Abstract

Effect of Topography on Weak and Moderate Tornadoes
Track: Climate, Weather, and Atmosphere
Author(s): Mary Passe-Smith

It is proposed that weaker and moderate (EF0-EF2) tornadoes are far more affected by local topography (roughness, slope, etc.) and perhaps changes in land cover/soil type as these attributes relate to moisture availability than are strong and violent (EF3-EF5) tornadoes, especially when synoptic conditions are not highly favorable. The pre-tornado surface characteristics for weak and moderate tornadoes with path lengths of over 5 miles will be assessed for dominant topographic traits over a confined area. The resulting model will be applied to a larger area to test its veracity. This information can alert forecasters to areas deemed highly favorable which may require special attention when approached by supercell or certain squall-line thunderstorms.

Mary Passe-Smith
University of Central Arkansas
Department of Geography
201 Donaghey Ave
Conway , Arkansas 72035
United States
Phone: 501-450-3280
E-mail: marysuep@uca.edu