A storm that swept across parts of Germany generated three tornadoes, the country's weather service said Saturday. More than 40 people were injured in one western city.

The twister created a path of destruction from west to east of the city, Paderborn police said, adding it caused 30 to 40 injuries. At least 10 of those injuries were serious, authorities noted.

Authorities in Paderborn, located about three hours north of Frankfurt, asked residents to stay indoors as "countless danger spots" remained, and rescue efforts were ongoing.

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Storms on Thursday had already disrupted traffic, uprooted trees that toppled onto rail tracks and roads, and flooded hundreds of basements in western Germany.

Much of northern Germany was under a threat level 3 (out of 3) for severe storms Friday, according to the European Storm Forecast Experiment. The level indicates a possibility for severe to extremely severe wind gusts, large hail, tornadoes and heavy rain, the team said.

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"A dangerous situation is expected that may feature a convective windstorm with long swaths of severe to extremely severe wind gusts and several supercells with large hail and tornadoes with the highest threat over central parts of Germany," Estofex said.

There were several other tornado reports Friday, including one in the Netherlands, close to the German border and three in Germany, CNN meteorologist Taylor Ward said.

The German Weather Service confirmed three tornadoes in North Rhine-Westphalia — in Paderborn, in nearby Lippstadt, and on the edge of the town of Hoexter, news agency dpa reported.

The storm loosened roof tiles, brought down scaffolding, overturned cars and sent tree branches crashing into windows.

Further south, authorities in Bavaria said 14 people were injured Friday when the wooden hut they were trying to shelter in collapsed during a storm at Lake Brombach, south of Nuremberg.