GOES-16 1-min imagery captured some incredible views of severe storm over the northern High Plains on 6/28/2018, including a large tornado producing storm in southeast Montana crossing into northwest South Dakota (Figure 1).

Figure 2: 28 June 2018 GOES-16 1-min visible satellite imagery. Storm crossing from southeast Montana into Northwest South Dakota produced multiple tornados. Full res
A nearly stationary storm in North Dakota produced severe hail and heavy rainfall, prompting a Flash Flood Warning. Apparent are persistent overshooting tops and above anvil cirrus plumes, indicating strong and long-lived updrafts (Figure 2).

Figure 2: 28 June 2018 GOES-16 1-min visible imagery of severe/heavy rain producing storm in North Dakota. Full res
Bill Line, NWS