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Hour-Long Waterspout Over Lake Constance Prompts Safety Advisory

DWD experts attribute the display to sharp temperature contrasts combined with vertical wind shear over the lake.

Overview

  • The waterspout appeared shortly after 9 a.m. Tuesday south of Friedrichshafen and lingered for about one hour before dissipating.
  • The Deutscher Wetterdienst has officially classified the phenomenon as a Type-2 tornado family waterspout.
  • Swiss TV weather service released photographs and video footage capturing the full span of the event.
  • No damage or injuries have been reported and shipping operations on the 536 square-kilometer lake remained unaffected.
  • DWD tornado expert Jens Winninghoff says Lake Constance typically sees two to three such waterspouts annually, which can generate winds of around 100 km/h and pose risks to small craft and swimmers.