Supercells

Supercells can cause F-5 tornadoes. They are stronger than F-1 and F-2 tornados. A supercell forms when warm moist air rises an cold dry air mixes in. Supercells come from clouds called cumulonimbus.

Tornadoes

Tornadoes are dangeruos. Some are strong and some are weak.
The Fijita tornado scale rates tornadoes. Here is how it rates them:
F-1:40-72 mph: It can damage chimneys and brake branches off trees.
F-2:72-118 mph: It can brake roofs off houses.
F-3:118-206 mph: It can toss trains and overturn mobile homes.
F-4:206-302 mph: It can toss cars and trains into the air and drop them miles away.
F-5:302-373 mph: It can toss houses into the air.