While tornadoes occur infrequently in South Dakota, the June 15th tornado near Estelline, SD was even more rare: it was an "anticyclonic" tornado. Check out our website for additional details: https://t.co/K7i2MqWq11 #SDwx pic.twitter.com/7pg8clCvGt

— NWS Aberdeen (@NWSAberdeen) 17 June 2019