Allen Research Group

Hail - Tornadoes - Climate Variability - Extremes

Research Directions

Severe thunderstorms have influenced and shaped the development of communities worldwide, and how these events respond to climatic variations remains an open question. The primary goal of my research program is to understand how severe thunderstorms respond to climate variability and, in doing so, improve our quantification of potential risk to both life and property from a present and future climate perspective. The fundamental step to address this goal is using synoptic scale environmental conditions to model the occurrence of severe thunderstorm phenomena such as hail, tornadoes and extreme rainfall. However, to develop these relationships, comprehending the inherent climatology of reported severe thunderstorms is crucial to understanding the present risk and variability.

Interactions between climate and severe thunderstorms, along with consequent risk to life and property in both the present and future climate are an emerging and important field. Research in this area is also necessary to improve our ability to forecast severe thunderstorms beyond a week, enabling government agencies and affected industries to mitigate the risks of severe thunderstorms in a changing and increasingly variable climate. There is also substantial insurer interest in worldwide severe thunderstorm climatologies for assessing their portfolio risks, and our group welcomes interest in collaborative opportunities.

Current Projects

  • Improving High-Impact Hail Event Forecasts by Linking Hail Environments and Modeled Hailstorm Processes

  • Hail Project

  • Toward a Global Understanding of Severe Convective Environments

  • Deep learning for operational identification and prediction of synoptic-scale fronts.

  • Geospatial predictive analysis of damaging hail and wind occurrences in the lower 48 states and Canada.

  • Quantifying the Risk and Impact of Wind and Hail Storms in a Warming Climate.

  • Left-moving supercell storm processes, morphology and environments.

  • Identifying and characterizing drivers of tornadic and severe thunderstorm frequency on the seasonal-to-subseasonal scales.

  • Hailstones and Hailstone Properties

  • Variability in insured losses and impacts caused by thunderstorms.

  • Seasonal-to-subseasonal prediction of United States severe thunderstorms

  • The Australian Tornado Climatology Project.

  • Great Lakes Meteotsunamis and Wetland Impacts

  • Past Projects

  • Aridland Spring Responses to Mesoscale Precipitation

  • The El Reno Survey Project
  • El Reno Tool

  • Climate Climate Impacts on Severe Thunderstorms Over Australia

  • Severe Thunderstorm Climatology Over Australia

  • Societal Perceptions of Severe Thunderstorms

  • Climatology of Explosive Cyclogenesis