1. Chapter 18 - Tornadoes

5. 3 May 1999 radar animation

6. Velocity animation

7. Fujita Scale

8. Low Level Jet

10. Weak Convergence along Forward-Flank Reflectivity Gradient
Courtesy: Jeff Beck (TTU)
Mesocyclone #2
Mesocyclone #3
Weak Convergence along Forward-Flank Reflectivity Gradient
Mesocyclone #1

11. Cyclic supercell pics
RFGF
RFGF
meso
meso

12. New
Occluded
Occluded
New
New
Cherokee, OK
4/14/12
Occluded

13. Dumas, TX – VORTEX2 2010

15. Tornadogenesis During VORTEX2 (Limon, CO 6/11/2010)

16. Tornado Structure * Very strong near-surface radial inflow
* Sharp transition to upward motion in
center of vortex (corner region)
* May develop two-celled structure
(descent in center of vortex) – immediately
precedes multiple vortex structure

18. In-situ pressure measurements of a tornado