ef scale

Understanding the EF-Scale: The Official Tornado Ranking System

The EF-Scale is the official tornado ranking scale of the U.S., Canada, and more countries. Learn more bout it here… The EF-Scale is for tornadoes to rate them on a scale from 0 to 5 (and more). The EF-Scale categorized tornadoes as the Saffir-Simpson scale categorizes hurricanes. It…