Fifty degrees in two minutes! From -4° to 45° in just two minutes. On #January22nd in 1943. Then plunging from 54° back to -4° that same morning. That's weather in #SouthDakota for ya, which helps explain the #ChildrensBlizzard in 1888. http://rapidcityjournal.com/news/local/degrees-in-minutes-spearfish-library-celebrates-record-breaking-weather-day/article_05e7b793-8ad4-5517-9a10-5a27546a328a.html #Spearfish