How does technology grasp nature’s most violent, chaotic storm? For half a century, U.S. meteorologists have been building a countrywide system of Doppler Radar, widespread automated data-gathering stations, geostationary satellites, and sophisticated computers to track and study tornadoes. Even with this massive scientific effort, forecasters can only begin to understand why tornadoes form and how to predict them. We’ll look at cutting-edge systems that attempt to measure the unmeasurable.