A land spout is a type of tornado not associated with a mesocyclone. A land spout is technically classified as a type of tornado although they differ from the average twister that destroys homes ...

FARGO — A tornado touched down during the late ... Land spout tornadoes are usually small, brief and relatively non-violent because they are not associated with the powerful updraft of the mesocyclone ...

A mesocyclone doesn't always produce a tornado ... The team then had to balance those tornado samples with difficult non-tornado samples. If the dataset were too easy, say by comparing tornadoes ...

FARGO — A tornado touched down ... brief and relatively non-violent because they are not associated with the powerful updraft of the mesocyclone of a well-developed, severe thunderstorm.