Three-Dimensional Storm Structure and Low-Level Boundaries at Different Stages of Cyclic Mesocyclone Evolution in a High-Precipitation Tornadic Supercell

Figure 4

Three-dimensional isosurfaces of vertical velocity (−5 m s⁻¹ [blue] and 20 m s⁻¹ [red], (a), (c), (e)) and vertical vorticity (−1 10⁻³ s⁻¹ [blue] and 1 10⁻³ s⁻¹ [gold], (b), (d), (f)) for 2358 UTC (a, b), 0011 UTC (c, d), and 0022 UTC (e, f). Radar reflectivity (in dBZ according to the color scale) at 1 km altitude is plotted at the bottom of each panel. Horizontal planes at 2, 6, and 10 km are shaded grey for reference. Note that panels (a), (c), and (e) are oriented with a perspective of looking at the storm from approximately the west while panels (b), (d), and (f) are oriented with a perspective of looking at the storm from approximately the north.

(a)

(b)

(c)

(d)

(e)

(f)