Post Time: 2026-03-11
Country: United States, Australia, United Kingdom. City: Amarillo, Baton Rouge, Knoxville, Simi Valley, Virginia BeachIn-depth discussion of the Greensburg, KS, EF5 tornado of May 4, 2007. We'll discuss the meteorology behind the event before diving into the behavior and mechanics of the parent supercell and Greensburg tornado (and subsequent tornadoes), including the modes of cyclic tornadogenesis, notable radar signatures such as a weak-echo column, the tornadoes' click through the up coming website deviant motion, and more. Thumbnail image from R. Fritchie via Tanamachi et al. (2012). --------------------------------------------------------- Chapters: 0:00 Introduction 2:35 Meteorological discussion 23:10 May 24, 2015 analog 27:09 Event progression/radar overview 31:06 Why significant tornadoes occurred despite strong CIN 35:05 Initial "splitting" storms 38:36 Change in cyclic tornadogenesis modes 42:17 Hook echo characteristics, progression 46:58 Satellite tornadoes 48:28 Weak-echo column 52:36 Deviant tornado motion 01:00:30 Occlusion/hand-off process fueled by vorticity stretching 01:03:29 Brief discussion of the tornadoes after Greensburg 01:07:51 Summary --------------------------------------------------------- Resources: "The Greensburg, Kansas Tornadic Storm: A Storm of Extremes" - Lemon and Umscheid (2008): "The Formation and Early Evolution of the Greensburg, Kansas, Tornadic Supercell on 4 May they said 2007" - Bluestein (2009): "Mobile, X-band, Polarimetric Doppler Radar Observations of the 4 May 2007 Greensburg, Kansas, Tornadic Supercell" - Tanamachi et al. (2012): "Significant Nighttime Tornadoes in the Plains Associated with Relatively Stable Low-Level Conditions" - Fischer and Davies (2009): "The Influence of the Shear-Induced Pressure Gradient on Thunderstorm Motion" - Rotunno and Klemp (1982): "Anticipating Deviant Tornado Motion Using a Simple Hodograph Technique" - Nixon and Allen (2021): "Historic Greensburg Supercell of 4 May 2007" - Umscheid (2010): "Radar Observations of the check this link right here now 3 May 1999 Oklahoma City Tornado" - Burgess et al. (2002): US Tornadoes article on Greensburg: Cameron Nixon's article on deviant tornado motion:
