Dutch authorities ordered 10,000 residents of Maastricht city and adjacent villages to evacuate homes along the river Maas Thursday evening as rainy weather still circulated over western Europe, code-named low pressure zone "Bernd."
King Willem-Alexander and Queen Maxima also visited the hard-hit town of Valkenburg, east of Maastricht, where floodwaters had inundated homes and businesses.
In adjacent Belgium, where the Vesdre River had spilled its banks at Pepinster in the Walloon region, three elderly people were missing after a small rescue boat used by firefighters capsized.
"Unfortunately, they were quicky engulfed," said Mayor Philippe Godin. "I fear they are dead."
Highways were still inundated in southern and eastern parts of Belgium. Trains were halted, with Luttich's rail station closed from midday Thursday.
All municipalities along Belgium's Meuse River were evacuated after flooding around Limbourg, according to local reporters.
Interior Minister Annelies Verlinden activated the EU's catastrophe mechanism. Assistance was offered by France, Italy and Austria.
Luxembourg set up a crisis panel to respond to emergencies triggered by heavy rains.
Prime Minister Xavier Bettel said "several homes" had been flooded and were "no longer inhabitable".
In northeastern France, rainwater ﬂooded vegetable fields, many homes, and a World War I museum at Romagne-sous-Montfaucon. Firefighters evacuated people from campgrounds.
Record rainfalls, river levels
The Aire River rose to its highest levels in 30 years in some areas, reported L'Est Republicain newspaper.
The French national weather service said two months of average rain had fallen in just two days.
Wetteronline, a Bonn-based weather forecaster, said 24-hour records broken included Kall-Sistig in Germany's western Eifel region, where 145 liters per square meter fell. Near Cologne, 154 liters was recorded within 24 hours.
Mojib Latif, a veteran German climatologist based at the Geomar Helmholtz-Center said industrialized society's ability to adapt to weather fluctuations was nearing breakdown.
Historically human beings were used to relatively stabile climatic conditions, but weather events were now happening at a speed "that has never occurred before" Latif told Friday's edition of the Neue Osnabrücker Zeitung newspaper.
World risks losing the game in a large-scale experiment