DISCUSSION: Earlier in the day yesterday, there was several areas of robust convection which fired up across parts of the Dakotas. During the process of convective initiation, there were a few particularly impressive storms which showed very distinct characteristicswhich were indicative of a very favorable convective environment capable of sustaining strong to severe thunderstorms. Note how in the footage below (as captured yesterday afternoon by Evan Ludes) you can clearly denote the very strong updrafts operating within the core(s) of these intense thunderstorms which were developing at the time. It is within this footage that you can clearly observe the effects of a classic impressively buoyant air parcel ascending due to the presence of a strong convectively unstable thermodynamic environment in place at the time in and around Rapid CIty, South Dakota! Physically, these rapdily ascending air parcels are visually-observed as the rapdily exploding vertical towers associated with the tops of the thunderstorms quickly rising through the atmosphere throughout the course of the video footage attached below. To learn more about other high-impact weather events from across North America, be sure to click here!