The two alerts launched by the IRM are as follows:
From 11/24 8 p.m. to 11/25 9 a.m .: Tonight and Thursday morning, there will still be a risk of patches of frost mainly in the regions located to the south of the Sambre-et-Meuse groove.[display-posts orderby="rand"]
From 11/25 1 a.m. to 11/25 9 a.m .: Tonight and Thursday morning, there will be a fairly general risk of fog. Mainly south of the Sambre-et-Meuse furrow, it could be freezing fog.
➜ The weather forecast in your town.
Tonight there will be temporary large sunny spells over the southeast. Elsewhere, cloudiness will be abundant. Subsequently, the sky will become very cloudy to overcast with low clouds, haze or fog over all areas. It could sometimes be freezing fog over the center as well as to the south of the Sambre-et-Meuse furrow. However, one or the other timid clarification will remain possible. In the extreme west, a few small showers will be possible before the arrival of a weak area of rain at the end of the night. The minima will be between -4 degrees on the Ardennes summits, 0 degrees in the center and 5 degrees at sea. The wind will often be weak and variable in the land. At sea, it will be a moderate wind moving to the southwest.
Tomorrow, when a weak cold front passes, drier, but cooler air, accompanied by clearings, will invade our country. Friday, a new disturbance, more active, will reach our regions. It will be linked to a deep depression circulating over the North Sea and heading towards our country during the next weekend. It will be accompanied by a maritime air mass of polar and unstable origin, favoring very unstable weather, and winter in the Ardennes.