Category
page 1Hazard scales
Beaufort Scale
empirical measure describing wind speed based on observed conditions
Saffir–Simpson hurricane wind scale
System of classifying tropical cyclones into five categories based on measured wind speed and used to estimate potential damage
International Nuclear Event Scale
scale to enable communication of safety information in nuclear accidents
Fujita scale
scale for rating tornado intensity
Volcanic Explosivity Index
relative measure of explosive volcanic eruption size (based on product volume, eruption cloud height, etc.), open-ended with the biggest prehistoric eruptions given magnitude 8
ultraviolet index
measurement of strength of sunburn-producing ultraviolet (UV) radiation
Torino Scale
measure of hazard posed by near-Earth objects
Enhanced Fujita Scale
Scale for assessing the intensity of tornadoes used in North America
Palermo Technical Impact Hazard Scale
measure of hazard posed by near-Earth objects
tropical cyclone scale
scales of the intensity of tropical cyclones
TORRO scale
Scale for rating tornado intensity
International Scale of River Difficulty
Grading system for river rapids
Douglas Sea Scale
scale to estimate the roughness of the sea for navigation
Keetch–Byram Drought Index
Estimate of the soil moisture deficit
Haines Index
estimation of the risk of wildfire
Forest fire weather index
estimation of the risk of wildfire
International Fujita scale
Tornado rating system
Waffle House Index
informal metric used in the United States to determine the effect of a storm