A map illustrating the breadth of the severe winds from this event is shown below. More images from the damage in the Spearfish area can be viewed here . The day after the storm, Brian Klimowski and Tanja Fransen from the NWS in Rapid City visited the area to perform a storm damage survey and assess the nature of the event which caused the damage. A map of the measured direction of the wind damage illustrates that most all the damage was produced by winds from the northwest. Areas of the most severe winds illustrated a divergent signature, that is the damage was blown away from some point.
Tornadic damage illustrates very different characteristics.
If this storm exhibits anything, it is the fact that you don't need a tornado to cause tornadic-like damage which is capable of severe injuries, or even death.