Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Brown, Michael E.
Committee Member
Mercer, Andrew E.
Committee Member
Dixon, P. Grady
Date of Degree
5-11-2013
Document Type
Graduate Thesis - Open Access
Major
Geosciences
Degree Name
Master of Science
College
College of Arts and Sciences
Department
Department of Geosciences
Abstract
During the April 25 – 28, 2011 severe weather outbreak, 350 tornadoes were confirmed across 21 states, making the event the largest 3-day outbreak in U.S. History. Of the 350 tornadoes, 13 were of EF4 or EF5 strength. Due to complex terrain and vegetation in northeastern Alabama, northwestern Georgia, and eastern Tennessee, only four tornadoes were analyzed in this study. 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. This study analyzed heightened convective activity (analyzed by looking at cloud-to-ground lightning data) along each tornado track on days of weak synoptic forcing. Post- tornado months showed no signs of enhanced convective activity along any of the tornado tracks analyzed in this study, which could be attributed to several factors including study period, duration of intensity, tornado track length and width, and land cover.
URI
https://hdl.handle.net/11668/17757
Recommended Citation
Gutter, Barrett Frank, "Investigation of Vegetation Discontinuities and the Enhancement of Convection Related to the April 27 2011 Multiple Ef4 and Ef5 Tornado Scars" (2013). Theses and Dissertations. 2863.
https://scholarsjunction.msstate.edu/td/2863
Comments
tornado||vegetation||convection