The authors thank Russ Schneider and Steve Weiss of the SPC for their insight and encouragement in the design and development of the convective mode database. The thought-provoking and thorough reviews by Matt Bunkers, Les Lemon, and one anonymous reviewer helpful clarify and strengthen our presentation.
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The date a parameter was first calculated as part of the SPC mesoanalysis system and occasional daily disruptions both affected the length of the archive for each parameter, such that a particular parameter may not have been available for the entire 2003–10 period of study (cf. sample sizes in Figs. 1 and 2).
Since 2010, the RUC has assimilated radar reflectivity and lightning through the diabatic digital filter initialization (see Benjamin et al. 2004), which indirectly includes convective storms in the initialization process.
We refer to EF-scale damage ratings for all tornadoes, though the enhanced Fujita scale was not implemented until February 2007. The F-scale tornado damage ratings in prior years correspond to the same numerical rating in the EF scale for the same type of damage, though the EF scale includes more specific damage indicators.