If you missed the 2010 Central Plains Severe Weather Symposium, you can download the keynote presentations, which is what thousands of people are doing on iTunesU.

The podcast from the event, held in March at UNL's School of Natural Resources, has become the 77th most popular podcast on iTunes U and UNL's top podcast. It includes eight videos.

The most popular is "Tornadoes Impacting Interstates," featuring Scott Blair, a forecaster with the National Weather Service in Topeka, Kansas, who has new advice about what to do if you encounter a tornado while driving. Blair details the shortcomings of the old "take shelter in a ditch" approach.

And what does that mean in terms of actual numbers? Mike Kamm, UNL electronic media specialist, says that about 1,500 people have downloaded the podcast from UNL's servers, but we don't know how many more are being downloaded from iTunes' servers.

Ken Dewey, the climatologist who launched the 10-year-old Weather Symposium, this year for the first time arranged for it to be videotaped. The videographer was Gregg Hutchison of SNR computer support.

The videos are available either through iTunes U or at http://snr.unl.edu/cpsws/video/keynotevideo.asp