Now showing items 1-12 of 12

    • Climatological Radar Delineation of Urban Convection for Atlanta, Georgia 

      Bentley, M.L.; Ashley, Walker S.; Stallins, J.A. (Royal Meteorological Society, 2010)
      The distribution of warm season (June through August) thunderstorm activity surrounding Atlanta, Georgia from 1997 to 2006 was determined utilizing composite reflectivity data obtained from the network of National Weather ...
    • A Climatology of Fatal Convective Wind Events by Storm Type 

      Ashley, Walker S.; Schoen, Joseph M. (American Meteorological Society, 2010-10)
      There are still hundreds of casualties produced by thunderstorm hazards each year in the United States despite the many recent advances in prediction and mitigation of the effects of convective storms. Of the four most ...
    • Distribution of Mesoscale Convective Complex Rainfall in the United States 

      Ashley, Walker S.; Mote, T.L.; Dixon, P.G.; Trotter, S.L.; Durkee, J.D.; Powell, E.J.; Grundstein, A.J. (American Meteorological Society, 2003-12)
      Several annual mesoscale convective complex (MCC) summaries have been compiled since Maddox strictly defined their criteria in 1980. These previous studies have largely been independent of each other and therefore have ...
    • Effects of Urban Sprawl on the Vulnerability to a Significant Tornado Impact in Northeastern Illinois 

      Ashley, Walker S.; Hall, Soren G. (American Society of Civil Engineers, 2008-11)
      A sprawling U.S. population continues to spread into the fringes of urban development placing both populations and property in areas that were once largely unoccupied. Population tallies, housing unit totals, and housing ...
    • An extensive episode of derecho-producing convective systems in the United States during May and June 1998: A multi-scale analysis and review 

      Ashley, Walker S.; Mote, Thomas L.; Bentley, Mace L. (Royal Meteorological Society, 2007)
      A database was compiled for the period 1980–2005 to assess the threat to life in the conterminous United States from nonconvective high-wind events. This study reveals the number of fatalities from these wind storms, ...
    • Fatalities Associated with Nonconvective High-wind Events in the United States 

      Ashley, Walker S.; Black, A. (American Meteorological Society, 2008)
      A database was compiled for the period 1980–2005 to assess the threat to life in the conterminous United States from nonconvective high-wind events. This study reveals the number of fatalities from these wind storms, ...
    • Flood Fatalities in the United States 

      Ashley, Walker S.; Ashley, Sharon T. (American Meteorological Society, 2008-03)
      This study compiles a nationwide database of flood fatalities for the contiguous United States from 1959 to 2005. Assembled data include the location of fatalities, age and gender of victims, activity and/or setting of ...
    • On the episodic nature of derecho-producing convective systems in the United States 

      Ashley, Walker S.; Mote, T.L.; Bentley, M.L. (Royal Meteorological Society, 2005)
      Convectively generated windstorms occur over broad temporal and spatial scales; however, one of the larger-scale and most intense of these windstorms has been given the name ‘derecho’. This study illustrates the tendency ...
    • The relationship between tornadic and nontornadic convective wind fatalities and warnings 

      Ashley, Walker S.; Black, A.W. (American Meteorological Society, 2011)
      A database of tornado fatalities, nontornadic convective wind fatalities, severe thunderstorm warnings, and tornado warnings was compiled for the period 1986–2007 to assess the spatial and temporal distribution of warned ...
    • Spatial and Temporal Analysis of Tornado Fatalities in the United States: 1880-2005 

      Ashley, Walker S. (American Meteorological Society, 2007-12)
      A dataset of killer tornadoes is compiled and analyzed spatially in order to assess region-specific vulnerabilities in the United States from 1880 to 2005. Results reveal that most tornado fatalities occur in the lower–Arkansas, ...
    • The Storm Morphology of Deadly Flooding Events in the United States 

      Ashley, Sharon T.; Ashley, Walker S. (Royal Meteorological Society, 2008)
      This study investigates the synoptic and mesoscale environments associated with deadly flooding events in the United States from 1996 to 2005. A manual environment classification scheme, which includes analyses of ...
    • Vulnerability Due to Nocturnal Tornadoes 

      Ashley, Walker S.; Krmenec, Andrew; Schwantes, Rick (American Meteorological Society, 2008-10)
      This study investigates the human vulnerability caused by tornadoes that occurred between sunset and sunrise from 1880 to 2007. Nocturnal tornadoes are theorized to enhance vulnerability because they are difficult to spot ...