Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 7, issue 3
Articles | Volume 7, issue 3
https://doi.org/10.5194/wcd-7-1571-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-7-1571-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 3
Research article
 | 
28 Aug 2026
Research article |  | 28 Aug 2026

Derecho-favoring atmospheric environments in Finland: characteristics, identification criteria, and frequency trends

Oskari Rantala, Jouni A. Räisänen, Jenni Rauhala, and Marja Bister

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Cited articles

Ashley, W. S. and Mote, T. L.: Derecho Hazards in the United States, B. Am. Meteorol. Soc., 86, 1577–1592, https://doi.org/10.1175/BAMS-86-11-1577, 2005. a
Ashley, W. S., Mote, T. L., and Bentley, M. L.: On the episodic nature of derecho-producing convective systems in the United States, Int. J. Climatol., 25, 1915–1932, https://doi.org/10.1002/joc.1229, 2005. a
Ashley, W. S., Mote, T. L., and Bentley, M. L.: The extensive episode of derecho-producing convective systems in the United States during May and June 1998: A multi-scale analysis and review, Meteorol. Appl., 14, 227–244, 2007. a, b
Atkins, N. T. and Wakimoto, R. M.: Wet Microburst Activity over the Southeastern United States: Implications for Forecasting, Weather Forecast., 6, 470–482, https://doi.org/10.1175/1520-0434(1991)006<0470:WMAOTS>2.0.CO;2, 1991. a
Barnston, A. G. and Livezey, R. E.: Classification, seasonality and persistence of low-frequency atmospheric circulation patterns, Mon. Weather Rev., 115, 1083–1126, 1987. a
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Derechos are widespread long-lasting windstorms associated with thunderstorms. They can cause damage comparable to tornadoes. Using data from derechos in Finland and results from earlier studies, we develop three criteria sets to identify atmospheric conditions favoring derecho formation in Finland. Application of these criteria sets to historical data shows that conditions favoring derechos have become more common in Finland during the recent decades.
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