Sioux Falls, SD (KELO-AM) If you are interested in learning more about severe weather and how you can better prepare yourself and family by recognizing some of the signs, feel free to attend one of our Severe Weather Awareness training sessions. These sessions are two hours long, absolutely free to attend and are open to the general public. Please let everyone know of these informative events. You will never look at clouds the same way! The calendar can be viewed at http://www.weather.gov/fsd/spottercalendar. More dates and locations may be added in the coming weeks, so keep an eye on the calendar!