Brief communication: How extreme was the thunderstorm rain in Vienna on 17 August 2024? A temporal and spatial analysis

Klaus, Vinzent; Laimighofer, Johannes; Lehner, Fabian

doi:10.5194/nhess-25-4807-2025

Articles | Volume 25, issue 12

https://doi.org/10.5194/nhess-25-4807-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-25-4807-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 12

Brief communication

|

04 Dec 2025

Brief communication |

| 04 Dec 2025

Brief communication: How extreme was the thunderstorm rain in Vienna on 17 August 2024? A temporal and spatial analysis

Vinzent Klaus, Johannes Laimighofer, and Fabian Lehner

Supplement

https://doi.org/10.5194/nhess-25-4807-2025-supplement

Data sets

How extreme was the thunderstorm rain in Vienna on 17 August 2024? INCA Data and station data. F. Lehner, J. Laimighofer, and V. Klaus https://doi.org/10.5281/zenodo.14500708

Model code and software

precipAnalysis V. Klaus, F. Lehner, and J. Laimighofer https://github.com/katelbach/precipAnalysis

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Short summary

On 17 August 2024, a thunderstorm in Vienna led to a record-breaking rainfall of 107 mm in two hours. An analysis of the exceptionally long hourly rain gauge time series (since 1941) estimates this event's return period at 700 years. The extremity of the event is further confirmed by neighboring weather stations and rain-radar data. Linking the return period to atmospheric temperature shows that such events might occur more often with rising temperatures.