Mean number of thunderstorm days in the United States.

U.S. National Oceanic and Atmospheric Administration.2010-02-152010-02-151952http://hdl.handle.net/1969.3/20036n.p.Tabulations and maps show mean monthly and seasonal number of days with thunderstorms for 266 stations in the United States.climatological chartsthunderstormsperiodicitymonthly distributionmapsMean number of thunderstorm days in the United States.Book