Severity Index 2 : A number indicating the relative net cumulated effects of the daily wildland fire danger on the fire load of an area during a selected period, such as a fire season
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}