Measuring tornado winds at the ground level is notoriously difficult. Instead, meteorologists look at the damage, using on or more of 28 key indicators to determine how strong the tornado likely was ...

You’ve seen photos and video footage of ominous-looking tornadoes ripping through cities, launching cars through the air and leveling houses. But how much do you know about how a twister’s strength is ...

Measuring the strength of a tornado can be difficult based on sight alone, and weather instruments could easily be damaged by the strong winds. The Enhanced Fujita scale (EF-Scale) looks at the damage ...