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Thanks for stopping by. Here you will find images and video that involve my research on severe storms, specifically thunderstorms that produce tornadoes and/or downbursts. Some of the presentations are in video form and contain visualizations of storms. You may access these from the Presentation menu above. Hover over the Presentation menu to access all talks. All HD video is viewed best in full screen mode with 1080p HD quality chosen (select gear icon at the bottom right of the YouTube video window). However, due to the nature of streaming video (finite bandwidth) artifacts occur even at 1080p – especially when there are many particles being animated.

Latest stuff:

March 25, 2017: Presentation at the 2017 Dark Skies Seminar at Madison College

UW-Madison press release regarding this work.

February 16, 2017: University of Western Ontario, Mechanical and Materials Engineering Distinguished Lecture Series seminar

November 16, 2016: Robert Wilhelmson and I both received HPC Innovation Excellence Awards.

November 9, 2016 Severe Local Storms presentation:

August 2016: “Inside a Supertwister” – part of the NSF sponsored CADENS project. Click here for NCSA’s page dedicated to this documentary on devastating tornadoes.

June 19, 2016: NVIDIa blogs about their new IndeX software, using some of my supercell model data.

June 13, 2016: Presentation at fourth annual Blue Waters Symposium in Sunriver, Oregon

The first major publication on this work can be found in the January 2017 issue of BAMS:

Orf, L., R. Wilhelmson, B. Lee, C. Finley, and A. Houston, 2017: Evolution of a Long-Track Violent Tornado within a Simulated Supercell. Bull. Am. Meteorol. Soc., 98, 45–68. http://dx.doi.org/10.1175/BAMS-D-15-00073.1.