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https://en.wikipedia.org/wiki/2021_European_floods
2. Description of the event
The event started around 12 July with heavy rainfall in southern Germany and Switzerland. The rainfall moved later to the north on the north-western side of the upper-level trough.
The plots below show precipitation observations from DWD, shared via Twitter,
The evaluation evaluation below will be based on two regions and period: 3-day (12-14 July) in a box covering the extended Rhine valley (46.5N-52N, 5E-8.5E) and 1-day (14 July) centred on the Ardenne mountains (49.5N-51.5N, 6E-7.5E).
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