The Office of Emergency Management, the National Weather Service and other agencies schedule the day as way to draw attention the dangers of winter weather.
It seems like everyone is predicting an early and very loooooong winter due to the cooler than normal summer we experienced, but it may not as bad as we're all fearing.
The Nation Weather Service has issued a Winter Storm Warning from 1pm Thursday until 7am Friday for Sioux Falls. The main threats will be heavy snow and blowing snow.