Multi-vortex tornado seen in the Lower 9th Ward, New Orleans East, on March 22, 2022.
(FOX Weather/WVUE / FOX Weather)
A multiple-vortex tornado is when two or more tornadoes happen simultaneously in the same storm.
Often with a multi-vortex tornado, one or multiple intense sub-vortices will rotate around the center of the larger tornadic circulation.
Incredible video shows a large tornado moving through Chalmette, Louisiana on March 22.
VIDEO CAPTURES APPARENT MULTI-VORTEX TORNADO NEAR BRIDGE CITY, TEXAS
Multiple-vortex tornadoes can be especially damaging.
Sub-vortices can cause narrow, short, extreme swaths of damage that sometimes arc through tornado tracks, the National Weather Service says.
WHAT IS A WEDGE TORNADO
A multi-vortex wedge tornado was spotted west of Bridge City, Texas, on Oct. 27. Storm tracker @ChrisFLTornado on Twitter shared this video with FOX Weather.