Tornado South 00:25. High 73F. A supercell thunderstorm spawned a tornado in South Dakota Saturday. A spring-like round of thunderstorms spawned tornadoes around Illinois Monday. Video. Questions? The Watertown area saw some damage, with reports of tree and power lines down about 2 miles north of the airport, Fleegel said. A large storm system took aim at the Northeast on Friday, threatening heavy snow and coastal flooding after heavy winds and possible tornadoes damaged homes and buildings, left thousands without power and caused 10 deaths in a wide swath of the South and Midwest. While not nearly as prevalent as southern states, South Dakota still sees its fair share of tornadoes, with an average 32.6 storms per season. Over 35 million people in the Southwest are under tornado threats and severe weather Thursday. Castlewood High School sophomore Erowyn Funge lives across the street from the school. "Then, my ears pop and bang! A tornado watch has been issued for parts of southeastern South Dakota west of Sioux Falls until 10 p.m. Sunday. As severe weather or blizzards threaten, this database scrapes power outage information from more than 1,000 companies nationwide. The watch is in effect for the following counties: Aurora, Davison, Douglas, Hanson, Hutchinson, Jerauld, McCook, Miner, Sanborn and Turner. Three of those injured were driven or drove themselves to the hospital and were listed in good condition,Avera St. Benedict Health Center spokeswoman Lindsey Meyers told the Associated Press. National Weather Service WebContact SVLMedia for all licensing and purchasing at mediadesk@svlmediallc.com or visit SVLmediallc.com WebA history of twisters: Tornadoes in South Dakota 2022 The National Oceanic and Atmospheric Administration has been tracking tornadoes for decades. The National Weather Service in Aberdeen issued a final report concluding that a total of 12 tornadoes have been confirmed.