The National Weather Service has confirmed that the tornado that tore through Moore, Oklahoma, on Monday was an EF5 on the Enhanced Fujita scale. The tornado was estimated to be 17 miles long (27 km) and up to 1.3 miles (2 km) wide.
The devastating tornado lay waste to Moore, just south of Oklahoma City. It killed 24 people, including 9 children after it passed over an elementary school.
Read: 9 Powerful images from the deadly tornado to hit Moore, Oklahoma
The Enhanced Fujita scale measures the intensity of tornadoes and ranges from EF0 to EF5. Moore was hit by an EF4 in 1999. That tornado killed 36 people and injured 583, causing $1.5 billion in damage.
Enhanced Fujita Scale
EF0 – Wind speeds of 65-85 mph (105-137 km/h)
EF1 – Wind speeds of 86-110 mph (138-177 km/h)
EF2 – Wind speeds of 111-135 mph (178-217 km/)
EF3 – Wind speeds of 136-165 mph (218-266 km/h)
EF4 – Wind speeds of 166-200 mph (267-322 km/h)
EF5 – Wind speeds of Over 200 mph (over 323 km/h)
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