Supercells are the most powerful of all storms and have updrafts that rotate
Supercells produce the most intense tornadoes, largest hailstones, extremely heavy rainfall and strongest straight line winds
Strong enough rotation throughout a supercell upraft can lead to tornadoes.
One or more storm cells will develop into a LINE complex
Strong straight line winds, heavy rain, hail and weak tornadoes can occur
Features include spectacular shelf clouds
Two or more storm cells will develop into a complex
These last much longer as a complex of cells than a single cell storm.
These can produce large hail, severe winds, heavy rain and even tornadoes.