A recording showing the effects of a storm on a sewer network

A storm is a meteorological phenomenon that can involve serious risks, and not only for those exposed to lightning on the surface.

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Without a doubt, one of the most dangerous places to experience a storm is the sewer of a city, since it serves as a drain for the large amount of water that usually falls during these episodes. An example of this is the video published two weeks ago by Kanálismus, < strong>a Czech YouTube channel specialized in sewers.

The images were recorded on February 28, 2023 in Brno, the second largest city in the Czech Republic. What appears in the video, according to its author, is the Červený relief chamber, specifically the combined main sewer C of the Červený holding tank, in the Ponava district: "It was a large complex stormy storm that began to form during the day on the border between Germany and Switzerland, passed through Bavaria, entered the Czech Republic through Šumava and České Budějovice, and then continued in the same direction towards the northeast through Brno".

In the video we see the waterspout that formed ten minutes after the storm (the video is in Czech and with some English subtitles, but Youtube's automatic subtitles do not work):

It must be said that the situation we see in the video was very dangerous, so it is totally inadvisable to do something like that. To give you an idea, you can see some screenshots here.

Here we see the storm over the city of Brno. No images of the rain on the surface are seen in the video, but it must have been considerable. In the following images you can see how the water flow increased in the Červený relief chamber: