Advances in Science and Research
Advances in Science and Research
ASR
Articles | Volume 22
Articles | Volume 22
https://doi.org/10.5194/asr-22-165-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/asr-22-165-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22
13 May 2026
 | 13 May 2026

A damaging supercell hailstorm on 6 July 2023 in Vitoria-Gasteiz, the Basque Country

Joseba Egaña, Jon Ander Arrillaga, and Santiago Gaztelumendi

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Cited articles

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Bunkers, M. J., Klimowski, B. A., Zeitler, J. W., Thompson, R. L., and Weisman, M. L.: Predicting Supercell Motion Using a New Hodograph Technique, Weather Forecast., 15, 61–79, https://doi.org/10.1175/1520-0434(2000)015<0061:PSMUAN>2.0.CO;2, 2000. 
Calvo-Sancho, C., Díaz-Fernández, J., Martín, Y., Bolgiani, P., Sastre, M., González-Alemán, J. J., Santos-Muñoz, D., Farrán, J. I., and Martín, M. L.: Supercell convective environments in Spain based on ERA5: hail and non-hail differences, Weather Clim. Dynam., 3, 1021–1036, https://doi.org/10.5194/wcd-3-1021-2022, 2022. 
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On 6 July 2023, a severe hailstorm hit Vitoria-Gasteiz, caused by a supercell. Active cells moved southwest to northeast, with some shifting west-east. The storm, with radar reflectivities up to 65 dBz, brought intense showers and hail up to 5 cm in diameter. It caused injuries, vehicle damage and urban flooding. This study analyzes the storm’s conditions and surface effects using different data.
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