Authorities have issued an orange weather alert for heavy rainfall across the country, in force from 10pm on Monday until 8am on Tuesday.

The warning, announced by the Weather and Flood Risk Assessment Unit (CERI), follows a morning meeting to evaluate the worsening meteorological situation. The alert applies nationwide, with particular concern for the south and east of the country.

Forecasts suggest continuous rainfall during the night, with totals ranging from 25 to 50 litres per square metre, and in some areas reaching as much as 70 to 80l/m². The heaviest downpours are expected overnight, increasing the risk of flooding along the Alzette River and smaller watercourses in the affected regions. Where, the Water Management Authority have issued an orange alert warning for flooding in the south of the country and yellow in the north from Monday 1pm to Tuesday 2pm.

Authorities are urging residents to remain cautious, especially in campsites near rivers, and to monitor updates regularly on meteolux. Hazard maps showing areas at risk from heavy rainfall are available at here.