Some conceptual thoughts of the late Prof. Ferdinand C. Bates on severe storms are presented. These include discussions concerning the effects of “updraft” slope and rotation on the life history of these storms and on the severity of the accompanying weather. A brief discussion of the physical processes treated in his numerical modelling experiments is included.

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The AMS Severe Local Storms committee supports the publication of this document in memory of a man who made notable contributions to the understanding of severe local storms and who effectively and diligently helped bridge the information gap between the scientist and the lay public.

1 This work was made possible by the support of the National Science Foundation (NSF GA-1421).

2 See obituary notice, Bull. Amer. Meteor. Soc., 50, p. 562.

3 Principal contributors were D. C. Barnum, D. E. Martin., A. T. Safford and J. L. Vogel.