What is a multi-vortex tornado?

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.

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

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