89th American Meteorological Society Annual Meeting

Sunday, 11 January 2009
Relationships between Vegetation Boundaries and Severe Local Storms in the Delta Region of Mississippi
Phoenix Convention Center
David Paul Keeney, Mississipi State University, Mississippi State, MS; and D. M. Brown
The influence of the Earth's surface on severe local storm processes is not well understood but is certainly becoming better recognized.

This research analyzes at how land use/type and topography affect the distribution and strength of tornadoes related to supercells transitioning through and out of the Delta region in western Mississippi.

Previous research has identified a long-term unique thermal

difference between the Delta and regions surrounding the Delta as well as preferential areas of convective development along this interface.

This study will illustrate through radar analysis and storm observation that different moisture and heat flux values produced by different soil types and vegetation favorably augments the mesoscale environment for severe local storms.

Both Spring and Winter storms favor initiation and strengthening along these permanent/semi-permanent boundaries.

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