Tom Skilling Tornado Seminar (Fermilab)

Admission is free, but seating is first come, first served. About 2800 people attended the seminar last year, so you will be waiting in line with a boatload of storm lovers. (And I'm not talking about the X-Men here)
High-energy physics lab takes on high-energy weather (symmetry breaking)
Annual Fermilab Severe Storm Seminar with WGN's Tom Skilling (National Weather Service - Chicago)