At the WHAM laboratory, we have been simulating the tornadic wind fields numerically (using CFD simulations) and experimentally (in laboratory tornado simulators) to study the static and dynamic responses on civil structures induced by tornadoes. We believe that the entire community has a role to play in improving their communityâ€™s resilience to tornadoes. To achieve true tornado resilience, besides technical advancements, the whole community should be aware of the threats and, following best practices, act appropriately together.
Analysis of the Dynamics and Microphysics of a Wet Downburst Case Using Dual-Polarization Radar Data 11 AM/NWC 4140 A significant, wet downburst affected Norman, Oklahoma, on 14 June 2011. Surface winds in excess of 35 m s-1 (>80 mph) and hailstones in excess of 4 cm diameter occurred during the downburst. The polarimetric S-band (~11.09 cm) […]
In 2003, the Storm Prediction Center (SPC) began post-processing the National Centers for Environmental Prediction (NCEP) Short-Range Ensemble Forecast (SREF) system to provide operational guidance on the prediction of lightning hazards across the contiguous United States.
A number of novel techniques to examine polarimetric radar data collected via PPI scans in a time-height format have been developed in recent years. Using primarily polarimetric radar data collected by WSR-88D radars, techniques such as quasi-vertical profiles (QVPs), range-defined quasi-vertical profiles (RD-QVPs), and column vertical profiles (CVPs) have been used to investigate the vertical structure of precipitating systems such as winter storms, mesoscale convective systems, and landfalling hurricanes.