Fujita-Pearson Scale (FPP Scale) 2
Fujita-Pearson Scale (FPP Scale) 2 : A 3-digit scale for tornadoes devised by Fujita (F scale) and Pearson (PP scale) to indicate the tornado intensity (0-5), path length (0-5), and path width (0-7) (UNDHA, Disaster Management Glossary, 1992, p. 43; WMO 1992)