see the first flakes of snow and sleet appear. “This precipitation will not stick to the ground but from an altitude of 600 or 700 meters, a layer of 4 to 5 centimeters could form,” specifies Stéphane Nedeljkovic, forecaster at MétéoNews. The rest of the day promises to be less humid but maximum temperatures will not exceed 5° in Besançon and barely more than 1° in Pontarlier. A real freshness which will favor the return of snow in the evening and night from Wednesday to Thursday with a small film forecast in the plain and again 4 to 5 centimeters from 400 meters of altitude and at least ten centimeters at above 800 meters. “But the bulk of this winter episode will be for Thursday even if things still need to be refined,” warns Stéphane Nedeljkovic. We will have an air mass with mild air at the back and cold air at the front: depending on where we are, it could cause rain or snow. »
Lots of snow in Montbéliard and Belfort?
Until then, forecasts indicated around fifteen centimeters for the whole of Franche-Comté but the latest models are less categorical. “In fact, the disturbance is moving further and further north and therefore it is undoubtedly in the north of the Doubs department and in the Territoire de Belfort that the snowfall should be the heaviest on Thursday. Maybe up to 20 centimeters in 24 hours. Besançon is on the edge of this zone but it could snow significantly while in Pontarlier, further south, we could see a mixture of snow and rain.
Watch out for icy conditions on Friday
The night from Thursday to Friday will be freezing with up to -3° in the plains and -5° in Haut-Doubs. This bodes well for particularly difficult traffic conditions on Friday morning with the appearance of ice. “Showers of snow will continue to occur up to the plains and temperatures will not exceed 0° throughout the day. The roads will remain dangerous until Saturday noon because it will be cold again (0° in the plains and -5° in Haut-Doubs) during the night from Friday to Saturday,” underlines Stéphane Nedeljkovic who foresees a turnaround in the situation. spectacular for the future. “We will return to a southerly flow on Sunday with an impressive mild temperature: it will be 14° on Sunday morning and up to 16° in the afternoon. It is this thermal amplitude which is remarkable in the weather phenomenon which will affect us this week. » Things should return to normal next week with anticyclonic weather and seasonal temperatures around 10°.
