Some big news came out in the meteorological community on Monday regarding a powerful tornado that occurred in eastern North Dakota on June 20, 2025. The National Weather Service in Grand Forks ...

When using the Enhanced Fujita Scale to determine the tornado's EF-rating, begin with the 28 Damage Indicators on the scale. Each one of these indicators have a description of the typical construction ...

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 ...

The ratings range from: EF0: Tornadoes with winds between 65 and 85 mph. For comparison, Category 1 hurricanes have sustained ...

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 ...