Observed annual median and trend of the Mean Potential Hail Index (PHI) over the period 1951-2010

Figure Created 23 Jun 2016 Published 04 Jan 2017 Last modified 26 Jul 2017
Based on the logistic hail model (Mohr, Kunz, and Geyer, 2015) and reanalysis data from NCEP-NCAR (Kalnay, et al., 1996). Trends with significance below the 5% level are cross-hatched. Note that significant trends are only found for values below -5 PHI over the period.

European data

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