That depends on which weather guesser site you choose to believe. One says Thursday night through Sunday morning, another says Friday afternoon through Sunday evening. Both say high winds on Saturday.
The HIGH temp here at home today was only 28, but it was my monthly shopping day so I was off running around gathering the necessities. I experienced at least 5 minutes of sunshine on that trip and, closer to Rapid City, about 5 minutes of snow. They (Spearfish, Sturgis, Rapid City) had about half an inch of snow on the ground today from yesterday's flurries and we never got more than a bare trace. THEY claim they will get no more than 6 inches this weekend, yet the guessers are still saying WE will have between 12-18 inches.
Today was grueling and painful and I have leg cramps again. I am so tired I can barely sit up here at this darn computer, but I am sure Lannie worked much harder here at home without my help, so I won't bother to elaborate on my trials. All I can say is OUCH (and numerous expletives you don't really want to hear).