Severe storms all have extremely strong winds that can cause a lot of environmental damage.
which storm below has the strongest winds?
cyclone
hurricane
thunderstorm
tornado

tornado

Explanation:

they can produce winds up to 400mph while hurricanes can only produce 200mph winds

tornado

Explanation:

Tornadoes are the most violent and rarest forms of thunderstorms. It is a continuously rotating column of air that remains in contact with the surface of the Earth and with the cumulonimbus cloud or rarely with the base of a cumulus cloud.  

Wind speed in the range of 500 km per hour can have an extreme event. When the winds of this magnitude strikes a populated area, they can cause a great loss of life, can result in collapse of the building structures and flying of the debris. Hence, cause a lot of environmental damage.