Post on 08-Jan-2016
description
Chapter 18 - Tornadoes
3 May 1999 radar animation
http://severewx.atmos.uiuc.edu/18/050399.reflectivity.html
Velocity animation
http://severewx.atmos.uiuc.edu/18/050399.velocity.html
Fujita Scale
http://ivis.eps.pitt.edu/courses/hazards/lectures/19.pdf
Low Level Jet
Mesocyclone #1
Mesocyclone #2
Mesocyclone #3
Weak Convergence along Forward-Flank Reflectivity
Gradient
Courtesy: Jeff Beck (TTU)
Cyclic supercell pics
RFGF RFGF
meso meso
New
New
New
Occluded
Occluded
Cherokee, OK4/14/12
Occluded
Dumas, TX – VORTEX2 2010
Tornadogenesis During VORTEX2 (Limon, CO 6/11/2010)
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
In-situ pressure measurements of a tornado