Final answer:
On the Fujita Tornado Scale, a tornado with wind speeds between 158 and 206 mph would be classified as an F3 or EF3, which is capable of causing severe damage.
Step-by-step explanation:
The scale you're referring to is the Fujita Tornado Scale, which classifies tornadoes based on the severity of the damage they cause and an estimate of wind speeds. For winds ranging from 158 to 206 mph, the tornado would be classified as an F3 on the original Fujita Scale, or as an EF3 on the Enhanced Fujita Scale, which is used in the United States. This level of tornado is known to cause severe damage, such as tearing off roofs, uprooting trees, and lifting cars off the ground.