fast-moving line of severe thunderstorms, known as a derecho, developed in central Nebraska on bringing hurricane-force winds and creating a rare, large wall of dust that swept over parts of Nebraska, Iowa, South Dakota and Minnesota, creating near-zero visibility on state highways. The storm left at least 3 people dead in its wake – one in Minnesota and 2 in South Dakota – and damaged homes and businesses in dozens of communities. In addition, at least 5 tornadoes were reported – 2 each in South Dakota and Minnesota and 1 in Iowa.1 In South Dakota, at least 28 counties reported damage, forcing Gov. Kristi Noem to declare a state of emergency. In addition, a destructive tornado hit Castlewood, South Dakota. “We have had many storms before, but the amount of communities that have been affected, we just haven’t seen before,” Noem said during a news conference Friday morning.2 “Nature has a way of humbling us, of stepping into our lives with previously unthought power and reminding us what truly matters. That’s how I felt these past two days while surveying storm damage across much of South Dakota. “We will continue to get information out to our people in the coming days. We are getting emergency resources to communities, deploying the National Guard when necessary, and working with local and federal emergency response to help folks out. There is more work to do — together we will get it done.”3 Widespread winds gusts of over 120 km/h (75 mph) were reported across the region with some areas recording gusts of more than 170 km/h (105 mph). More than 110 000 customers were left without power across eastern South Dakota and western Minnesota