OKLAHOMA CITY- You probably heard the term QLCS tornado during the weekend severe storms that hit El Reno and parts of Oklahoma City.
These are tornadoes that form very quickly with little warning.
They 'spin up' with a line of storms often called a squall line.
These are not the typical set-up seen in Oklahoma. These are usually weak and happen at night.
The El Reno tornado is classified as a QLCS and was rated as an EF-3 which is also very rare.
KFOR Meteorologist Emily Sutton explains in the video above.