alexa Investigation of Vegetation Discontinuities Related to the Yazoo City Tornado Scar and Enhanced Convection
ISSN: 2381-8719

Journal of Geology & Geophysics
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Research Article

Investigation of Vegetation Discontinuities Related to the Yazoo City Tornado Scar and Enhanced Convection

Gutter BF1 , Brown ME1* and Cox DA2
1Mississippi State University, Mississippi State, MS, USA
2Meteorologist National Weather Service, Jackson, MS, USA
*Corresponding Author : Brown ME
Mississippi State University
Mississippi State, MS, USA
Tel: +(662)325-3915
E-mail: [email protected]
Received October 08, 2014; Accepted November 12, 2014; Published November 21, 2014
Citation: Gutter BF, Brown ME, Cox DA (2015) Investigation of Vegetation Discontinuities Related to the Yazoo City Tornado Scar and Enhanced Convection. J Geol Geosci 4:185. doi:10.4172/2329-6755.1000185
Copyright: © 2015 Brown ME, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

The Yazoo City tornado occurred on April 24, 2010, traveling 240 km from Tallulah, Louisiana through Yazoo City, Mississippi and ending near Starkville, Mississippi. The tornado reached a maximum wind speed of 76 m s-1 and obtained a maximum width of 2.8 km. Landsat imagery showed a distinct vegetation scar along the majority of the path of the tornado. Abrupt changes in vegetation and the related sensible and latent heat fluxes have been shown to enhance convective activity along and near the resulting land surface discontinuities. The enhancement of convection is likely related to mesoscale circulations generated along thermal and moisture discontinuities and is best identified during synoptically benign periods. This study analyzed heightened convective activity (analyzed by looking at cloudto- ground lightning data) along the Yazoo City tornado track on days of weak synoptic forcing. 2010 had the greatest percentage of convectively active synoptically benign days with 66 percent. Years prior to the Yazoo City tornado had a lower percentage of convectively active synoptically benign days with 50 percent.

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