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Personal profile


  • Ph.D. in Meteorology, The University of Oklahoma, 1994
  • M.S. in Meteorology, Texas A&M University, 1989
  • B.S. in Agriculture/Atmospheric Science, University of Missouri-Columbia, 1985

Personal profile

Dr. Trapp is a Professor with the Department of Atmospheric Sciences at the University of Illinois at Urbana-Champaign. Before joining Illinois in 2014, he was a Professor in the Department of Earth and Atmospheric Sciences at Purdue University from 2003-2014, and a research scientist with the National Severe Storms Laboratory (through the Cooperative Institute for Mesoscale Meteorological Studies) in Norman, Oklahoma from 1996-2003. Four years of his tenure with NSSL were spent as a visiting scientist at the National Center for Atmospheric Research in Boulder, Colorado.

Dr. Trapp's research interests include the dynamics and observations of mesoscale convective systems, severe thunderstorms, and tornadoes; mesoscale modeling and predictability.

Trapp received his B.S. degree from the University of Missouri-Columbia, M.S. degree from Texas A&M University, and Ph.D. degree from the University of Oklahoma. He was a National Research Council Postdoctoral Fellow.

Office Address

3062 Natural History Building

Office Phone


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Research Output

Hybrid Prediction of Weekly Tornado Activity Out to Week 3: Utilizing Weather Regimes

Miller, D. E., Wang, Z., Trapp, R. J. & Harnos, D. S., May 16 2020, In : Geophysical Research Letters. 47, 9, e2020GL087253.

Research output: Contribution to journalArticle

  • On the construction principle of conceptual models for severe convective weather forecasting operations in China

    Liu, X., Zhou, K., Lan, Y. U., Mao, X. U. & Trapp, R. J., Feb 2020, In : Weather and Forecasting. 35, 1, p. 299-308 10 p.

    Research output: Contribution to journalArticle

  • A case study of terrain influences on upscale convective growth of a supercell

    Mulholland, J. P., Nesbitt, S. W. & Trapp, R. J., Jan 1 2019, In : Monthly Weather Review. 147, 12, p. 4305-4324 20 p.

    Research output: Contribution to journalArticle

  • A radar-based study of severe hail outbreaks over the contiguous United States for 2000–2011

    Schlie, E. E. J., Wuebbles, D., Stevens, S., Trapp, R. & Jewett, B., Jan 2019, In : International Journal of Climatology. 39, 1, p. 278-291 14 p.

    Research output: Contribution to journalArticle