Research projects and broadcast meteorology presentations, most of them delivered at regional and national weather conferences:

Recent work

South Dakota tornado outbreak of 24 June 2003

A national single-day, single-state record for tornado occurrences was set on the date, with 67 tornadoes in under six hours in eastern South Dakota.

  • Precursors and initation of the outbreak
    Synoptic setup of the outbreak, including a trajectory analysis of the tornadogenetic air parcels.
  • Evolution of the outbreak
    Meteorological aspects of the outbreak, including cell mergers leading up to the F-4 Manchester tornado, and highly-anomalous tornado movement in the warm sector of the storm.

Spencer, SD tornado

  • Spencer tornado revisited
    Unpublished review of the tornado that killed six people and destroyed the town of Spencer on 30 May 1998.

Powerpoint presentations about these and other meteorological events can be viewed by scrolling through the powerpoint library.