Sarah Walters, Channel 3 meterologist extraordinaire, will be among those presenting at Saturday's Central Plains Severe Weather Symposium at Lincoln East High School (70th & O, Lincoln). Walters' 15-minute presentation is entitled, "We interrupt this broadcast, Responding to the May 22, 2004 Tornado Outbreak" and is scheduled for 9:45 a.m.Also scheduled to present are 3's Charles Thongklin, KETV