Between 1950 and 2022, the heatwave event that struck Alberta in Canada in June 2021 was the most extreme in terms of standard deviation from average temperature conditions. On 30 June 2021, the heatwave event recorded had a standard deviation of 3.4 degrees Celsius.
Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region
(in degrees Celsius)
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Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region
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values have been normalized to account for climate change trends so as to include major heatwaves from 1950 to present.
Supplementary notes
Standard deviation is this case is a measure of how much the temperature conditions of a heatwave stray from the average temperature conditions for that particular region.
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World Economic Forum. (May 10, 2022). Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region (in degrees Celsius) [Graph]. In Statista. Retrieved April 05, 2025, from https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/
World Economic Forum. "Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region (in degrees Celsius)." Chart. May 10, 2022. Statista. Accessed April 05, 2025. https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/
World Economic Forum. (2022). Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region (in degrees Celsius). Statista. Statista Inc.. Accessed: April 05, 2025. https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/
World Economic Forum. "Standard Deviation of The Most Extreme Heatwave Events Worldwide between 1950 and 2022, by Region (in Degrees Celsius)." Statista, Statista Inc., 10 May 2022, https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/
World Economic Forum, Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region (in degrees Celsius) Statista, https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/ (last visited April 05, 2025)
Standard deviation of the most extreme heatwave events worldwide between 1950 and 2022, by region (in degrees Celsius) [Graph], World Economic Forum, May 10, 2022. [Online]. Available: https://www.statista.com/statistics/1330607/global-extreme-heatwave-events-standard-deviation-by-region/
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