Meso-vortices

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Speaker Notes:

This schematic, from Atkins et al (2005) shows the life cycle of a quasi-linear convective system with its associated rear-inflow jet, meso-vortices and a tornado, based on observations of a bow echo that occurred in Illinois in 2003. Key points are that non-tornadic meso-vortices initially develop along the leading edge of the squall line. Primary damage paths eventually occur with these vortices, which can occur on the north side or on the nose of the rear inflow jet. A tornado can also occur with some of the stronger vortices.