We thank the University of Manchester Library for providing, through their interlibrary loans, some of the more obscure references used in this article. We thank Gallica, the digital library of the National Library of France for providing some of the early references on tornadoes in Europe. We also thank Alois Holzer (European Severe Storm Laboratory) for providing references on tornadoes in Austria; Michalis Sioutas (Meteorological Applications Centre, Greece) for providing references on tornadoes in Cyprus; Dan Suri (Met Office, United Kingdom) and Lars Lowinski (Ubimet, Austria) for providing references on tornadoes in Hungary; Marina Scionti (Italian Geographical Society) for providing references on tornadoes in Italy; Pieter Groenemeijer (European Severe Storm Laboratory) for providing references on tornadoes in the Netherlands; Mateusz Taszarek (Adam Mickiewicz University, Poland) for providing occurrence data for tornadoes in Poland; Mateja Iršič Žibert (Slovenian Environment Agency) for providing reference on tornadoes in Slovenia; Morgane Jeanneret and Valentine Fasel (University of Fribourg, Switzerland) for providing references on tornadoes in Switzerland; Paula Leitão for providing references on tornadoes in Portugal; and Kelsey Mulder (University of Manchester) and the Tornado and Storm Research Organisation (United Kingdom) for providing tornado occurrence data for the United Kingdom. We thank Hugo Ricketts and Declan Valters (University of Manchester) for their help in translating some of the German and Russian references into English. Funding for Antonescu was provided by the AXA Research Fund to the University of Manchester for Assessing the Threat of Severe Convective Storms across Europe project. Partial funding for Schultz was provided by the Natural Environment Research Council to the University of Manchester through Grants NE/H008225/1, NE/I005234/1, and NE/N003918/1. Antonescu and Schultz were both partially funded by the Risk Prediction Initiative of the Bermuda Institute of Ocean Sciences through Grant RPI2.0-2016-SCHULTZ.
Agee, E. M., 2014: A revised tornado definition and changes in tornado taxonomy. Wea. Forecasting, 29, 1256–1258, doi:10.1175/WAF-D-14-00058.1.
American Meteorological Society, 2015a: Tornado. Glossary of Meteorology. [Available online at http://glossary.ametsoc.org/wiki/tornado.]
American Meteorological Society, 2015b: Waterspout. Glossary of Meteorology. [Available online at http://glossary.ametsoc.org/wiki/waterspout.]
Anderson, G., and D. Klugmann, 2014: