This Monday morning, even if a veiled sun will sometimes be visible in places, the clouds will often take over and some rain or showers, possibly already punctuated by thunder, will arrive from the French border, according to forecasts from the Royal Meteorological Institute. . During the day, precipitation will intensify and will sometimes be accompanied by thunderstorms, especially in the east of the country in the afternoon.
Under the most intense cells, it will be necessary to expect abundant precipitation in a short time (from 10 to 20 liters/m2 in 1 hour) as well as a risk of gales or even a little hail, which prompted the IRM to issue a yellow thunderstorm alert from 12:00 p.m. to 9:00 p.m. in the provinces of Limburg, Liège, Namur and Luxembourg. The maximum will be between 19 degrees on the coast and 23 degrees in the north of the country. The wind will initially be light to moderate from the southeast. In the afternoon, it will become moderate and will move to the northwest north of the Sambre-et-Meuse furrow or to the southwest south of the furrow. This evening, the IRM predicts the return of calmer weather even if some showers will still be possible. Lows will range from 7 to 11 degrees.
tomorrow mardi, the atmosphere will become unstable during the day, with a line of showers passing from west to east in the afternoon. Most showers will fall on this line; the latter may even be punctuated by a few claps of thunder. In the afternoon, the weather will become sunny in the west, especially on the coast. In the maritime polar air, it will not be more than 14 degrees on the heights of the Ardennes and 17 or 18 degrees elsewhere. The wind will be moderate to temporarily even quite strong, and at the seaside sometimes strong, from southwest to west.
Wednesday, the weather will remain dry during the day with sun and clouds. In the evening and overnight from Wednesday to Thursday, a weakened disturbance will cross the country from west to east and could lead to some precipitation in several places. The highs will be between 15 and 19 degrees, under a moderate wind and at fairly strong seas from the southwest sector.
Thusday, the weather will be quite sunny although more cumulus clouds will develop during the day. The weather will remain dry in most areas. Highs will be near 18 degrees in the center. The wind will be moderate, and at sea sometimes quite strong, from west to northwest.
Friday, the weather should remain dry everywhere with alternating sunny spells and cloudy periods. The maxima will be around 19 degrees in the center of the country, under a moderate north-westerly wind.
Next weekend promises to be quite cool with a moderate northerly wind, many cloudy fields, sometimes interspersed with slightly wider clearings. The weather will remain dry to within a shower. The maximum will be around 17 or 18 degrees.