2023-11-09 19:20:05
The yellow rain alert announced this Thursday afternoon in the province of Luxembourg has finally been lifted, the Royal Meteorological Institute (IRM) indicated this Thursday at 6:45 p.m. This decision is explained by the fact that the precipitation, forecast to be intense on Friday and Saturday, will be “more isolated” or because “the probability of reaching the threshold values will be lower”.
The hydrometry department of the Public Service of Wallonia (SPW) nevertheless indicated this Thursday that the Haute Semois, the Moyenne Semois and the Vierre, all located in the province of Luxembourg, are on pre-flood alert due to this new line showers forecast. The SPW recommends “stay cautious near areas of concentration of rain, small rivers, and at the head of the basin”.
West Flanders on yellow alert
The IRM also announced that West Flanders will finally be on yellow alert from this Thursday afternoon until Friday 5:00 p.m. due to the expected precipitation in the region. Total rainfall could reach 10 to 25 or even 30 l/m² in 24 hours over around a quarter of the province. “This is therefore a borderline case for yellow vigilance, but the problems already present in the Westhoek come into consideration”specifies the MRI.
The governor of West Flanders decided this Thursday to activate the provincial crisis management plan due to a risk of flooding in his territory. This is the second time this week that the Westhoek firefighters have been on war footing to prevent flooding in the region. Flooding already occurred at the start of the week in Watou, mainly due to heavy rainfall in the north of France.
Day by day forecasts
During the next night, cloudiness will remain variable, or sometimes abundant in the Ardennes. The showers will mainly affect the coastal region and the south of the Sambre et Meuse furrow. Temperatures will drop to between 3 degrees in the upper Ardennes and 8 degrees along the coast. The wind will generally be moderate from the southwest.
Friday morning, showers will mainly affect the coast and the Ardennes. In the afternoon, a more structured area of rain and showers will cross our country from France and the coast. The maximums will vary between 5 degrees in the Hautes Fagnes and 10 degrees in the west of the country. The southwest wind will be moderate to sometimes quite strong with gusts of 50 to 60 km/h.
SATURDAY morning, the sky will be very cloudy over the eastern half of the country with some light rain. Elsewhere, the weather will be generally dry with sunny spells. In the afternoon, the weather will become dry across the country with more sunny spells. The maximums will vary between 4 degrees in the upper Ardennes and 10 degrees in the west of the country. The wind will be moderate from west to southwest.
Sunday, the morning will be quite cold with low clouds and fog in many places. After their sometimes slow dissipation, some clearings will temporarily appear. The cloudiness will then increase rapidly from France. Rain, sometimes quite heavy, will follow in the evening and the following night. The maxima will vary between 5 degrees in the Hautes Fagnes and 9 degrees in Lower Belgium. The wind will be light from the south, then becoming moderate.
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