| An F3 tornado is classified as causing severe damage on the Fujita scale. Wind speeds range between 158–206 mph (254–332 km/h). Description: Roofs and some walls torn off well-constructed houses Trains overturned Most trees in forests uprooted Heavy cars lifted off the ground and thrown Structural damage is widespread, but buildings may still be recognizable F3 tornadoes are extremely dangerous and capable of causing significant destruction in urban and rural areas alike| |An F5 tornado is the