Lightning Risk (LR) 1 : Number relating to the expected number of cloud to ground lightning strikes capable of igniting fires that a rating area will be exposed to during the rating period
US Forest Service, Glossary of Fire Behavior & Fire Weather Terms, Washington, D.C., USA 2010. http://www.erh.noaa.gov/phi/fire_glossary.htm, (For Fr - Amer) {505}
