That link is tenuous, you often get Es with no lightning showing on the maps, I suspect that the thunderstorm season and the Es season just happen to coincide because they both happen in summer - what is it they say? “Correlation does not imply causation.”
There have been at least two villages totally flooded in minutes when rivers broke their banks due to exceptionally heavy rain in the last week in Germany. Three drowned in the first incident (one being a fireman trying to rescue someone) - both he and the person he was trying to rescue were lost and in the second incident 6 dead - 3 of whom were women in ground floor apartments who were unable to leave when the floods came and drowned as the water rose quickly through the buildings.
Horrible situations and there are still people unaccounted for. I expect those two villages will never be the same again. Most of the businesses in the main streets are destroyed and in some cases the insurance wont pay out, meaning the owners of the business will go broke. The TV pictures show large trees and cars and vans being picked up and carried down the streets in the flood of mud and water.
As you say Christophe, not weather we would expect in Europe.
I’ve been following that on the web, Ed. Terrible. It reminds me of the Lynmouth disaster in 1952, and more recently, the Floods in Boscastle in 2004 and Glenridding last December. Someone up there is out to get us!