Peeled shingles off roofs; broken tree branches; damage to signs. EF1 86–110 mph

The EF-scale does not measure wind speed. It measures damage , which is a function of wind speed and exposure time, debris impact, and structural integrity. A tornado with 150 mph winds passing over an open field receives a lower rating than a 130 mph tornado hitting a well-constructed school.

Tornado Ratings

Peeled shingles off roofs; broken tree branches; damage to signs. EF1 86–110 mph

The EF-scale does not measure wind speed. It measures damage , which is a function of wind speed and exposure time, debris impact, and structural integrity. A tornado with 150 mph winds passing over an open field receives a lower rating than a 130 mph tornado hitting a well-constructed school.