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Figure

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

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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.